./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:46,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:46,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:46,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:46,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:46,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:46,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:46,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:46,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:46,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:46,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:46,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:46,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:46,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:46,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:46,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:46,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:46,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:46,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:46,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:46,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:46,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:46,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:46,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:46,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:46,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:46,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:46,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:46,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:46,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:46,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:46,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:46,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:46,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:46,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:46,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:46,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:46,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:46,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:46,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:46,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:46,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:40:46,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:46,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:46,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:46,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:46,764 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:46,765 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:46,765 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:46,765 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:40:46,771 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:46,772 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:46,773 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:40:46,773 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:40:46,774 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:46,774 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:40:46,774 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:40:46,774 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:40:46,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:46,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:40:46,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:40:46,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:40:46,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:46,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:46,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:46,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:46,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:46,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:40:46,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:46,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:46,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:46,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:46,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:46,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:46,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:46,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:46,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:46,782 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:40:46,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:40:46,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:46,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:46,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:46,783 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b [2021-11-19 13:40:47,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:47,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:47,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:47,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:47,087 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:47,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-19 13:40:47,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/a2f0cdec9/986fe5fa9d684846b39660b8474a8da0/FLAG76bb1290e [2021-11-19 13:40:47,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:47,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-19 13:40:47,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/a2f0cdec9/986fe5fa9d684846b39660b8474a8da0/FLAG76bb1290e [2021-11-19 13:40:47,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/a2f0cdec9/986fe5fa9d684846b39660b8474a8da0 [2021-11-19 13:40:47,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:47,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:47,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:47,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:47,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:47,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:47" (1/1) ... [2021-11-19 13:40:47,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46d68e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:47, skipping insertion in model container [2021-11-19 13:40:47,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:47" (1/1) ... [2021-11-19 13:40:47,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:48,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:48,322 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1753) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$49(StandardFunctionHandler.java:384) 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:1438) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2029) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1637) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1076) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1614) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1076) 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:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1460) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2350) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:602) 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) [2021-11-19 13:40:48,328 INFO L158 Benchmark]: Toolchain (without parser) took 355.75ms. Allocated memory is still 102.8MB. Free memory was 60.8MB in the beginning and 75.3MB in the end (delta: -14.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 13:40:48,332 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:40:48,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.72ms. Allocated memory is still 102.8MB. Free memory was 60.6MB in the beginning and 75.3MB in the end (delta: -14.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 13:40:48,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.72ms. Allocated memory is still 102.8MB. Free memory was 60.6MB in the beginning and 75.3MB in the end (delta: -14.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:50,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:50,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:50,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:50,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:50,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:50,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:50,731 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:50,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:50,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:50,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:50,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:50,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:50,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:50,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:50,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:50,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:50,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:50,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:50,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:50,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:50,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:50,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:50,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:50,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:50,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:50,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:50,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:50,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:50,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:50,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:50,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:50,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:50,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:50,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:50,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:50,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:50,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:50,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:50,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:50,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:50,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:40:50,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:50,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:50,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:50,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:50,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:50,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:50,854 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:50,854 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:50,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:50,854 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:50,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:50,857 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:40:50,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:40:50,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:50,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:50,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:50,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:50,858 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:50,858 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:40:50,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:40:50,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:40:50,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:50,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:50,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:50,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:50,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:40:50,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:50,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:50,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:50,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:50,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:50,861 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:40:50,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:50,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:50,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:50,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:50,863 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_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e71bfd4408bcb5f70ec62fe586e726a0ffe38b8b59566c7d94bdf19f85ff93b [2021-11-19 13:40:51,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:51,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:51,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:51,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:51,292 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:51,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-19 13:40:51,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/bcc3bcab3/ed2d37d424e64ab58c312e87a69c6ff7/FLAG3db71db7f [2021-11-19 13:40:51,919 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:51,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/sv-benchmarks/c/float-newlib/float_req_bl_0880.c [2021-11-19 13:40:51,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/bcc3bcab3/ed2d37d424e64ab58c312e87a69c6ff7/FLAG3db71db7f [2021-11-19 13:40:52,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/data/bcc3bcab3/ed2d37d424e64ab58c312e87a69c6ff7 [2021-11-19 13:40:52,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:52,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:52,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:52,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:52,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:52,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b98658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52, skipping insertion in model container [2021-11-19 13:40:52,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:52,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:52,606 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_d600b2f8-dd49-4a9e-912a-553f5fde7656/sv-benchmarks/c/float-newlib/float_req_bl_0880.c[15389,15402] [2021-11-19 13:40:52,609 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:52,622 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:40:52,733 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_d600b2f8-dd49-4a9e-912a-553f5fde7656/sv-benchmarks/c/float-newlib/float_req_bl_0880.c[15389,15402] [2021-11-19 13:40:52,739 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:52,774 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:40:52,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52 WrapperNode [2021-11-19 13:40:52,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:52,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:52,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:40:52,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:40:52,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,894 INFO L137 Inliner]: procedures = 28, calls = 203, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 962 [2021-11-19 13:40:52,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:40:52,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:40:52,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:40:52,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:40:52,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:52,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:53,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:53,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:53,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:40:53,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:40:53,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:40:53,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:40:53,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (1/1) ... [2021-11-19 13:40:53,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:40:53,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:40:53,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:40:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:40:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:40:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:40:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-19 13:40:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:40:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-19 13:40:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-11-19 13:40:53,106 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-11-19 13:40:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-19 13:40:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:40:53,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:40:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:40:53,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:40:53,307 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:40:53,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:41:22,599 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:41:22,609 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:41:22,610 INFO L301 CfgBuilder]: Removed 88 assume(true) statements. [2021-11-19 13:41:22,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:41:22 BoogieIcfgContainer [2021-11-19 13:41:22,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:41:22,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:41:22,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:41:22,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:41:22,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:40:52" (1/3) ... [2021-11-19 13:41:22,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cd1b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:41:22, skipping insertion in model container [2021-11-19 13:41:22,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52" (2/3) ... [2021-11-19 13:41:22,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cd1b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:41:22, skipping insertion in model container [2021-11-19 13:41:22,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:41:22" (3/3) ... [2021-11-19 13:41:22,621 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0880.c [2021-11-19 13:41:22,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:41:22,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:41:22,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:41:22,683 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=FINITE_AUTOMATA, 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 [2021-11-19 13:41:22,683 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:41:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:41:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 13:41:22,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:22,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:22,712 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:22,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1189443227, now seen corresponding path program 1 times [2021-11-19 13:41:22,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:22,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734008495] [2021-11-19 13:41:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:22,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:22,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:41:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:23,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:41:23,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:23,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:23,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:23,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734008495] [2021-11-19 13:41:23,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734008495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:23,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:23,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:41:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140617618] [2021-11-19 13:41:23,978 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:23,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:41:23,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:41:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:41:24,012 INFO L87 Difference]: Start difference. First operand has 249 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-11-19 13:41:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:24,068 INFO L93 Difference]: Finished difference Result 495 states and 855 transitions. [2021-11-19 13:41:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:41:24,071 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-11-19 13:41:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:24,081 INFO L225 Difference]: With dead ends: 495 [2021-11-19 13:41:24,082 INFO L226 Difference]: Without dead ends: 245 [2021-11-19 13:41:24,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:41:24,090 INFO L933 BasicCegarLoop]: 339 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, 339 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 [2021-11-19 13:41:24,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:41:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-19 13:41:24,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-19 13:41:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.3666666666666667) internal successors, (328), 240 states have internal predecessors, (328), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:41:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 334 transitions. [2021-11-19 13:41:24,156 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 334 transitions. Word has length 16 [2021-11-19 13:41:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:24,159 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 334 transitions. [2021-11-19 13:41:24,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-11-19 13:41:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 334 transitions. [2021-11-19 13:41:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 13:41:24,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:24,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:24,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:24,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:24,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash -305503749, now seen corresponding path program 1 times [2021-11-19 13:41:24,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:24,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77420187] [2021-11-19 13:41:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:24,364 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:24,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:24,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:24,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:41:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:25,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:41:25,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:25,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:25,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:25,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77420187] [2021-11-19 13:41:25,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77420187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:25,855 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:25,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:41:25,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19798884] [2021-11-19 13:41:25,856 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:25,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:41:25,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:41:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:41:25,858 INFO L87 Difference]: Start difference. First operand 245 states and 334 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:26,105 INFO L93 Difference]: Finished difference Result 471 states and 639 transitions. [2021-11-19 13:41:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:41:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-19 13:41:26,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:26,110 INFO L225 Difference]: With dead ends: 471 [2021-11-19 13:41:26,110 INFO L226 Difference]: Without dead ends: 245 [2021-11-19 13:41:26,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:41:26,113 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 2 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:26,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 988 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:26,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-19 13:41:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-19 13:41:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.3583333333333334) internal successors, (326), 240 states have internal predecessors, (326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:41:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 332 transitions. [2021-11-19 13:41:26,135 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 332 transitions. Word has length 19 [2021-11-19 13:41:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:26,136 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 332 transitions. [2021-11-19 13:41:26,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 332 transitions. [2021-11-19 13:41:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 13:41:26,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:26,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:26,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:26,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:26,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:26,361 INFO L85 PathProgramCache]: Analyzing trace with hash 366705631, now seen corresponding path program 1 times [2021-11-19 13:41:26,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:26,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282006534] [2021-11-19 13:41:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:26,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:26,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:26,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:26,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:41:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:27,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:41:27,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:41:41,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:47,999 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_fmod_float_~x#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from true [2021-11-19 13:42:14,008 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) is different from true [2021-11-19 13:42:32,683 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (bvult |c_ULTIMATE.start_floor_float_~ix~6#1| (_ bv2139095040 32))) is different from true [2021-11-19 13:42:43,089 WARN L860 $PredicateComparison]: unable to prove that (or (bvult (bvand (_ bv2147483647 32) |c_ULTIMATE.start_floor_float_~i0~0#1|) (_ bv2139095040 32)) (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) is different from true [2021-11-19 13:42:53,541 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_floor_float_~i0~0#1_17| (_ BitVec 32))) (or (not (= |c_ULTIMATE.start_floor_float_~x#1| (fp ((_ extract 31 31) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) ((_ extract 30 23) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) ((_ extract 22 0) |v_ULTIMATE.start_floor_float_~i0~0#1_17|)))) (bvult (bvand (_ bv2147483647 32) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) (_ bv2139095040 32)))) (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) is different from true [2021-11-19 13:42:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:58,059 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:58,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282006534] [2021-11-19 13:42:58,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282006534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:58,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:58,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2021-11-19 13:42:58,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347066001] [2021-11-19 13:42:58,060 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:58,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 13:42:58,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:58,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 13:42:58,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=108, Unknown=5, NotChecked=120, Total=272 [2021-11-19 13:42:58,062 INFO L87 Difference]: Start difference. First operand 245 states and 332 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) [2021-11-19 13:43:00,346 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.gt |c_ULTIMATE.start_main_~y~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_floor_float_~i0~0#1_17| (_ BitVec 32))) (or (not (= |c_ULTIMATE.start_floor_float_~x#1| (fp ((_ extract 31 31) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) ((_ extract 30 23) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) ((_ extract 22 0) |v_ULTIMATE.start_floor_float_~i0~0#1_17|)))) (bvult (bvand (_ bv2147483647 32) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) (_ bv2139095040 32)))) (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (or (and (not |c_ULTIMATE.start_main_#t~short69#1|) (not .cse1)) (and |c_ULTIMATE.start_main_#t~short69#1| .cse1)) (= |c_ULTIMATE.start_floor_float_~x#1| |c_ULTIMATE.start_main_~y~0#1|) .cse1 (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-19 13:43:02,410 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.gt |c_ULTIMATE.start_main_~y~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_floor_float_~i0~0#1_17| (_ BitVec 32))) (or (not (= |c_ULTIMATE.start_floor_float_~x#1| (fp ((_ extract 31 31) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) ((_ extract 30 23) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) ((_ extract 22 0) |v_ULTIMATE.start_floor_float_~i0~0#1_17|)))) (bvult (bvand (_ bv2147483647 32) |v_ULTIMATE.start_floor_float_~i0~0#1_17|) (_ bv2139095040 32)))) (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (or (and (not |c_ULTIMATE.start_main_#t~short69#1|) (not .cse1)) (and |c_ULTIMATE.start_main_#t~short69#1| .cse1)) (= |c_ULTIMATE.start_floor_float_~x#1| |c_ULTIMATE.start_main_~y~0#1|) .cse1 (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-19 13:43:04,486 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp ((_ extract 31 31) |c_ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 30 23) |c_ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 22 0) |c_ULTIMATE.start_floor_float_~i0~0#1|)) |c_ULTIMATE.start_main_~y~0#1|) (or (bvult (bvand (_ bv2147483647 32) |c_ULTIMATE.start_floor_float_~i0~0#1|) (_ bv2139095040 32)) (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) (fp.gt |c_ULTIMATE.start_main_~y~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-19 13:43:06,563 WARN L860 $PredicateComparison]: unable to prove that (and (or (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (bvult |c_ULTIMATE.start_floor_float_~ix~6#1| (_ bv2139095040 32))) (fp.gt |c_ULTIMATE.start_main_~y~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|ULTIMATE.start_floor_float_~i0~0#1| (_ BitVec 32))) (and (= (fp ((_ extract 31 31) |ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 30 23) |ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 22 0) |ULTIMATE.start_floor_float_~i0~0#1|)) |c_ULTIMATE.start_main_~y~0#1|) (= |c_ULTIMATE.start_floor_float_~ix~6#1| (bvand (_ bv2147483647 32) |ULTIMATE.start_floor_float_~i0~0#1|))))) is different from true [2021-11-19 13:43:08,803 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_floor_float_~i0~0#1| (_ BitVec 32))) (and (= (fp ((_ extract 31 31) |ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 30 23) |ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 22 0) |ULTIMATE.start_floor_float_~i0~0#1|)) |c_ULTIMATE.start_main_~y~0#1|) (not (bvult (bvand (_ bv2147483647 32) |ULTIMATE.start_floor_float_~i0~0#1|) (_ bv2139095040 32))))) (fp.gt |c_ULTIMATE.start_main_~y~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0))))) is different from true [2021-11-19 13:43:11,658 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_fmod_float_~y#1| (_ FloatingPoint 8 24))) (not (fp.eq (let ((.cse0 (fp.mul c_currentRoundingMode |c_ULTIMATE.start_fmod_float_~x#1| |ULTIMATE.start_fmod_float_~y#1|))) (fp.div c_currentRoundingMode .cse0 .cse0)) ((_ to_fp 8 24) c_currentRoundingMode 1.0)))) (exists ((|ULTIMATE.start_floor_float_~i0~0#1| (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) |ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 30 23) |ULTIMATE.start_floor_float_~i0~0#1|) ((_ extract 22 0) |ULTIMATE.start_floor_float_~i0~0#1|)))) (and (not (bvult (bvand (_ bv2147483647 32) |ULTIMATE.start_floor_float_~i0~0#1|) (_ bv2139095040 32))) (fp.gt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_fmod_float_~x#1| .cse1)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-19 13:43:16,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:17,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:20,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:22,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:26,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:28,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:31,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:33,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:35,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:37,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:39,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:41,691 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:43,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:46,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:49,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:50,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:53,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:55,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:57,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:43:59,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:02,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:04,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:06,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:09,731 INFO L93 Difference]: Finished difference Result 445 states and 595 transitions. [2021-11-19 13:44:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:44:09,741 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 33 [2021-11-19 13:44:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:09,744 INFO L225 Difference]: With dead ends: 445 [2021-11-19 13:44:09,744 INFO L226 Difference]: Without dead ends: 255 [2021-11-19 13:44:09,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=49, Invalid=112, Unknown=11, NotChecked=290, Total=462 [2021-11-19 13:44:09,747 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 3 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 1758 IncrementalHoareTripleChecker+Unchecked, 58.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:09,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1716 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 19 Unknown, 1758 Unchecked, 58.7s Time] [2021-11-19 13:44:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-19 13:44:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-19 13:44:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.344) internal successors, (336), 250 states have internal predecessors, (336), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:44:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 342 transitions. [2021-11-19 13:44:09,771 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 342 transitions. Word has length 33 [2021-11-19 13:44:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:09,771 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 342 transitions. [2021-11-19 13:44:09,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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) [2021-11-19 13:44:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 342 transitions. [2021-11-19 13:44:09,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-19 13:44:09,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:09,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:09,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:44:09,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:09,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:44:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 428745245, now seen corresponding path program 1 times [2021-11-19 13:44:09,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:09,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743904607] [2021-11-19 13:44:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:09,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:09,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:09,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:10,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:44:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:11,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 13:44:11,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:11,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:44:13,162 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 13:44:13,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 58 [2021-11-19 13:44:13,900 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:44:13,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 46 [2021-11-19 13:44:15,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:15,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:44:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:19,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:44:19,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743904607] [2021-11-19 13:44:19,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743904607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:19,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:19,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-19 13:44:19,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996358546] [2021-11-19 13:44:19,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:19,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:44:19,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:44:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:44:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:44:19,432 INFO L87 Difference]: Start difference. First operand 255 states and 342 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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) [2021-11-19 13:44:22,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:26,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:29,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:32,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:35,030 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:37,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:39,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:42,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:45,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:47,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:50,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:52,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:44:55,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:55,266 INFO L93 Difference]: Finished difference Result 455 states and 605 transitions. [2021-11-19 13:44:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:55,277 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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 33 [2021-11-19 13:44:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:55,279 INFO L225 Difference]: With dead ends: 455 [2021-11-19 13:44:55,279 INFO L226 Difference]: Without dead ends: 265 [2021-11-19 13:44:55,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:44:55,282 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 25 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:55,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 3441 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 10 Unknown, 292 Unchecked, 35.1s Time] [2021-11-19 13:44:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-19 13:44:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 255. [2021-11-19 13:44:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.344) internal successors, (336), 250 states have internal predecessors, (336), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:44:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 342 transitions. [2021-11-19 13:44:55,302 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 342 transitions. Word has length 33 [2021-11-19 13:44:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:55,303 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 342 transitions. [2021-11-19 13:44:55,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 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) [2021-11-19 13:44:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 342 transitions. [2021-11-19 13:44:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:44:55,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:55,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:55,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:44:55,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:44:55,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:44:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1879190526, now seen corresponding path program 1 times [2021-11-19 13:44:55,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:44:55,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735073469] [2021-11-19 13:44:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:55,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:44:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:44:55,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:44:55,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:44:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:56,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 13:44:56,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:44:57,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:44:58,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 33 [2021-11-19 13:44:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:59,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:02,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:45:02,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735073469] [2021-11-19 13:45:02,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735073469] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:45:02,890 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:45:02,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-19 13:45:02,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617276696] [2021-11-19 13:45:02,891 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:45:02,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:45:02,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:45:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:45:02,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:45:02,893 INFO L87 Difference]: Start difference. First operand 255 states and 342 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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) [2021-11-19 13:45:02,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:45:02,927 INFO L93 Difference]: Finished difference Result 486 states and 650 transitions. [2021-11-19 13:45:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:45:02,928 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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) Word has length 34 [2021-11-19 13:45:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:45:02,930 INFO L225 Difference]: With dead ends: 486 [2021-11-19 13:45:02,930 INFO L226 Difference]: Without dead ends: 260 [2021-11-19 13:45:02,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:45:02,932 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 29 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:45:02,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 3190 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 204 Unchecked, 0.0s Time] [2021-11-19 13:45:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-19 13:45:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 255. [2021-11-19 13:45:02,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.34) internal successors, (335), 250 states have internal predecessors, (335), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:45:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 341 transitions. [2021-11-19 13:45:02,947 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 341 transitions. Word has length 34 [2021-11-19 13:45:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:45:02,948 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 341 transitions. [2021-11-19 13:45:02,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 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) [2021-11-19 13:45:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 341 transitions. [2021-11-19 13:45:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:45:02,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:45:02,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:45:02,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:45:03,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:45:03,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:45:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:45:03,177 INFO L85 PathProgramCache]: Analyzing trace with hash -492548736, now seen corresponding path program 1 times [2021-11-19 13:45:03,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:45:03,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901977682] [2021-11-19 13:45:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:45:03,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:45:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:45:03,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:45:03,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:45:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:45:04,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:45:04,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:45:04,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:45:06,277 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 13:45:06,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 63 [2021-11-19 13:45:07,020 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:45:07,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 51 [2021-11-19 13:45:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:08,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:45:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:45:13,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:45:13,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901977682] [2021-11-19 13:45:13,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901977682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:45:13,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:45:13,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-19 13:45:13,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063627922] [2021-11-19 13:45:13,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:45:13,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:45:13,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:45:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:45:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:45:13,470 INFO L87 Difference]: Start difference. First operand 255 states and 341 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-19 13:45:17,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:19,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:21,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:23,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:25,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:27,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:29,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:35,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:37,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:42,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:44,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:46,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:48,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:51,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:53,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:55,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:57,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:45:59,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:00,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:03,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:05,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:07,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:08,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:11,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:12,647 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:14,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:17,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:19,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:21,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:24,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:26,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:29,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:46:33,404 INFO L93 Difference]: Finished difference Result 626 states and 838 transitions. [2021-11-19 13:46:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:46:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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 34 [2021-11-19 13:46:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:46:33,417 INFO L225 Difference]: With dead ends: 626 [2021-11-19 13:46:33,417 INFO L226 Difference]: Without dead ends: 436 [2021-11-19 13:46:33,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:46:33,419 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 491 mSDsluCounter, 5695 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 8 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 6258 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 509 IncrementalHoareTripleChecker+Unchecked, 78.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:46:33,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 6258 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 195 Invalid, 25 Unknown, 509 Unchecked, 78.9s Time] [2021-11-19 13:46:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-19 13:46:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 256. [2021-11-19 13:46:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.3386454183266931) internal successors, (336), 251 states have internal predecessors, (336), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:46:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 342 transitions. [2021-11-19 13:46:33,435 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 342 transitions. Word has length 34 [2021-11-19 13:46:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:46:33,435 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 342 transitions. [2021-11-19 13:46:33,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 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) [2021-11-19 13:46:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 342 transitions. [2021-11-19 13:46:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 13:46:33,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:46:33,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:46:33,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:46:33,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:46:33,649 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:46:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:46:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash 24417853, now seen corresponding path program 1 times [2021-11-19 13:46:33,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:46:33,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137595305] [2021-11-19 13:46:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:46:33,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:46:33,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:46:33,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:46:33,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:46:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:46:34,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 13:46:34,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:46:35,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:46:37,193 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 13:46:37,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 72 [2021-11-19 13:46:38,047 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:46:38,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 60 [2021-11-19 13:46:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:46:40,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:46:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:46:45,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:46:45,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137595305] [2021-11-19 13:46:45,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137595305] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:46:45,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:46:45,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-19 13:46:45,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743675258] [2021-11-19 13:46:45,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:46:45,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:46:45,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:46:45,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:46:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:46:45,162 INFO L87 Difference]: Start difference. First operand 256 states and 342 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-19 13:46:49,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:51,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:53,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:46:55,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:00,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:04,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:06,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:09,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:10,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:14,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:16,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:18,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:20,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:22,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:24,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:26,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:27,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:29,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:31,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:33,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:35,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:37,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:40,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:42,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:45,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:47,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:49,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:47:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:47:53,961 INFO L93 Difference]: Finished difference Result 840 states and 1130 transitions. [2021-11-19 13:47:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:47:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 34 [2021-11-19 13:47:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:47:53,975 INFO L225 Difference]: With dead ends: 840 [2021-11-19 13:47:53,975 INFO L226 Difference]: Without dead ends: 650 [2021-11-19 13:47:53,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:47:53,977 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 536 mSDsluCounter, 5903 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 6470 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 717 IncrementalHoareTripleChecker+Unchecked, 67.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:47:53,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 6470 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 20 Unknown, 717 Unchecked, 67.9s Time] [2021-11-19 13:47:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-11-19 13:47:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 266. [2021-11-19 13:47:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 261 states have (on average 1.3256704980842913) internal successors, (346), 261 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:47:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 352 transitions. [2021-11-19 13:47:53,999 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 352 transitions. Word has length 34 [2021-11-19 13:47:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:47:54,000 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 352 transitions. [2021-11-19 13:47:54,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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) [2021-11-19 13:47:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 352 transitions. [2021-11-19 13:47:54,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 13:47:54,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:47:54,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:47:54,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:47:54,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:47:54,216 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:47:54,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:47:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1540561960, now seen corresponding path program 1 times [2021-11-19 13:47:54,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:47:54,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491483381] [2021-11-19 13:47:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:47:54,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:47:54,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:47:54,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:47:54,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:47:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:55,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 13:47:55,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:47:55,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:47:57,634 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 13:47:57,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 68 [2021-11-19 13:47:58,437 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 13:47:58,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 56 [2021-11-19 13:48:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:00,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:04,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:48:04,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491483381] [2021-11-19 13:48:04,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491483381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:48:04,987 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:48:04,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-19 13:48:04,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238313265] [2021-11-19 13:48:04,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:48:04,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:48:04,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:48:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:48:04,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:48:04,990 INFO L87 Difference]: Start difference. First operand 266 states and 352 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) [2021-11-19 13:48:08,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:09,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:15,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:18,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:21,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:23,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:25,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:27,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:29,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:31,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:33,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:35,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:38,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:39,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:48:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:48:41,565 INFO L93 Difference]: Finished difference Result 457 states and 606 transitions. [2021-11-19 13:48:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:48:41,574 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) Word has length 35 [2021-11-19 13:48:41,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:48:41,575 INFO L225 Difference]: With dead ends: 457 [2021-11-19 13:48:41,575 INFO L226 Difference]: Without dead ends: 267 [2021-11-19 13:48:41,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:48:41,577 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 20 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 412 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:48:41,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 3709 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 9 Unknown, 412 Unchecked, 35.7s Time] [2021-11-19 13:48:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-19 13:48:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-19 13:48:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 262 states have (on average 1.3244274809160306) internal successors, (347), 262 states have internal predecessors, (347), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:48:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 353 transitions. [2021-11-19 13:48:41,587 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 353 transitions. Word has length 35 [2021-11-19 13:48:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:48:41,587 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 353 transitions. [2021-11-19 13:48:41,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 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) [2021-11-19 13:48:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 353 transitions. [2021-11-19 13:48:41,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 13:48:41,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:48:41,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:48:41,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:48:41,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:48:41,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:48:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:48:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash -141796000, now seen corresponding path program 1 times [2021-11-19 13:48:41,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:48:41,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898846370] [2021-11-19 13:48:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:48:41,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:48:41,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:48:41,801 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:48:41,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:48:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:48:42,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 13:48:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:43,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:48:44,596 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-19 13:48:44,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 54 [2021-11-19 13:48:45,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-19 13:48:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:49,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:48:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:48:55,579 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:48:55,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898846370] [2021-11-19 13:48:55,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898846370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:48:55,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:48:55,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-11-19 13:48:55,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102928876] [2021-11-19 13:48:55,580 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:48:55,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 13:48:55,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:48:55,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 13:48:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:48:55,582 INFO L87 Difference]: Start difference. First operand 267 states and 353 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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) [2021-11-19 13:48:58,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:00,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:03,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:05,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:06,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:11,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:14,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:18,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:20,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:23,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:25,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:27,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:29,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:32,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:34,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:36,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:39,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:41,452 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:43,455 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:44,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:47,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:49,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:50,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:52,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:54,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:56,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:49:59,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:01,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:03,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:05,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:07,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:09,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:11,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:14,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:16,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:19,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:20,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:22,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:50:25,905 INFO L93 Difference]: Finished difference Result 681 states and 881 transitions. [2021-11-19 13:50:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:50:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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 35 [2021-11-19 13:50:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:50:25,920 INFO L225 Difference]: With dead ends: 681 [2021-11-19 13:50:25,920 INFO L226 Difference]: Without dead ends: 673 [2021-11-19 13:50:25,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-11-19 13:50:25,921 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 549 mSDsluCounter, 7952 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 14 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 8598 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 334 IncrementalHoareTripleChecker+Unchecked, 89.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:50:25,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 8598 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 147 Invalid, 29 Unknown, 334 Unchecked, 89.3s Time] [2021-11-19 13:50:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-19 13:50:25,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 276. [2021-11-19 13:50:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.3173431734317342) internal successors, (357), 271 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:50:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 363 transitions. [2021-11-19 13:50:25,937 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 363 transitions. Word has length 35 [2021-11-19 13:50:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:50:25,938 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 363 transitions. [2021-11-19 13:50:25,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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) [2021-11-19 13:50:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 363 transitions. [2021-11-19 13:50:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-19 13:50:25,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:50:25,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:50:25,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:50:26,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:50:26,152 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:50:26,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:50:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash 742838264, now seen corresponding path program 1 times [2021-11-19 13:50:26,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:50:26,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667760799] [2021-11-19 13:50:26,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:50:26,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:50:26,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:50:26,154 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:50:26,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:50:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:50:27,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 13:50:27,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:50:27,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:50:28,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-11-19 13:50:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:50:33,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:50:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:50:37,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:50:37,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667760799] [2021-11-19 13:50:37,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667760799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:50:37,595 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:50:37,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2021-11-19 13:50:37,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085247813] [2021-11-19 13:50:37,595 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:50:37,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 13:50:37,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:50:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 13:50:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=270, Unknown=1, NotChecked=0, Total=342 [2021-11-19 13:50:37,596 INFO L87 Difference]: Start difference. First operand 276 states and 363 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 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) [2021-11-19 13:50:44,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:48,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:50,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:52,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:54,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:50:59,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:01,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:03,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:04,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:07,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:09,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:11,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:13,319 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:15,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:17,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:19,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:21,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:23,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:25,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:27,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:29,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:31,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:33,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:36,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:37,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:39,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:41,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:44,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:46,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:48,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:51,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:54,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:56,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:51:58,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:00,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:03,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:05,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:07,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:09,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:11,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:13,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:15,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:52:19,927 INFO L93 Difference]: Finished difference Result 734 states and 952 transitions. [2021-11-19 13:52:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:52:19,937 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 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 36 [2021-11-19 13:52:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:52:19,942 INFO L225 Difference]: With dead ends: 734 [2021-11-19 13:52:19,942 INFO L226 Difference]: Without dead ends: 726 [2021-11-19 13:52:19,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=96, Invalid=409, Unknown=1, NotChecked=0, Total=506 [2021-11-19 13:52:19,943 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 827 mSDsluCounter, 7982 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 10 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 8818 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 686 IncrementalHoareTripleChecker+Unchecked, 101.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:52:19,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 8818 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 225 Invalid, 34 Unknown, 686 Unchecked, 101.3s Time] [2021-11-19 13:52:19,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-19 13:52:19,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 276. [2021-11-19 13:52:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.3173431734317342) internal successors, (357), 271 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:52:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 363 transitions. [2021-11-19 13:52:19,963 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 363 transitions. Word has length 36 [2021-11-19 13:52:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:52:19,963 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 363 transitions. [2021-11-19 13:52:19,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 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) [2021-11-19 13:52:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 363 transitions. [2021-11-19 13:52:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 13:52:19,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:52:19,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:52:19,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:52:20,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:52:20,180 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:52:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:52:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash -114827365, now seen corresponding path program 1 times [2021-11-19 13:52:20,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:52:20,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559170947] [2021-11-19 13:52:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:52:20,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:52:20,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:52:20,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:52:20,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:52:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:52:21,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-19 13:52:21,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:52:22,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:52:22,802 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-19 13:52:22,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 63 [2021-11-19 13:52:25,502 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-19 13:52:25,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 69 [2021-11-19 13:52:26,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2021-11-19 13:52:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:52:29,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:52:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:52:45,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:52:45,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559170947] [2021-11-19 13:52:45,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559170947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:52:45,641 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:52:45,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 13] imperfect sequences [] total 23 [2021-11-19 13:52:45,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059333635] [2021-11-19 13:52:45,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:52:45,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 13:52:45,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:52:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 13:52:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:52:45,642 INFO L87 Difference]: Start difference. First operand 276 states and 363 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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) [2021-11-19 13:52:54,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:56,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:52:59,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:02,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:04,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:06,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:08,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:10,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:12,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:13,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:16,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:18,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:19,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:22,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:53:22,580 INFO L93 Difference]: Finished difference Result 310 states and 398 transitions. [2021-11-19 13:53:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:53:22,590 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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 37 [2021-11-19 13:53:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:53:22,591 INFO L225 Difference]: With dead ends: 310 [2021-11-19 13:53:22,591 INFO L226 Difference]: Without dead ends: 301 [2021-11-19 13:53:22,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-11-19 13:53:22,593 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 106 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 336 IncrementalHoareTripleChecker+Unchecked, 36.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:53:22,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 3725 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 10 Unknown, 336 Unchecked, 36.5s Time] [2021-11-19 13:53:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-11-19 13:53:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 293. [2021-11-19 13:53:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 288 states have (on average 1.3020833333333333) internal successors, (375), 288 states have internal predecessors, (375), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:53:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 381 transitions. [2021-11-19 13:53:22,609 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 381 transitions. Word has length 37 [2021-11-19 13:53:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:53:22,609 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 381 transitions. [2021-11-19 13:53:22,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 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) [2021-11-19 13:53:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 381 transitions. [2021-11-19 13:53:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 13:53:22,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:53:22,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:53:22,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:53:22,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:53:22,832 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:53:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:53:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 238529626, now seen corresponding path program 1 times [2021-11-19 13:53:22,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:53:22,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015185524] [2021-11-19 13:53:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:53:22,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:53:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:53:22,835 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:53:22,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:53:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:53:24,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 13:53:24,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:53:25,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2021-11-19 13:53:26,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 50 [2021-11-19 13:53:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:53:27,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:53:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:53:32,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:53:32,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015185524] [2021-11-19 13:53:32,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015185524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:53:32,043 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:53:32,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-19 13:53:32,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105432425] [2021-11-19 13:53:32,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:53:32,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:53:32,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:53:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:53:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:53:32,044 INFO L87 Difference]: Start difference. First operand 293 states and 381 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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) [2021-11-19 13:53:36,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:45,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:47,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:50,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:52,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:55,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:53:57,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:00,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:02,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:04,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:06,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:07,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:10,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:12,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:14,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:16,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:18,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:21,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:23,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:25,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:54:28,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:54:28,329 INFO L93 Difference]: Finished difference Result 691 states and 912 transitions. [2021-11-19 13:54:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:54:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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 37 [2021-11-19 13:54:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:54:28,343 INFO L225 Difference]: With dead ends: 691 [2021-11-19 13:54:28,343 INFO L226 Difference]: Without dead ends: 501 [2021-11-19 13:54:28,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:54:28,344 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 294 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 4 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 55.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:54:28,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 3908 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 227 Invalid, 17 Unknown, 210 Unchecked, 55.1s Time] [2021-11-19 13:54:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-19 13:54:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 306. [2021-11-19 13:54:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 301 states have (on average 1.2890365448504983) internal successors, (388), 301 states have internal predecessors, (388), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 13:54:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 394 transitions. [2021-11-19 13:54:28,364 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 394 transitions. Word has length 37 [2021-11-19 13:54:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:54:28,365 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 394 transitions. [2021-11-19 13:54:28,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 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) [2021-11-19 13:54:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 394 transitions. [2021-11-19 13:54:28,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 13:54:28,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:54:28,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:54:28,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:54:28,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:54:28,580 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:54:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:54:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash -384824269, now seen corresponding path program 1 times [2021-11-19 13:54:28,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:54:28,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980181645] [2021-11-19 13:54:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:54:28,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:54:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:54:28,582 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:54:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d600b2f8-dd49-4a9e-912a-553f5fde7656/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:54:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:54:29,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-19 13:54:29,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:54:30,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-19 13:54:32,486 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-19 13:54:32,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 59 [2021-11-19 13:54:33,500 INFO L354 Elim1Store]: treesize reduction 32, result has 41.8 percent of original size [2021-11-19 13:54:33,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 102 [2021-11-19 13:54:37,982 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-19 13:54:37,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 70 [2021-11-19 13:54:39,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 94 [2021-11-19 13:54:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:54:42,603 INFO L328 TraceCheckSpWp]: Computing backward predicates...