./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0874.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0874.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF --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 0982eedb9d6e93530fad43cd68d66909a89a476f3c25408c32fb45fa977665ac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:24:41,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:24:41,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:24:41,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:24:41,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:24:41,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:24:41,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:24:41,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:24:41,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:24:41,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:24:41,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:24:41,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:24:41,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:24:41,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:24:41,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:24:41,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:24:41,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:24:41,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:24:41,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:24:41,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:24:41,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:24:41,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:24:41,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:24:41,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:24:41,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:24:41,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:24:41,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:24:41,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:24:41,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:24:41,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:24:41,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:24:41,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:24:41,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:24:41,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:24:41,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:24:41,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:24:41,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:24:41,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:24:41,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:24:41,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:24:41,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:24:41,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:24:41,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:24:41,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:24:41,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:24:41,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:24:41,768 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:24:41,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:24:41,769 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:24:41,772 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:24:41,773 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:24:41,773 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:24:41,774 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:24:41,774 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:24:41,775 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:24:41,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:24:41,776 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:24:41,780 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:24:41,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:24:41,781 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:24:41,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:24:41,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:24:41,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:24:41,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:24:41,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:24:41,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:24:41,784 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:24:41,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:24:41,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:24:41,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:24:41,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:24:41,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:24:41,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:24:41,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:24:41,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:24:41,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:24:41,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:24:41,789 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:24:41,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:24:41,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:24:41,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:24:41,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:24:41,791 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_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0982eedb9d6e93530fad43cd68d66909a89a476f3c25408c32fb45fa977665ac [2021-11-12 22:24:42,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:24:42,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:24:42,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:24:42,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:24:42,109 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:24:42,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0874.c [2021-11-12 22:24:42,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/a5587734c/ea082e82d2ed4a0ba8768f6c8cd92ebb/FLAG55ef86410 [2021-11-12 22:24:42,785 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:24:42,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/sv-benchmarks/c/float-newlib/float_req_bl_0874.c [2021-11-12 22:24:42,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/a5587734c/ea082e82d2ed4a0ba8768f6c8cd92ebb/FLAG55ef86410 [2021-11-12 22:24:43,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/a5587734c/ea082e82d2ed4a0ba8768f6c8cd92ebb [2021-11-12 22:24:43,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:24:43,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:24:43,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:43,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:24:43,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:24:43,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:43" (1/1) ... [2021-11-12 22:24:43,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f137202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:43, skipping insertion in model container [2021-11-12 22:24:43,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:43" (1/1) ... [2021-11-12 22:24:43,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:24:43,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:24:43,427 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:1751) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$47(StandardFunctionHandler.java:380) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430) 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:2007) 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:1629) 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:1068) 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:1606) 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:1068) 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:1452) 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:3254) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2328) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) 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) [2021-11-12 22:24:43,433 INFO L158 Benchmark]: Toolchain (without parser) took 338.55ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 112.3MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:24:43,434 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 77.6MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:24:43,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.71ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 112.3MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:24:43,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 77.6MB. Free memory was 38.0MB in the beginning and 38.0MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.71ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 112.3MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:835) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0874.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF --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 0982eedb9d6e93530fad43cd68d66909a89a476f3c25408c32fb45fa977665ac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:24:45,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:24:45,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:24:45,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:24:45,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:24:45,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:24:45,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:24:45,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:24:45,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:24:45,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:24:45,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:24:45,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:24:45,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:24:45,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:24:45,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:24:45,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:24:45,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:24:45,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:24:45,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:24:45,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:24:45,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:24:45,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:24:45,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:24:45,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:24:45,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:24:45,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:24:45,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:24:45,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:24:45,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:24:45,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:24:45,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:24:45,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:24:45,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:24:45,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:24:45,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:24:45,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:24:45,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:24:45,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:24:45,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:24:45,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:24:45,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:24:45,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:24:45,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:24:45,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:24:45,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:24:45,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:24:45,744 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:24:45,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:24:45,745 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:24:45,745 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:24:45,745 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:24:45,745 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:24:45,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:24:45,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:24:45,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:24:45,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:24:45,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:24:45,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:24:45,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:24:45,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:24:45,749 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:24:45,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:24:45,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:24:45,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:24:45,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:24:45,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:24:45,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:24:45,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:24:45,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:24:45,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:24:45,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:24:45,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:24:45,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:24:45,752 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:24:45,752 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:24:45,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:24:45,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:24:45,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:24:45,753 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_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0982eedb9d6e93530fad43cd68d66909a89a476f3c25408c32fb45fa977665ac [2021-11-12 22:24:46,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:24:46,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:24:46,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:24:46,186 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:24:46,187 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:24:46,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0874.c [2021-11-12 22:24:46,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/d9863c1de/18faecfa20ef40169ee661f498ec28da/FLAGd172e5018 [2021-11-12 22:24:46,839 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:24:46,840 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/sv-benchmarks/c/float-newlib/float_req_bl_0874.c [2021-11-12 22:24:46,851 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/d9863c1de/18faecfa20ef40169ee661f498ec28da/FLAGd172e5018 [2021-11-12 22:24:47,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/data/d9863c1de/18faecfa20ef40169ee661f498ec28da [2021-11-12 22:24:47,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:24:47,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:24:47,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:47,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:24:47,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:24:47,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:47,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b7a5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47, skipping insertion in model container [2021-11-12 22:24:47,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:47,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:24:47,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:24:47,698 WARN L228 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_da5f6151-11b0-4279-9c0c-2a98d5558c6a/sv-benchmarks/c/float-newlib/float_req_bl_0874.c[14102,14115] [2021-11-12 22:24:47,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:24:47,732 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:24:47,889 WARN L228 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_da5f6151-11b0-4279-9c0c-2a98d5558c6a/sv-benchmarks/c/float-newlib/float_req_bl_0874.c[14102,14115] [2021-11-12 22:24:47,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:24:47,912 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:24:47,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47 WrapperNode [2021-11-12 22:24:47,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:24:47,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:24:47,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:24:47,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:24:47,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:47,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:24:48,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:24:48,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:24:48,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:24:48,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:24:48,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:24:48,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:24:48,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:24:48,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (1/1) ... [2021-11-12 22:24:48,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:24:48,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:24:48,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:24:48,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:24:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-11-12 22:24:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-12 22:24:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:24:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:24:48,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:24:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-12 22:24:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:24:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:25:11,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:25:11,864 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-12 22:25:11,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:25:11 BoogieIcfgContainer [2021-11-12 22:25:11,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:25:11,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:25:11,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:25:11,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:25:11,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:24:47" (1/3) ... [2021-11-12 22:25:11,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1205e4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:25:11, skipping insertion in model container [2021-11-12 22:25:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:24:47" (2/3) ... [2021-11-12 22:25:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1205e4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:25:11, skipping insertion in model container [2021-11-12 22:25:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:25:11" (3/3) ... [2021-11-12 22:25:11,874 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0874.c [2021-11-12 22:25:11,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:25:11,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:25:11,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:25:11,930 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 [2021-11-12 22:25:11,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:25:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 199 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 191 states have internal predecessors, (326), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 22:25:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:25:11,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:11,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:11,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:11,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:11,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2090504015, now seen corresponding path program 1 times [2021-11-12 22:25:11,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:11,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804109884] [2021-11-12 22:25:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:11,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:11,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:12,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:12,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:25:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:13,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:25:13,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:13,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:13,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:13,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804109884] [2021-11-12 22:25:13,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804109884] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:13,375 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:13,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:25:13,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375794167] [2021-11-12 22:25:13,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:13,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:25:13,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:25:13,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:25:13,411 INFO L87 Difference]: Start difference. First operand has 199 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 191 states have internal predecessors, (326), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:25:13,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:13,473 INFO L93 Difference]: Finished difference Result 395 states and 673 transitions. [2021-11-12 22:25:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:25:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-12 22:25:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:13,486 INFO L225 Difference]: With dead ends: 395 [2021-11-12 22:25:13,486 INFO L226 Difference]: Without dead ends: 195 [2021-11-12 22:25:13,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:25:13,494 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:13,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:25:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-12 22:25:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-12 22:25:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.3262032085561497) internal successors, (248), 187 states have internal predecessors, (248), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 22:25:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 258 transitions. [2021-11-12 22:25:13,549 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 258 transitions. Word has length 20 [2021-11-12 22:25:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:13,550 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 258 transitions. [2021-11-12 22:25:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:25:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 258 transitions. [2021-11-12 22:25:13,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 22:25:13,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:13,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:13,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:13,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:13,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:13,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -85606773, now seen corresponding path program 1 times [2021-11-12 22:25:13,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:13,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165756863] [2021-11-12 22:25:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:13,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:13,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:13,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:13,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:25:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:14,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:25:14,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:15,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:16,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:16,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165756863] [2021-11-12 22:25:16,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165756863] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:16,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:16,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:25:16,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308075536] [2021-11-12 22:25:16,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:16,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:25:16,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:25:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:25:16,630 INFO L87 Difference]: Start difference. First operand 195 states and 258 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:25:19,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:22,347 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 [] [2021-11-12 22:25:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:23,848 INFO L93 Difference]: Finished difference Result 585 states and 763 transitions. [2021-11-12 22:25:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:25:23,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-12 22:25:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:23,860 INFO L225 Difference]: With dead ends: 585 [2021-11-12 22:25:23,867 INFO L226 Difference]: Without dead ends: 577 [2021-11-12 22:25:23,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:25:23,870 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 529 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6792.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.65ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 7019.18ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:23,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 2725 Invalid, 157 Unknown, 0 Unchecked, 18.65ms Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 1 Unknown, 91 Unchecked, 7019.18ms Time] [2021-11-12 22:25:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-12 22:25:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 195. [2021-11-12 22:25:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.320855614973262) internal successors, (247), 187 states have internal predecessors, (247), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 22:25:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-11-12 22:25:23,913 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 25 [2021-11-12 22:25:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:23,914 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-11-12 22:25:23,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:25:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-11-12 22:25:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:25:23,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:23,915 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] [2021-11-12 22:25:23,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:24,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:24,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash 727300614, now seen corresponding path program 1 times [2021-11-12 22:25:24,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:24,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552469101] [2021-11-12 22:25:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:24,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:24,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:24,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:25:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:25,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:25:25,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:25,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:26,881 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:26,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552469101] [2021-11-12 22:25:26,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552469101] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:26,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:26,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-12 22:25:26,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178164613] [2021-11-12 22:25:26,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:26,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:25:26,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:25:26,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:25:26,885 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:25:30,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:35,130 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 [] [2021-11-12 22:25:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:37,239 INFO L93 Difference]: Finished difference Result 507 states and 659 transitions. [2021-11-12 22:25:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:25:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-11-12 22:25:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:37,244 INFO L225 Difference]: With dead ends: 507 [2021-11-12 22:25:37,244 INFO L226 Difference]: Without dead ends: 499 [2021-11-12 22:25:37,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:25:37,246 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 482 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9294.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.62ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 9710.45ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:37,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 3704 Invalid, 378 Unknown, 0 Unchecked, 11.62ms Time], IncrementalHoareTripleChecker [19 Valid, 136 Invalid, 1 Unknown, 222 Unchecked, 9710.45ms Time] [2021-11-12 22:25:37,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-12 22:25:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 195. [2021-11-12 22:25:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 187 states have (on average 1.3155080213903743) internal successors, (246), 187 states have internal predecessors, (246), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-12 22:25:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 256 transitions. [2021-11-12 22:25:37,266 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 256 transitions. Word has length 27 [2021-11-12 22:25:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:37,266 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 256 transitions. [2021-11-12 22:25:37,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:25:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 256 transitions. [2021-11-12 22:25:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:25:37,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:37,268 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] [2021-11-12 22:25:37,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:37,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:37,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -82046012, now seen corresponding path program 1 times [2021-11-12 22:25:37,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:37,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790714983] [2021-11-12 22:25:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:37,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:37,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:37,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:37,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:25:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:38,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 22:25:38,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:38,659 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 [2021-11-12 22:25:38,973 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-12 22:25:38,973 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 60 treesize of output 51 [2021-11-12 22:25:40,784 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-12 22:25:40,784 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 75 treesize of output 66 [2021-11-12 22:25:41,545 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 67 treesize of output 51 [2021-11-12 22:25:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:42,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:46,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:46,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790714983] [2021-11-12 22:25:46,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_skolemized_q#valueAsBitvector_45|] [2021-11-12 22:25:46,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1047678059] [2021-11-12 22:25:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:46,871 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:25:46,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:25:46,873 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:25:46,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-12 22:25:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:52,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 22:25:52,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:52,861 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 [2021-11-12 22:25:53,169 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-12 22:25:53,169 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 60 treesize of output 51 [2021-11-12 22:25:54,372 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-12 22:25:54,373 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 75 treesize of output 66 [2021-11-12 22:25:55,248 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 67 treesize of output 51 [2021-11-12 22:25:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:25:56,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:59,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_skolemized_q#valueAsBitvector_45|] [2021-11-12 22:25:59,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922275395] [2021-11-12 22:25:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:59,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:25:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:25:59,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:25:59,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-12 22:25:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:59,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 22:25:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:59,837 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 [2021-11-12 22:26:00,141 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-12 22:26:00,142 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 60 treesize of output 51 [2021-11-12 22:26:01,534 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-12 22:26:01,534 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 75 treesize of output 66 [2021-11-12 22:26:02,460 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 67 treesize of output 51 [2021-11-12 22:26:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:26:03,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:06,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_skolemized_q#valueAsBitvector_45|] [2021-11-12 22:26:06,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:26:06,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 22:26:06,827 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 22:26:06,827 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 22:26:06,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:26:06,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:07,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:07,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:26:07,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:26:07,477 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-12 22:26:07,480 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:26:07,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:26:07 BoogieIcfgContainer [2021-11-12 22:26:07,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:26:07,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:26:07,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:26:07,508 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:26:07,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:25:11" (3/4) ... [2021-11-12 22:26:07,512 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:26:07,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:26:07,513 INFO L158 Benchmark]: Toolchain (without parser) took 80321.39ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 65.4MB in the beginning and 29.0MB in the end (delta: 36.4MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-12 22:26:07,513 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:26:07,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 720.63ms. Allocated memory is still 81.8MB. Free memory was 65.2MB in the beginning and 50.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 22:26:07,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.09ms. Allocated memory is still 81.8MB. Free memory was 50.4MB in the beginning and 46.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:26:07,515 INFO L158 Benchmark]: Boogie Preprocessor took 135.99ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 41.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:26:07,515 INFO L158 Benchmark]: RCFGBuilder took 23695.18ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 41.6MB in the beginning and 72.2MB in the end (delta: -30.6MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2021-11-12 22:26:07,515 INFO L158 Benchmark]: TraceAbstraction took 55639.59ms. Allocated memory is still 102.8MB. Free memory was 71.2MB in the beginning and 30.0MB in the end (delta: 41.2MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2021-11-12 22:26:07,516 INFO L158 Benchmark]: Witness Printer took 3.83ms. Allocated memory is still 102.8MB. Free memory is still 29.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:26:07,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 720.63ms. Allocated memory is still 81.8MB. Free memory was 65.2MB in the beginning and 50.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.09ms. Allocated memory is still 81.8MB. Free memory was 50.4MB in the beginning and 46.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 135.99ms. Allocated memory is still 81.8MB. Free memory was 46.2MB in the beginning and 41.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 23695.18ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 41.6MB in the beginning and 72.2MB in the end (delta: -30.6MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. * TraceAbstraction took 55639.59ms. Allocated memory is still 102.8MB. Free memory was 71.2MB in the beginning and 30.0MB in the end (delta: 41.2MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Witness Printer took 3.83ms. Allocated memory is still 102.8MB. Free memory is still 29.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 617]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L109] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L197-L199] static const float two25_scalbn = 3.355443200e+07, twom25_scalbn = 2.9802322388e-08, huge_scalbn = 1.0e+30, tiny_scalbn = 1.0e-30; [L267-L295] static const float bp_pow[] = { 1.0, 1.5, }, dp_h_pow[] = { 0.0, 5.84960938e-01, }, dp_l_pow[] = { 0.0, 1.56322085e-06, }, zero_pow = 0.0, one_pow = 1.0, two_pow = 2.0, two24_pow = 16777216.0, huge_pow = 1.0e30, tiny_pow = 1.0e-30, L1_pow = 6.0000002384e-01, L2_pow = 4.2857143283e-01, L3_pow = 3.3333334327e-01, L4_pow = 2.7272811532e-01, L5_pow = 2.3066075146e-01, L6_pow = 2.0697501302e-01, P1_pow = 1.6666667163e-01, P2_pow = -2.7777778450e-03, P3_pow = 6.6137559770e-05, P4_pow = -1.6533901999e-06, P5_pow = 4.1381369442e-08, lg2_pow = 6.9314718246e-01, lg2_h_pow = 6.93145752e-01, lg2_l_pow = 1.42860654e-06, ovt_pow = 4.2995665694e-08, cp = 9.6179670095e-01, cp_h_pow = 9.6179199219e-01, cp_l_pow = 4.7017383622e-06, ivln2_pow = 1.4426950216e+00, ivln2_h_pow = 1.4426879883e+00, ivln2_l_pow = 7.0526075433e-06; [L608] float x = __VERIFIER_nondet_float(); [L609] float y = -1.0f / 0.0f; [L611] CALL, EXPR fabs_float(x) [L253] __uint32_t ix; [L255] ieee_float_shape_type gf_u; [L256] gf_u.value = (x) [L257] EXPR gf_u.word [L257] (ix) = gf_u.word [L260] ieee_float_shape_type sf_u; [L261] sf_u.word = (ix & 0x7fffffff) [L262] EXPR sf_u.value [L262] (x) = sf_u.value [L264] return x; [L611] RET, EXPR fabs_float(x) [L611] COND TRUE fabs_float(x) < 1 [L613] CALL, EXPR __ieee754_powf(x, y) [L298] float z, ax, z_h, z_l, p_h, p_l; [L299] float y1, t1, t2, r, s, t, u, v, w; [L300] __int32_t i, j, k, yisint, n; [L301] __int32_t hx, hy, ix, iy, is; [L304] ieee_float_shape_type gf_u; [L305] gf_u.value = (x) [L306] EXPR gf_u.word [L306] (hx) = gf_u.word [L309] ieee_float_shape_type gf_u; [L310] gf_u.value = (y) [L311] EXPR gf_u.word [L311] (hy) = gf_u.word [L313] ix = hx & 0x7fffffff [L314] iy = hy & 0x7fffffff [L316] COND FALSE !(((iy) == 0)) [L319] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L320] COND FALSE !(ix == 0x3f800000) [L323] return __builtin_nanf(""); [L613] RET, EXPR __ieee754_powf(x, y) [L613] float res = __ieee754_powf(x, y); [L616] CALL, EXPR isinf_float(res) [L590] __int32_t ix; [L592] ieee_float_shape_type gf_u; [L593] gf_u.value = (x) [L594] EXPR gf_u.word [L594] (ix) = gf_u.word [L596] ix &= 0x7fffffff [L597] return ((ix) == 0x7f800000L); [L616] RET, EXPR isinf_float(res) [L616] COND TRUE !isinf_float(res) [L617] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 1024 SdHoareTripleChecker+Valid, 16729.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1011 mSDsluCounter, 6692 SdHoareTripleChecker+Invalid, 16087.68ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 313 IncrementalHoareTripleChecker+Unchecked, 5382 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 185 IncrementalHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 1310 mSDtfsCounter, 185 mSolverCounterSat, 33.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 686 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 41 QuantifiedInterpolants, 1251 SizeOfPredicates, 33 NumberOfNonLiveVariables, 609 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:26:07,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5f6151-11b0-4279-9c0c-2a98d5558c6a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN