./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9 --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 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 19:48:12,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:48:12,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:48:12,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:48:12,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:48:12,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:48:12,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:48:12,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:48:12,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:48:12,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:48:12,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:48:12,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:48:12,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:48:12,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:48:12,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:48:12,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:48:12,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:48:12,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:48:12,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:48:12,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:48:12,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:48:12,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:48:12,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:48:12,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:48:12,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:48:12,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:48:12,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:48:12,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:48:12,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:48:12,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:48:12,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:48:12,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:48:12,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:48:12,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:48:12,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:48:12,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:48:12,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:48:12,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:48:12,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:48:12,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:48:12,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:48:12,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:48:12,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:48:12,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:48:12,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:48:12,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:48:12,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:48:12,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:48:12,841 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:48:12,841 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:48:12,842 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:48:12,842 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:48:12,843 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:48:12,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:48:12,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:48:12,844 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:48:12,844 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:48:12,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:48:12,845 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:48:12,845 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:48:12,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:48:12,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:48:12,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:48:12,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:48:12,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:48:12,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:48:12,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:48:12,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:48:12,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:48:12,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:48:12,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:48:12,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:48:12,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:48:12,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:48:12,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:12,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:48:12,851 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:48:12,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:48:12,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:48:12,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:48:12,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:48:12,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:48:12,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:48:12,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 [2022-11-20 19:48:13,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:48:13,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:48:13,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:48:13,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:48:13,161 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:48:13,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-20 19:48:16,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:48:16,486 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:48:16,487 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-20 19:48:16,498 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data/c7b89dd47/710a8225b8f14eb5b60bf97960a33910/FLAGa125dc92c [2022-11-20 19:48:16,514 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data/c7b89dd47/710a8225b8f14eb5b60bf97960a33910 [2022-11-20 19:48:16,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:48:16,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:48:16,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:16,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:48:16,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:48:16,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:16" (1/1) ... [2022-11-20 19:48:16,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:16, skipping insertion in model container [2022-11-20 19:48:16,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:16" (1/1) ... [2022-11-20 19:48:16,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:48:16,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:48:16,754 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) 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:1646) 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:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) 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:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 19:48:16,759 INFO L158 Benchmark]: Toolchain (without parser) took 240.31ms. Allocated memory is still 188.7MB. Free memory was 143.6MB in the beginning and 133.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 19:48:16,759 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:48:16,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.99ms. Allocated memory is still 188.7MB. Free memory was 142.9MB in the beginning and 133.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 19:48:16,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.99ms. Allocated memory is still 188.7MB. Free memory was 142.9MB in the beginning and 133.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9 --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 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 19:48:18,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:48:18,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:48:19,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:48:19,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:48:19,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:48:19,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:48:19,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:48:19,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:48:19,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:48:19,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:48:19,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:48:19,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:48:19,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:48:19,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:48:19,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:48:19,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:48:19,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:48:19,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:48:19,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:48:19,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:48:19,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:48:19,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:48:19,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:48:19,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:48:19,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:48:19,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:48:19,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:48:19,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:48:19,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:48:19,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:48:19,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:48:19,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:48:19,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:48:19,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:48:19,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:48:19,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:48:19,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:48:19,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:48:19,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:48:19,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:48:19,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 19:48:19,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:48:19,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:48:19,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:48:19,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:48:19,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:48:19,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:48:19,141 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:48:19,141 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:48:19,141 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:48:19,141 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:48:19,142 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:48:19,143 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:48:19,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:48:19,144 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:48:19,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:48:19,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:48:19,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:48:19,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:48:19,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:48:19,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:48:19,146 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 19:48:19,146 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 19:48:19,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:48:19,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:48:19,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:48:19,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:48:19,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:48:19,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 19:48:19,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:48:19,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:19,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:48:19,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:48:19,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:48:19,149 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 19:48:19,149 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 19:48:19,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:48:19,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:48:19,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 19:48:19,150 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_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 [2022-11-20 19:48:19,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:48:19,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:48:19,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:48:19,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:48:19,547 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:48:19,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-20 19:48:22,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:48:23,082 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:48:23,082 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-11-20 19:48:23,100 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data/f14522183/00d5022c044c49af92d38b74c3f75ac7/FLAG74716140d [2022-11-20 19:48:23,115 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/data/f14522183/00d5022c044c49af92d38b74c3f75ac7 [2022-11-20 19:48:23,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:48:23,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:48:23,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:23,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:48:23,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:48:23,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc174a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23, skipping insertion in model container [2022-11-20 19:48:23,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:48:23,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:48:23,458 WARN L237 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_77d4c66a-dd90-4ef9-a30b-7554140bca9f/sv-benchmarks/c/float-newlib/double_req_bl_0883.c[14409,14422] [2022-11-20 19:48:23,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:48:23,477 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:48:23,618 WARN L237 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_77d4c66a-dd90-4ef9-a30b-7554140bca9f/sv-benchmarks/c/float-newlib/double_req_bl_0883.c[14409,14422] [2022-11-20 19:48:23,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:48:23,638 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:48:23,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23 WrapperNode [2022-11-20 19:48:23,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:23,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:48:23,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:48:23,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:48:23,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,706 INFO L138 Inliner]: procedures = 25, calls = 164, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 757 [2022-11-20 19:48:23,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:48:23,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:48:23,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:48:23,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:48:23,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:48:23,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:48:23,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:48:23,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:48:23,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (1/1) ... [2022-11-20 19:48:23,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:48:23,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:48:23,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:48:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:48:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-20 19:48:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2022-11-20 19:48:23,867 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2022-11-20 19:48:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-20 19:48:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 19:48:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 19:48:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-11-20 19:48:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 19:48:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:48:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:48:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 19:48:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:48:24,007 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:48:24,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:49:36,710 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:49:36,720 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:49:36,720 INFO L300 CfgBuilder]: Removed 60 assume(true) statements. [2022-11-20 19:49:36,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:36 BoogieIcfgContainer [2022-11-20 19:49:36,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:49:36,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:49:36,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:49:36,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:49:36,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:48:23" (1/3) ... [2022-11-20 19:49:36,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c11c17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:49:36, skipping insertion in model container [2022-11-20 19:49:36,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:23" (2/3) ... [2022-11-20 19:49:36,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c11c17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:49:36, skipping insertion in model container [2022-11-20 19:49:36,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:36" (3/3) ... [2022-11-20 19:49:36,734 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0883.c [2022-11-20 19:49:36,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:49:36,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:49:36,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:49:36,836 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@403dea11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:49:36,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:49:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 191 states have internal predecessors, (326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:49:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 19:49:36,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:36,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:36,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:49:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:36,861 INFO L85 PathProgramCache]: Analyzing trace with hash 846078371, now seen corresponding path program 1 times [2022-11-20 19:49:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:49:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372783149] [2022-11-20 19:49:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:36,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:36,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:49:36,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:49:36,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 19:49:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 19:49:37,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:49:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:37,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:49:37,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:49:37,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372783149] [2022-11-20 19:49:37,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372783149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:37,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:37,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:49:37,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777043796] [2022-11-20 19:49:37,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:37,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:49:37,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:49:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:49:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:49:37,324 INFO L87 Difference]: Start difference. First operand has 196 states, 190 states have (on average 1.7157894736842105) internal successors, (326), 191 states have internal predecessors, (326), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:37,373 INFO L93 Difference]: Finished difference Result 389 states and 663 transitions. [2022-11-20 19:49:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:49:37,375 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 19:49:37,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:37,384 INFO L225 Difference]: With dead ends: 389 [2022-11-20 19:49:37,385 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 19:49:37,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:49:37,392 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:37,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:49:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 19:49:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-20 19:49:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.3903743315508021) internal successors, (260), 187 states have internal predecessors, (260), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:49:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 266 transitions. [2022-11-20 19:49:37,444 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 266 transitions. Word has length 13 [2022-11-20 19:49:37,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:37,444 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 266 transitions. [2022-11-20 19:49:37,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 266 transitions. [2022-11-20 19:49:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 19:49:37,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:37,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:37,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 19:49:37,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:37,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:49:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -207932132, now seen corresponding path program 1 times [2022-11-20 19:49:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:49:37,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046927363] [2022-11-20 19:49:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:37,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:37,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:49:37,656 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:49:37,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 19:49:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:38,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 19:49:38,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:49:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:43,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:49:43,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:49:43,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046927363] [2022-11-20 19:49:43,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046927363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:43,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:43,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:49:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185455881] [2022-11-20 19:49:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:43,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:49:43,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:49:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:49:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=11, Unknown=2, NotChecked=0, Total=20 [2022-11-20 19:49:43,337 INFO L87 Difference]: Start difference. First operand 192 states and 266 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:48,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:49:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:48,175 INFO L93 Difference]: Finished difference Result 200 states and 273 transitions. [2022-11-20 19:49:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:49:48,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 19:49:48,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:48,296 INFO L225 Difference]: With dead ends: 200 [2022-11-20 19:49:48,296 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 19:49:48,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=11, Invalid=16, Unknown=3, NotChecked=0, Total=30 [2022-11-20 19:49:48,298 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 2 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:48,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 990 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 52 Unchecked, 2.6s Time] [2022-11-20 19:49:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 19:49:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-20 19:49:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.3850267379679144) internal successors, (259), 187 states have internal predecessors, (259), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:49:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 265 transitions. [2022-11-20 19:49:48,312 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 265 transitions. Word has length 16 [2022-11-20 19:49:48,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:48,312 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 265 transitions. [2022-11-20 19:49:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 265 transitions. [2022-11-20 19:49:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:49:48,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:48,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:48,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:48,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:48,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:49:48,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1270004023, now seen corresponding path program 1 times [2022-11-20 19:49:48,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:49:48,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824328427] [2022-11-20 19:49:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:48,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:49:48,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:49:48,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 19:49:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:48,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 19:49:48,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:49:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:50,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:49:50,812 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:49:50,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824328427] [2022-11-20 19:49:50,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824328427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:50,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:50,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:49:50,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431650590] [2022-11-20 19:49:50,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:50,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:49:50,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:49:50,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:49:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:49:50,815 INFO L87 Difference]: Start difference. First operand 192 states and 265 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:50,834 INFO L93 Difference]: Finished difference Result 200 states and 272 transitions. [2022-11-20 19:49:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:49:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 19:49:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:50,836 INFO L225 Difference]: With dead ends: 200 [2022-11-20 19:49:50,836 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 19:49:50,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:49:50,838 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:50,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1246 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-11-20 19:49:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 19:49:50,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-20 19:49:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.3796791443850267) internal successors, (258), 187 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:49:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 264 transitions. [2022-11-20 19:49:50,868 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 264 transitions. Word has length 18 [2022-11-20 19:49:50,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:50,869 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 264 transitions. [2022-11-20 19:49:50,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 264 transitions. [2022-11-20 19:49:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 19:49:50,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:50,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:50,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:51,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:51,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:49:51,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash 460657397, now seen corresponding path program 1 times [2022-11-20 19:49:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:49:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363534273] [2022-11-20 19:49:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:51,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:51,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:49:51,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:49:51,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 19:49:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:49:51,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 19:49:51,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:49:52,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 19:49:52,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 19:49:53,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:49:53,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-20 19:49:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:59,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:49:59,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:49:59,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363534273] [2022-11-20 19:49:59,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363534273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:49:59,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:49:59,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 19:49:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050217927] [2022-11-20 19:49:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:49:59,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 19:49:59,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:49:59,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 19:49:59,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2022-11-20 19:49:59,327 INFO L87 Difference]: Start difference. First operand 192 states and 264 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:59,351 INFO L93 Difference]: Finished difference Result 200 states and 271 transitions. [2022-11-20 19:49:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:49:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 19:49:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:59,353 INFO L225 Difference]: With dead ends: 200 [2022-11-20 19:49:59,353 INFO L226 Difference]: Without dead ends: 191 [2022-11-20 19:49:59,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2022-11-20 19:49:59,359 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 0 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:59,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1392 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 147 Unchecked, 0.0s Time] [2022-11-20 19:49:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-20 19:49:59,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-11-20 19:49:59,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.3763440860215055) internal successors, (256), 186 states have internal predecessors, (256), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:49:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 262 transitions. [2022-11-20 19:49:59,389 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 262 transitions. Word has length 18 [2022-11-20 19:49:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:59,392 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 262 transitions. [2022-11-20 19:49:59,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 262 transitions. [2022-11-20 19:49:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 19:49:59,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:49:59,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:49:59,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:59,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:49:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:49:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1405272886, now seen corresponding path program 1 times [2022-11-20 19:49:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:49:59,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612777797] [2022-11-20 19:49:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:49:59,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:49:59,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:49:59,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:49:59,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 19:50:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:00,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 19:50:00,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:50:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:02,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:50:02,290 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:50:02,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612777797] [2022-11-20 19:50:02,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612777797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:50:02,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:50:02,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:50:02,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550923028] [2022-11-20 19:50:02,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:50:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:50:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:50:02,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:50:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:50:02,292 INFO L87 Difference]: Start difference. First operand 191 states and 262 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:50:02,311 INFO L93 Difference]: Finished difference Result 213 states and 288 transitions. [2022-11-20 19:50:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:50:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-20 19:50:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:50:02,313 INFO L225 Difference]: With dead ends: 213 [2022-11-20 19:50:02,313 INFO L226 Difference]: Without dead ends: 205 [2022-11-20 19:50:02,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:50:02,315 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 107 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:50:02,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1109 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 42 Unchecked, 0.0s Time] [2022-11-20 19:50:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-20 19:50:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2022-11-20 19:50:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.3709677419354838) internal successors, (255), 186 states have internal predecessors, (255), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:50:02,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 261 transitions. [2022-11-20 19:50:02,328 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 261 transitions. Word has length 21 [2022-11-20 19:50:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:50:02,329 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 261 transitions. [2022-11-20 19:50:02,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 261 transitions. [2022-11-20 19:50:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 19:50:02,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:02,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:50:02,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:50:02,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:50:02,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:50:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1407556991, now seen corresponding path program 1 times [2022-11-20 19:50:02,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:50:02,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417155186] [2022-11-20 19:50:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:02,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:50:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:50:02,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:50:02,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 19:50:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:03,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 19:50:03,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:50:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:07,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:50:07,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:50:07,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417155186] [2022-11-20 19:50:07,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417155186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:50:07,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:50:07,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 19:50:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144105270] [2022-11-20 19:50:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:50:07,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 19:50:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:50:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 19:50:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 19:50:07,418 INFO L87 Difference]: Start difference. First operand 191 states and 261 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:10,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:13,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:15,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:17,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:21,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:24,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:27,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:29,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:31,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:34,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:36,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:38,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:41,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:44,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:47,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:51,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:53,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:50:58,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:00,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:03,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:05,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:07,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:09,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:11,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:14,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:16,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:18,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:20,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:22,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:24,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:26,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:28,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:30,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:32,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:35,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:37,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:40,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:42,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:48,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:50,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:51,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:54,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:56,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:51:58,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:00,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:03,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:05,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:07,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:09,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:12,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:14,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:14,064 INFO L93 Difference]: Finished difference Result 214 states and 288 transitions. [2022-11-20 19:52:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:52:14,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 19:52:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:14,106 INFO L225 Difference]: With dead ends: 214 [2022-11-20 19:52:14,106 INFO L226 Difference]: Without dead ends: 206 [2022-11-20 19:52:14,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:52:14,107 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 286 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 124.8s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:14,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1660 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 42 Unknown, 53 Unchecked, 124.8s Time] [2022-11-20 19:52:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-20 19:52:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 191. [2022-11-20 19:52:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 186 states have internal predecessors, (253), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:52:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 259 transitions. [2022-11-20 19:52:14,119 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 259 transitions. Word has length 22 [2022-11-20 19:52:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:14,119 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 259 transitions. [2022-11-20 19:52:14,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 259 transitions. [2022-11-20 19:52:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 19:52:14,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:14,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:52:14,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-20 19:52:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:14,337 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:52:14,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:14,338 INFO L85 PathProgramCache]: Analyzing trace with hash -955048095, now seen corresponding path program 1 times [2022-11-20 19:52:14,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:52:14,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111437678] [2022-11-20 19:52:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:14,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:52:14,340 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:52:14,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 19:52:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:52:15,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:52:15,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:52:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:18,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:52:18,007 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:52:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111437678] [2022-11-20 19:52:18,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111437678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:52:18,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:52:18,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:52:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093417357] [2022-11-20 19:52:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:52:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:52:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:52:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:52:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:52:18,009 INFO L87 Difference]: Start difference. First operand 191 states and 259 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:20,259 INFO L93 Difference]: Finished difference Result 310 states and 410 transitions. [2022-11-20 19:52:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:52:20,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 19:52:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:20,262 INFO L225 Difference]: With dead ends: 310 [2022-11-20 19:52:20,262 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 19:52:20,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:52:20,263 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 151 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:20,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 728 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-20 19:52:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 19:52:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 190. [2022-11-20 19:52:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.3567567567567567) internal successors, (251), 185 states have internal predecessors, (251), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:52:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 257 transitions. [2022-11-20 19:52:20,276 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 257 transitions. Word has length 22 [2022-11-20 19:52:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:20,277 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 257 transitions. [2022-11-20 19:52:20,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 257 transitions. [2022-11-20 19:52:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 19:52:20,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:20,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:52:20,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-20 19:52:20,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:20,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:52:20,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2049555245, now seen corresponding path program 1 times [2022-11-20 19:52:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:52:20,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229444626] [2022-11-20 19:52:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:20,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:20,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:52:20,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:52:20,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 19:52:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:52:20,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 19:52:20,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:52:21,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-11-20 19:52:23,140 INFO L321 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2022-11-20 19:52:23,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 32 [2022-11-20 19:52:31,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 19:52:31,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2022-11-20 19:52:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:34,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:52:34,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:52:34,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229444626] [2022-11-20 19:52:34,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229444626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:52:34,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:52:34,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 19:52:34,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022273982] [2022-11-20 19:52:34,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:52:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 19:52:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:52:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 19:52:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:52:34,419 INFO L87 Difference]: Start difference. First operand 190 states and 257 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:34,453 INFO L93 Difference]: Finished difference Result 202 states and 271 transitions. [2022-11-20 19:52:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 19:52:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 19:52:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:34,455 INFO L225 Difference]: With dead ends: 202 [2022-11-20 19:52:34,455 INFO L226 Difference]: Without dead ends: 194 [2022-11-20 19:52:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-20 19:52:34,456 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 3 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:34,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2787 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 290 Unchecked, 0.0s Time] [2022-11-20 19:52:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-20 19:52:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-20 19:52:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 189 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:52:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 263 transitions. [2022-11-20 19:52:34,466 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 263 transitions. Word has length 22 [2022-11-20 19:52:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 263 transitions. [2022-11-20 19:52:34,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 263 transitions. [2022-11-20 19:52:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 19:52:34,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:34,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:52:34,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 19:52:34,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:34,685 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:52:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1240208619, now seen corresponding path program 1 times [2022-11-20 19:52:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:52:34,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560174927] [2022-11-20 19:52:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:34,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:34,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:52:34,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:52:34,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 19:52:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:52:34,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 19:52:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:52:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:37,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:52:37,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:52:37,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560174927] [2022-11-20 19:52:37,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560174927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:52:37,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:52:37,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 19:52:37,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687081156] [2022-11-20 19:52:37,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:52:37,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 19:52:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:52:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 19:52:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:52:37,477 INFO L87 Difference]: Start difference. First operand 194 states and 263 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:37,491 INFO L93 Difference]: Finished difference Result 216 states and 289 transitions. [2022-11-20 19:52:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 19:52:37,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 19:52:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:37,493 INFO L225 Difference]: With dead ends: 216 [2022-11-20 19:52:37,493 INFO L226 Difference]: Without dead ends: 206 [2022-11-20 19:52:37,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 19:52:37,494 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 103 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:37,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1116 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-20 19:52:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-20 19:52:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 192. [2022-11-20 19:52:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.3529411764705883) internal successors, (253), 187 states have internal predecessors, (253), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:52:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 259 transitions. [2022-11-20 19:52:37,505 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 259 transitions. Word has length 22 [2022-11-20 19:52:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:37,505 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 259 transitions. [2022-11-20 19:52:37,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 259 transitions. [2022-11-20 19:52:37,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 19:52:37,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:37,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:52:37,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 19:52:37,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:37,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:52:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1497349992, now seen corresponding path program 1 times [2022-11-20 19:52:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:52:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097997285] [2022-11-20 19:52:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:37,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:37,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:52:37,720 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:52:37,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 19:52:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:52:38,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:52:38,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:52:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:39,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:52:39,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:52:39,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097997285] [2022-11-20 19:52:39,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097997285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:52:39,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:52:39,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 19:52:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905671928] [2022-11-20 19:52:39,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:52:39,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 19:52:39,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:52:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 19:52:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:52:39,582 INFO L87 Difference]: Start difference. First operand 192 states and 259 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:52:39,595 INFO L93 Difference]: Finished difference Result 361 states and 485 transitions. [2022-11-20 19:52:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:52:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 19:52:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:52:39,596 INFO L225 Difference]: With dead ends: 361 [2022-11-20 19:52:39,596 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 19:52:39,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:52:39,598 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:52:39,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 927 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-11-20 19:52:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 19:52:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-20 19:52:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 177 states have internal predecessors, (234), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:52:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 240 transitions. [2022-11-20 19:52:39,608 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 240 transitions. Word has length 23 [2022-11-20 19:52:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:52:39,608 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 240 transitions. [2022-11-20 19:52:39,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 240 transitions. [2022-11-20 19:52:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 19:52:39,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:52:39,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:52:39,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 19:52:39,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:39,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:52:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:52:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash -746579278, now seen corresponding path program 1 times [2022-11-20 19:52:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:52:39,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188184618] [2022-11-20 19:52:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:52:39,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:52:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:52:39,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:52:39,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-20 19:52:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:52:40,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 19:52:40,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:52:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:52:47,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:52:47,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:52:47,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188184618] [2022-11-20 19:52:47,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188184618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:52:47,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:52:47,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 19:52:47,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100031595] [2022-11-20 19:52:47,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:52:47,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 19:52:47,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:52:47,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 19:52:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-20 19:52:47,219 INFO L87 Difference]: Start difference. First operand 182 states and 240 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:52:52,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:52:57,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:00,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:04,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:06,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:09,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:12,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:14,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:17,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:20,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:22,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:25,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:28,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:33,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:36,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:38,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:40,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:43,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:45,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:47,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:49,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:52,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:54,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:53:57,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:00,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:06,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:07,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:09,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:10,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:12,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:15,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:17,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:19,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:21,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:24,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 19:54:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:54:24,103 INFO L93 Difference]: Finished difference Result 204 states and 264 transitions. [2022-11-20 19:54:24,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 19:54:24,144 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 19:54:24,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:54:24,146 INFO L225 Difference]: With dead ends: 204 [2022-11-20 19:54:24,146 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 19:54:24,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-20 19:54:24,147 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 426 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 93.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:54:24,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1699 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 31 Unknown, 48 Unchecked, 93.3s Time] [2022-11-20 19:54:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 19:54:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 182. [2022-11-20 19:54:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.310734463276836) internal successors, (232), 177 states have internal predecessors, (232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 19:54:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 238 transitions. [2022-11-20 19:54:24,158 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 238 transitions. Word has length 28 [2022-11-20 19:54:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:54:24,158 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 238 transitions. [2022-11-20 19:54:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:54:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 238 transitions. [2022-11-20 19:54:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 19:54:24,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:54:24,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:54:24,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-20 19:54:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:54:24,377 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:54:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:54:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1332182141, now seen corresponding path program 1 times [2022-11-20 19:54:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:54:24,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243903250] [2022-11-20 19:54:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:54:24,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:54:24,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:54:24,379 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:54:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 19:54:24,706 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Exception during sending of exit command (exit): Broken pipe [2022-11-20 19:54:24,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 139 [2022-11-20 19:54:24,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:54:24,907 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-20 19:54:24,910 INFO L158 Benchmark]: Toolchain (without parser) took 361791.36ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 49.4MB in the beginning and 77.1MB in the end (delta: -27.7MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2022-11-20 19:54:24,910 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 50.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:54:24,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.60ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 49.2MB in the end (delta: 215.5kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-11-20 19:54:24,915 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.43ms. Allocated memory is still 75.5MB. Free memory was 49.2MB in the beginning and 44.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 19:54:24,915 INFO L158 Benchmark]: Boogie Preprocessor took 67.95ms. Allocated memory is still 75.5MB. Free memory was 44.6MB in the beginning and 39.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 19:54:24,916 INFO L158 Benchmark]: RCFGBuilder took 72946.92ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 39.6MB in the beginning and 60.7MB in the end (delta: -21.2MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-20 19:54:24,916 INFO L158 Benchmark]: TraceAbstraction took 288184.18ms. Allocated memory is still 107.0MB. Free memory was 60.3MB in the beginning and 77.1MB in the end (delta: -16.9MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-11-20 19:54:24,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 52.8MB in the end (delta: 50.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.60ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 49.2MB in the end (delta: 215.5kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.43ms. Allocated memory is still 75.5MB. Free memory was 49.2MB in the beginning and 44.6MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.95ms. Allocated memory is still 75.5MB. Free memory was 44.6MB in the beginning and 39.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 72946.92ms. Allocated memory was 75.5MB in the beginning and 107.0MB in the end (delta: 31.5MB). Free memory was 39.6MB in the beginning and 60.7MB in the end (delta: -21.2MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 288184.18ms. Allocated memory is still 107.0MB. Free memory was 60.3MB in the beginning and 77.1MB in the end (delta: -16.9MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 19:54:25,139 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 19:54:25,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77d4c66a-dd90-4ef9-a30b-7554140bca9f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13) with exit command (exit)) Received EOF on stdin. No stderr output.