./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0 --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 dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:56:19,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:56:19,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:56:19,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:56:19,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:56:19,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:56:19,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:56:19,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:56:19,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:56:19,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:56:19,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:56:19,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:56:19,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:56:19,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:56:19,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:56:19,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:56:19,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:56:19,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:56:19,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:56:19,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:56:19,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:56:19,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:56:19,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:56:19,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:56:19,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:56:19,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:56:19,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:56:19,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:56:19,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:56:19,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:56:19,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:56:19,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:56:19,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:56:19,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:56:19,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:56:19,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:56:19,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:56:19,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:56:19,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:56:19,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:56:19,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:56:19,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:56:19,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:56:19,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:56:19,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:56:19,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:56:19,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:56:19,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:56:19,460 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:56:19,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:56:19,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:56:19,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:56:19,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:56:19,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:56:19,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:56:19,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:56:19,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:56:19,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:56:19,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:56:19,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:56:19,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:56:19,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:56:19,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:56:19,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:56:19,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:56:19,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:56:19,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:56:19,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:56:19,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:56:19,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:56:19,468 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:56:19,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:56:19,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:56:19,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:56:19,469 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_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 [2021-11-22 14:56:19,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:56:19,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:56:19,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:56:19,789 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:56:19,789 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:56:19,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2021-11-22 14:56:19,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/5d169c6d7/cac9f877badd4599a2b1448d26c62940/FLAG0351431a1 [2021-11-22 14:56:20,448 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:56:20,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2021-11-22 14:56:20,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/5d169c6d7/cac9f877badd4599a2b1448d26c62940/FLAG0351431a1 [2021-11-22 14:56:20,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/5d169c6d7/cac9f877badd4599a2b1448d26c62940 [2021-11-22 14:56:20,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:56:20,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:56:20,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:56:20,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:56:20,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:56:20,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:56:20" (1/1) ... [2021-11-22 14:56:20,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5026fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:20, skipping insertion in model container [2021-11-22 14:56:20,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:56:20" (1/1) ... [2021-11-22 14:56:20,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:56:20,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:56:21,057 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_456f48ba-67c2-481c-a60c-66842baad629/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i[948,961] [2021-11-22 14:56:21,075 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1792) 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.visit(CHandler.java:730) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1385) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) 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) [2021-11-22 14:56:21,082 INFO L158 Benchmark]: Toolchain (without parser) took 256.56ms. Allocated memory is still 94.4MB. Free memory was 66.4MB in the beginning and 57.9MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:56:21,083 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:56:21,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.33ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 57.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:56:21,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.33ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 57.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:846) 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_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0 --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 dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:56:23,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:56:23,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:56:23,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:56:23,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:56:23,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:56:23,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:56:23,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:56:23,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:56:23,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:56:23,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:56:23,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:56:23,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:56:23,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:56:23,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:56:23,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:56:23,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:56:23,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:56:23,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:56:23,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:56:23,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:56:23,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:56:23,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:56:23,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:56:23,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:56:23,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:56:23,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:56:23,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:56:23,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:56:23,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:56:23,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:56:23,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:56:23,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:56:23,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:56:23,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:56:23,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:56:23,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:56:23,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:56:23,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:56:23,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:56:23,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:56:23,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 14:56:24,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:56:24,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:56:24,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:56:24,010 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:56:24,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:56:24,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:56:24,013 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:56:24,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:56:24,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:56:24,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:56:24,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:56:24,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:56:24,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:56:24,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:56:24,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 14:56:24,018 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 14:56:24,019 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 14:56:24,019 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:56:24,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:56:24,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:56:24,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:56:24,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:56:24,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:56:24,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:56:24,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:56:24,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:56:24,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:56:24,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:56:24,024 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 14:56:24,024 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 14:56:24,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:56:24,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:56:24,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:56:24,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:56:24,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 14:56:24,027 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_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dba22d6df3d4e3652cbc5549e3bb451cd645bea6f6419ad67cf157d39a1c2871 [2021-11-22 14:56:24,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:56:24,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:56:24,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:56:24,592 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:56:24,593 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:56:24,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2021-11-22 14:56:24,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/ebf420505/f170cb50ce714fc892cdb836bd7d57c9/FLAG7a19c9dd8 [2021-11-22 14:56:25,260 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:56:25,261 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i [2021-11-22 14:56:25,268 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/ebf420505/f170cb50ce714fc892cdb836bd7d57c9/FLAG7a19c9dd8 [2021-11-22 14:56:25,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/data/ebf420505/f170cb50ce714fc892cdb836bd7d57c9 [2021-11-22 14:56:25,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:56:25,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:56:25,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:56:25,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:56:25,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:56:25,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:56:25" (1/1) ... [2021-11-22 14:56:25,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f26f73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:25, skipping insertion in model container [2021-11-22 14:56:25,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:56:25" (1/1) ... [2021-11-22 14:56:25,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:56:25,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:56:25,955 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_456f48ba-67c2-481c-a60c-66842baad629/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i[948,961] [2021-11-22 14:56:25,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:56:26,012 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:56:26,067 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_456f48ba-67c2-481c-a60c-66842baad629/sv-benchmarks/c/nla-digbench-scaling/knuth_valuebound5.i[948,961] [2021-11-22 14:56:26,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:56:26,120 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:56:26,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26 WrapperNode [2021-11-22 14:56:26,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:56:26,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:56:26,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:56:26,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:56:26,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,175 INFO L137 Inliner]: procedures = 18, calls = 14, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 98 [2021-11-22 14:56:26,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:56:26,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:56:26,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:56:26,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:56:26,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:56:26,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:56:26,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:56:26,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:56:26,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (1/1) ... [2021-11-22 14:56:26,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:56:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:56:26,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:56:26,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:56:26,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:56:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 14:56:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:56:26,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:56:26,456 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:56:26,460 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:56:29,735 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:56:29,741 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:56:29,742 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:56:29,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:56:29 BoogieIcfgContainer [2021-11-22 14:56:29,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:56:29,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:56:29,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:56:29,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:56:29,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:56:25" (1/3) ... [2021-11-22 14:56:29,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad05512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:56:29, skipping insertion in model container [2021-11-22 14:56:29,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:56:26" (2/3) ... [2021-11-22 14:56:29,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad05512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:56:29, skipping insertion in model container [2021-11-22 14:56:29,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:56:29" (3/3) ... [2021-11-22 14:56:29,752 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_valuebound5.i [2021-11-22 14:56:29,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:56:29,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-22 14:56:29,803 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:56:29,810 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 [2021-11-22 14:56:29,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 14:56:29,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 30 states have (on average 1.6) internal successors, (48), 34 states have internal predecessors, (48), 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) [2021-11-22 14:56:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:56:29,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:29,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:29,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:56:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-11-22 14:56:29,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:56:29,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041034448] [2021-11-22 14:56:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:29,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:56:29,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:56:29,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:56:29,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 14:56:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:30,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 14:56:30,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:30,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:56:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:30,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:56:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041034448] [2021-11-22 14:56:30,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041034448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:56:30,487 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:56:30,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 14:56:30,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175931796] [2021-11-22 14:56:30,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:56:30,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:56:30,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:56:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:56:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:56:30,519 INFO L87 Difference]: Start difference. First operand has 35 states, 30 states have (on average 1.6) internal successors, (48), 34 states have internal predecessors, (48), 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-11-22 14:56:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:56:30,533 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2021-11-22 14:56:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:56:30,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2021-11-22 14:56:30,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:56:30,543 INFO L225 Difference]: With dead ends: 67 [2021-11-22 14:56:30,543 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 14:56:30,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:56:30,549 INFO L933 BasicCegarLoop]: 38 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, 38 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 [2021-11-22 14:56:30,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:56:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 14:56:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-22 14:56:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 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) [2021-11-22 14:56:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-11-22 14:56:30,583 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2021-11-22 14:56:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:56:30,583 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-11-22 14:56:30,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-11-22 14:56:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-11-22 14:56:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:56:30,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:56:30,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:56:30,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:56:30,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:56:30,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:56:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:56:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-11-22 14:56:30,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:56:30,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401019770] [2021-11-22 14:56:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:56:30,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:56:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:56:30,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:56:30,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 14:56:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:56:31,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 14:56:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:56:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:56:37,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:56:45,157 WARN L860 $PredicateComparison]: unable to prove that (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) is different from true [2021-11-22 14:56:53,718 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) is different from true [2021-11-22 14:57:02,624 WARN L860 $PredicateComparison]: unable to prove that (or (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) is different from true [2021-11-22 14:57:28,046 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (not (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32))) (= (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1| (_ bv4294967294 32)))) (let ((.cse1 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|))) (.cse3 (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (.cse0 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse2))) (bvadd (bvneg (bvmul (bvadd (bvmul .cse0 (_ bv8 32)) (bvmul .cse1 (_ bv8 32))) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse2) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv8 32) .cse3) (bvmul (_ bv4 32) (bvmul .cse1 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|)) (bvneg (bvmul (bvmul .cse3 (_ bv4 32)) |c_ULTIMATE.start_main_~a~0#1|)) (bvmul (_ bv4 32) (bvmul .cse0 |c_ULTIMATE.start_main_~a~0#1| |c_ULTIMATE.start_main_~a~0#1|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|))) is different from true [2021-11-22 14:57:42,745 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_9| (_ bv4294967294 32)))) (let ((.cse3 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~a~0#1_9|))) (.cse1 (bvurem |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~a~0#1_9|)) (.cse2 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse0))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse0) |v_ULTIMATE.start_main_~a~0#1_9|)) (bvneg (bvmul (bvmul .cse1 (_ bv4 32)) |v_ULTIMATE.start_main_~a~0#1_9|)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse3 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_9|)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_9| |v_ULTIMATE.start_main_~a~0#1_9| .cse3)) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_9| |v_ULTIMATE.start_main_~a~0#1_9|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (not (bvugt |v_ULTIMATE.start_main_~a~0#1_9| (_ bv2 32))) (not (bvule |v_ULTIMATE.start_main_~a~0#1_9| (_ bv5 32))))) is different from true [2021-11-22 14:57:55,166 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ BitVec 32))) (or (= (let ((.cse0 (bvadd |v_ULTIMATE.start_main_~a~0#1_9| (_ bv4294967294 32)))) (let ((.cse3 (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~a~0#1_9|))) (.cse1 (bvurem |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~a~0#1_9|)) (.cse2 (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse0))) (bvadd (bvmul (_ bv4 32) (bvmul (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse0) |v_ULTIMATE.start_main_~a~0#1_9|)) (bvneg (bvmul (bvmul .cse1 (_ bv4 32)) |v_ULTIMATE.start_main_~a~0#1_9|)) (bvneg (bvmul (bvadd (bvmul .cse2 (_ bv8 32)) (bvmul .cse3 (_ bv8 32))) |v_ULTIMATE.start_main_~a~0#1_9|)) (bvmul (_ bv4 32) (bvmul |v_ULTIMATE.start_main_~a~0#1_9| |v_ULTIMATE.start_main_~a~0#1_9| .cse3)) (bvmul (_ bv8 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse2 |v_ULTIMATE.start_main_~a~0#1_9| |v_ULTIMATE.start_main_~a~0#1_9|))))) (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~n~0#1|)) (not (bvugt |v_ULTIMATE.start_main_~a~0#1_9| (_ bv2 32))) (not (bvule |v_ULTIMATE.start_main_~a~0#1_9| (_ bv5 32)))))) is different from true [2021-11-22 14:57:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:55,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:57:55,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401019770] [2021-11-22 14:57:55,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401019770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:55,520 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:55,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-22 14:57:55,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629130197] [2021-11-22 14:57:55,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:55,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 14:57:55,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:57:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 14:57:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=108, Unknown=6, NotChecked=150, Total=306 [2021-11-22 14:57:55,526 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-11-22 14:58:15,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:58:38,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:58:41,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:58:44,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:58:46,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:58:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:48,466 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-11-22 14:58:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 14:58:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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 [2021-11-22 14:58:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:48,489 INFO L225 Difference]: With dead ends: 71 [2021-11-22 14:58:48,489 INFO L226 Difference]: Without dead ends: 69 [2021-11-22 14:58:48,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=109, Invalid=329, Unknown=6, NotChecked=258, Total=702 [2021-11-22 14:58:48,493 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 120 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 56 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:48,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 95 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 143 Invalid, 5 Unknown, 316 Unchecked, 24.1s Time] [2021-11-22 14:58:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-22 14:58:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2021-11-22 14:58:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 45 states have internal predecessors, (55), 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) [2021-11-22 14:58:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2021-11-22 14:58:48,508 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 13 [2021-11-22 14:58:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:48,509 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2021-11-22 14:58:48,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-11-22 14:58:48,510 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2021-11-22 14:58:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 14:58:48,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:48,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:48,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:48,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:58:48,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:58:48,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-11-22 14:58:48,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:58:48,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824518488] [2021-11-22 14:58:48,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:48,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:58:48,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:58:48,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:58:48,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 14:58:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:49,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 14:58:49,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:49,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:49,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:58:49,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824518488] [2021-11-22 14:58:49,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824518488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:49,863 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:49,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-22 14:58:49,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330143349] [2021-11-22 14:58:49,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:49,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:58:49,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:58:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:58:49,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:58:49,866 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-11-22 14:58:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:51,846 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-11-22 14:58:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:58:51,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 [2021-11-22 14:58:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:51,850 INFO L225 Difference]: With dead ends: 52 [2021-11-22 14:58:51,850 INFO L226 Difference]: Without dead ends: 50 [2021-11-22 14:58:51,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:58:51,853 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 28 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:51,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 92 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 14:58:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-22 14:58:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2021-11-22 14:58:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 45 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) [2021-11-22 14:58:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-11-22 14:58:51,891 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 15 [2021-11-22 14:58:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:51,892 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-11-22 14:58:51,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-11-22 14:58:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-11-22 14:58:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 14:58:51,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:51,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:51,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:52,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:58:52,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 14:58:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-11-22 14:58:52,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:58:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973708556] [2021-11-22 14:58:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:52,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:58:52,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:58:52,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:58:52,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 14:58:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:53,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 14:58:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:59:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:13,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:59:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:59:40,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:59:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973708556] [2021-11-22 14:59:40,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973708556] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:59:40,168 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:59:40,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 6] imperfect sequences [] total 15 [2021-11-22 14:59:40,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682897135] [2021-11-22 14:59:40,169 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:59:40,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 14:59:40,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:59:40,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 14:59:40,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:59:40,172 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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) [2021-11-22 14:59:51,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:24,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:28,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:36,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:38,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:40,696 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-11-22 15:00:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 15:00:40,730 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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 17 [2021-11-22 15:00:40,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:40,731 INFO L225 Difference]: With dead ends: 57 [2021-11-22 15:00:40,731 INFO L226 Difference]: Without dead ends: 53 [2021-11-22 15:00:40,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2021-11-22 15:00:40,733 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 147 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 100 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:40,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 70 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 174 Invalid, 5 Unknown, 0 Unchecked, 35.9s Time] [2021-11-22 15:00:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-22 15:00:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-11-22 15:00:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 49 states have internal predecessors, (57), 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) [2021-11-22 15:00:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-11-22 15:00:40,747 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 17 [2021-11-22 15:00:40,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:40,748 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-11-22 15:00:40,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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) [2021-11-22 15:00:40,748 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-11-22 15:00:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:00:40,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:40,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:40,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:40,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:40,953 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:00:40,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -738426879, now seen corresponding path program 1 times [2021-11-22 15:00:40,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878576092] [2021-11-22 15:00:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:40,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:40,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:40,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:41,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 15:00:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:41,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:00:41,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:00:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:41,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:00:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:00:42,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:00:42,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878576092] [2021-11-22 15:00:42,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878576092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:00:42,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:00:42,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:00:42,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704897659] [2021-11-22 15:00:42,959 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:00:42,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:00:42,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:00:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:00:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:00:42,961 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-22 15:00:46,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:54,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:56,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:00:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:00:56,682 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2021-11-22 15:00:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:00:56,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 [2021-11-22 15:00:56,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:00:56,684 INFO L225 Difference]: With dead ends: 50 [2021-11-22 15:00:56,684 INFO L226 Difference]: Without dead ends: 48 [2021-11-22 15:00:56,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:00:56,687 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:00:56,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 77 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2021-11-22 15:00:56,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-22 15:00:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-22 15:00:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2) internal successors, (54), 47 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) [2021-11-22 15:00:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2021-11-22 15:00:56,701 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 26 [2021-11-22 15:00:56,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:00:56,701 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2021-11-22 15:00:56,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-22 15:00:56,702 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2021-11-22 15:00:56,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 15:00:56,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:00:56,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:00:56,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:00:56,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:00:56,910 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:00:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:00:56,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1966615321, now seen corresponding path program 1 times [2021-11-22 15:00:56,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:00:56,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460671987] [2021-11-22 15:00:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:00:56,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:00:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:00:56,913 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:00:56,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 15:00:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:00:57,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 15:00:57,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:01:06,708 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:12,371 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:17,996 WARN L227 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:23,065 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:28,805 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:31,335 WARN L838 $PredicateComparison]: unable to prove that (and (bvule |c_ULTIMATE.start_main_~a~0#1| (_ bv5 32)) (= |c_ULTIMATE.start_main_~d~0#1| |c_ULTIMATE.start_main_~a~0#1|) (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)) (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32))) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (and (= (bvurem |ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)))) |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| (bvurem |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)) (= |c_ULTIMATE.start_main_~s~0#1| ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|)))) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))))) is different from false [2021-11-22 15:01:37,273 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:43,087 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:48,801 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:59,259 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:05,175 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:10,995 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:16,769 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:21,902 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:27,797 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:33,770 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:39,709 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:45,537 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:50,551 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:56,300 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:02,487 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:08,386 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:14,433 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:19,616 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:25,468 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:31,510 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:37,376 WARN L227 SmtUtils]: Spent 5.87s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:43,215 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:48,431 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:54,324 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:00,326 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:06,267 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:12,189 WARN L227 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:17,495 WARN L227 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:23,370 WARN L227 SmtUtils]: Spent 5.87s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:29,512 WARN L227 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:35,429 WARN L227 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:41,289 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:46,487 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:52,397 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:58,303 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:04,050 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:09,931 WARN L227 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:15,020 WARN L227 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:20,805 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:26,823 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:32,682 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:38,587 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:43,772 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:49,691 WARN L227 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:55,726 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:06:00,727 WARN L227 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:06:06,238 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:06:11,744 WARN L227 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:06:17,260 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:06:19,717 WARN L838 $PredicateComparison]: unable to prove that (and (bvule |c_ULTIMATE.start_main_~a~0#1| (_ bv5 32)) (not (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32))) (= |c_ULTIMATE.start_main_~d~0#1| |c_ULTIMATE.start_main_~a~0#1|) (bvugt |c_ULTIMATE.start_main_~a~0#1| (_ bv2 32)) (exists ((|ULTIMATE.start_main_~n~0#1| (_ BitVec 32))) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (and (= (bvurem |ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (bvuge ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~n~0#1|))) |c_ULTIMATE.start_main_~d~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)))) |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| (bvurem |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)) (bvule |ULTIMATE.start_main_~n~0#1| (_ bv5 32)))))) is different from false [2021-11-22 15:06:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:22,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:06:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:06:27,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:06:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460671987] [2021-11-22 15:06:27,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460671987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:06:27,579 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:06:27,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 4] imperfect sequences [] total 13 [2021-11-22 15:06:27,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819130687] [2021-11-22 15:06:27,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:06:27,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:06:27,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:06:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:06:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=81, Unknown=2, NotChecked=38, Total=156 [2021-11-22 15:06:27,581 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 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) [2021-11-22 15:06:34,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:06:38,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:06:43,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:06:45,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:06:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:06:46,954 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-11-22 15:06:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:06:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 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 30 [2021-11-22 15:06:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:06:46,971 INFO L225 Difference]: With dead ends: 71 [2021-11-22 15:06:46,971 INFO L226 Difference]: Without dead ends: 46 [2021-11-22 15:06:46,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=63, Invalid=153, Unknown=2, NotChecked=54, Total=272 [2021-11-22 15:06:46,973 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:06:46,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 63 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 101 Invalid, 1 Unknown, 67 Unchecked, 15.6s Time] [2021-11-22 15:06:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-22 15:06:46,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-22 15:06:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 45 states have internal predecessors, (51), 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) [2021-11-22 15:06:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-11-22 15:06:46,987 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 30 [2021-11-22 15:06:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:06:46,988 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-11-22 15:06:46,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 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) [2021-11-22 15:06:46,989 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-11-22 15:06:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:06:46,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:06:46,991 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:06:47,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:06:47,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:06:47,205 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:06:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:06:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 121546406, now seen corresponding path program 1 times [2021-11-22 15:06:47,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:06:47,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404311364] [2021-11-22 15:06:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:06:47,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:06:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:06:47,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:06:47,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_456f48ba-67c2-481c-a60c-66842baad629/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 15:06:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:06:47,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 15:06:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:06:58,184 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:03,912 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:09,721 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:14,797 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:20,462 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:26,199 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:31,900 WARN L227 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:34,451 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (and (= (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)))) |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)) (= |c_ULTIMATE.start_main_~s~0#1| ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~n~0#1|)))) (bvule |c_ULTIMATE.start_main_~d~0#1| (_ bv5 32)) (bvule |c_ULTIMATE.start_main_~n~0#1| (_ bv5 32)) (bvugt |c_ULTIMATE.start_main_~d~0#1| (_ bv2 32)))) is different from false [2021-11-22 15:07:36,984 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~d~0#1| (_ bv4294967294 32)))) (and (= (bvurem |c_ULTIMATE.start_main_~n~0#1| .cse0) |c_ULTIMATE.start_main_~k~0#1|) (= (bvadd (bvmul (_ bv4 32) (bvudiv |c_ULTIMATE.start_main_~n~0#1| .cse0)) (bvmul (_ bv4 32) (bvneg (bvudiv |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)))) |c_ULTIMATE.start_main_~q~0#1|) (= |c_ULTIMATE.start_main_~r~0#1| (bvurem |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~d~0#1|)) (= |c_ULTIMATE.start_main_~s~0#1| ((_ fp.to_ubv 32) roundTowardZero (fp.sqrt roundNearestTiesToEven ((_ to_fp_unsigned 11 53) roundNearestTiesToEven |c_ULTIMATE.start_main_~n~0#1|)))) (bvule |c_ULTIMATE.start_main_~d~0#1| (_ bv5 32)) (bvule |c_ULTIMATE.start_main_~n~0#1| (_ bv5 32)) (bvugt |c_ULTIMATE.start_main_~d~0#1| (_ bv2 32)))) is different from true [2021-11-22 15:07:42,885 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:48,703 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:54,442 WARN L227 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:07:59,553 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:05,359 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:11,152 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:16,958 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:22,722 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:28,431 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:34,105 WARN L227 SmtUtils]: Spent 5.67s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:39,205 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:44,964 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:50,763 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:08:56,659 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:02,511 WARN L227 SmtUtils]: Spent 5.84s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:08,300 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:14,089 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:19,322 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:25,283 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:31,106 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:36,968 WARN L227 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:42,798 WARN L227 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:48,612 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:54,464 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:09:59,689 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:05,504 WARN L227 SmtUtils]: Spent 5.81s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:11,290 WARN L227 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:17,187 WARN L227 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:23,080 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:28,911 WARN L227 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:34,973 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:40,265 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 8 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:46,115 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:10:52,101 WARN L227 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)