./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 64bit --witnessprinter.graph.data.programhash 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- 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 18:56:48,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:56:48,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:56:48,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:56:48,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:56:48,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:56:48,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:56:48,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:56:48,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:56:48,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:56:48,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:56:48,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:56:48,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:56:48,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:56:48,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:56:48,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:56:48,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:56:48,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:56:48,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:56:48,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:56:48,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:56:48,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:56:48,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:56:48,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:56:48,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:56:48,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:56:48,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:56:48,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:56:48,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:56:48,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:56:48,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:56:48,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:56:48,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:56:48,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:56:48,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:56:48,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:56:48,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:56:48,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:56:48,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:56:48,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:56:48,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:56:48,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 18:56:48,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:56:48,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:56:48,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:56:48,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:56:48,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:56:48,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:56:48,843 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:56:48,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:56:48,844 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:56:48,844 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:56:48,846 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:56:48,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:56:48,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:56:48,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:56:48,847 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:56:48,848 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:56:48,848 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:56:48,848 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:56:48,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:56:48,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:56:48,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:56:48,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:56:48,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:56:48,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:56:48,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:56:48,852 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:56:48,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:56:48,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:56:48,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:56:48,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:56:48,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:56:48,855 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:56:48,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:56:48,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:56:48,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:56:48,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:56:48,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:56:48,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:56:48,858 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_947056dd-815f-4e60-bb09-85f6d6e7e249/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2022-11-20 18:56:49,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:56:49,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:56:49,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:56:49,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:56:49,244 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:56:49,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2022-11-20 18:56:52,979 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:56:53,618 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:56:53,619 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2022-11-20 18:56:53,681 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data/97b1c1775/004350743d1346f7a9834067861a25ee/FLAG18221c532 [2022-11-20 18:56:53,699 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data/97b1c1775/004350743d1346f7a9834067861a25ee [2022-11-20 18:56:53,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:56:53,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:56:53,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:56:53,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:56:53,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:56:53,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:56:53" (1/1) ... [2022-11-20 18:56:53,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f482b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:56:53, skipping insertion in model container [2022-11-20 18:56:53,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:56:53" (1/1) ... [2022-11-20 18:56:53,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:56:53,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:56:54,793 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:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) 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.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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: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 18:56:54,805 INFO L158 Benchmark]: Toolchain (without parser) took 1096.57ms. Allocated memory is still 157.3MB. Free memory was 107.0MB in the beginning and 104.7MB in the end (delta: 2.3MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-11-20 18:56:54,806 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:56:54,807 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1089.98ms. Allocated memory is still 157.3MB. Free memory was 106.5MB in the beginning and 104.7MB in the end (delta: 1.8MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-11-20 18:56:54,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory is still 84.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1089.98ms. Allocated memory is still 157.3MB. Free memory was 106.5MB in the beginning and 104.7MB in the end (delta: 1.8MB). Peak memory consumption was 58.5MB. 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_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 64bit --witnessprinter.graph.data.programhash 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- 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 18:56:57,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:56:57,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:56:57,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:56:57,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:56:57,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:56:57,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:56:57,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:56:57,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:56:57,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:56:57,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:56:57,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:56:57,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:56:57,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:56:57,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:56:57,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:56:57,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:56:57,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:56:57,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:56:57,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:56:57,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:56:57,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:56:57,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:56:57,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:56:57,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:56:57,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:56:57,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:56:57,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:56:57,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:56:57,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:56:57,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:56:57,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:56:57,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:56:57,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:56:57,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:56:57,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:56:57,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:56:57,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:56:57,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:56:57,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:56:57,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:56:57,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 18:56:57,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:56:57,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:56:57,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:56:57,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:56:57,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:56:57,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:56:57,620 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:56:57,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:56:57,620 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:56:57,620 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:56:57,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:56:57,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:56:57,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:56:57,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:56:57,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:56:57,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:56:57,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:56:57,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 18:56:57,624 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 18:56:57,624 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 18:56:57,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:56:57,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:56:57,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:56:57,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:56:57,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 18:56:57,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:56:57,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:56:57,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:56:57,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:56:57,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:56:57,627 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 18:56:57,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 18:56:57,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:56:57,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:56:57,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 18:56:57,628 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_947056dd-815f-4e60-bb09-85f6d6e7e249/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2022-11-20 18:56:58,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:56:58,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:56:58,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:56:58,156 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:56:58,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:56:58,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2022-11-20 18:57:01,876 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:57:02,501 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:57:02,502 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2022-11-20 18:57:02,558 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data/2e1b08b1a/0fc93486183743efb4f86578c821ebc0/FLAG0e2e4079b [2022-11-20 18:57:02,587 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/data/2e1b08b1a/0fc93486183743efb4f86578c821ebc0 [2022-11-20 18:57:02,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:57:02,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:57:02,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:02,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:57:02,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:57:02,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:02" (1/1) ... [2022-11-20 18:57:02,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c8c48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:02, skipping insertion in model container [2022-11-20 18:57:02,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:02" (1/1) ... [2022-11-20 18:57:02,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:57:02,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:57:05,177 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_947056dd-815f-4e60-bb09-85f6d6e7e249/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2022-11-20 18:57:05,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:05,297 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 18:57:05,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:57:05,822 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_947056dd-815f-4e60-bb09-85f6d6e7e249/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2022-11-20 18:57:05,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:05,888 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:57:06,318 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_947056dd-815f-4e60-bb09-85f6d6e7e249/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2022-11-20 18:57:06,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:57:06,614 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:57:06,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06 WrapperNode [2022-11-20 18:57:06,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:57:06,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:06,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:57:06,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:57:06,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:06,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:06,876 INFO L138 Inliner]: procedures = 277, calls = 1355, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3200 [2022-11-20 18:57:06,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:57:06,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:57:06,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:57:06,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:57:06,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:06,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,208 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:57:07,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:57:07,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:57:07,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:57:07,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (1/1) ... [2022-11-20 18:57:07,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:57:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:57:07,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:57:07,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:57:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2022-11-20 18:57:07,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2022-11-20 18:57:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 18:57:07,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 18:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-20 18:57:07,380 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-20 18:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 18:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 18:57:07,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 18:57:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 18:57:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 18:57:07,381 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 18:57:07,381 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2022-11-20 18:57:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2022-11-20 18:57:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 18:57:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 18:57:07,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 18:57:07,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 18:57:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2022-11-20 18:57:07,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2022-11-20 18:57:07,383 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 18:57:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 18:57:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 18:57:07,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 18:57:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 18:57:07,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 18:57:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 18:57:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 18:57:07,386 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2022-11-20 18:57:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2022-11-20 18:57:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 18:57:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 18:57:07,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 18:57:07,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 18:57:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-20 18:57:07,388 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-20 18:57:07,388 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 18:57:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 18:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-20 18:57:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-20 18:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 18:57:07,389 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 18:57:07,389 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-20 18:57:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-20 18:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2022-11-20 18:57:07,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2022-11-20 18:57:07,390 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-20 18:57:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-20 18:57:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 18:57:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 18:57:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-20 18:57:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-20 18:57:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 18:57:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 18:57:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 18:57:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 18:57:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2022-11-20 18:57:07,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2022-11-20 18:57:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2022-11-20 18:57:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2022-11-20 18:57:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-11-20 18:57:07,396 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-11-20 18:57:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 18:57:07,396 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 18:57:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 18:57:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-20 18:57:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-20 18:57:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2022-11-20 18:57:07,397 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2022-11-20 18:57:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 18:57:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-20 18:57:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-20 18:57:07,399 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 18:57:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 18:57:07,400 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-20 18:57:07,401 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-20 18:57:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 18:57:07,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 18:57:07,401 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2022-11-20 18:57:07,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2022-11-20 18:57:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 18:57:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 18:57:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 18:57:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2022-11-20 18:57:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2022-11-20 18:57:07,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 18:57:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 18:57:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 18:57:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 18:57:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 18:57:07,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-20 18:57:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 18:57:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 18:57:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 18:57:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2022-11-20 18:57:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2022-11-20 18:57:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 18:57:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 18:57:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 18:57:07,406 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 18:57:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 18:57:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 18:57:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-20 18:57:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-20 18:57:07,407 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 18:57:07,407 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 18:57:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2022-11-20 18:57:07,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2022-11-20 18:57:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2022-11-20 18:57:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2022-11-20 18:57:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2022-11-20 18:57:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2022-11-20 18:57:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2022-11-20 18:57:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2022-11-20 18:57:07,415 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-20 18:57:07,416 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-20 18:57:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 18:57:07,418 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 18:57:07,418 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 18:57:07,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 18:57:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 18:57:07,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 18:57:07,423 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 18:57:07,424 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 18:57:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-20 18:57:07,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-20 18:57:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-20 18:57:07,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-20 18:57:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 18:57:07,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 18:57:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 18:57:07,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 18:57:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-20 18:57:07,425 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-20 18:57:07,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 18:57:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 18:57:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 18:57:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 18:57:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-20 18:57:07,426 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-20 18:57:07,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 18:57:07,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 18:57:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2022-11-20 18:57:07,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2022-11-20 18:57:07,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 18:57:07,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 18:57:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2022-11-20 18:57:07,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2022-11-20 18:57:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 18:57:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2022-11-20 18:57:07,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2022-11-20 18:57:07,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 18:57:07,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 18:57:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2022-11-20 18:57:07,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2022-11-20 18:57:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 18:57:07,429 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 18:57:07,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 18:57:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 18:57:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 18:57:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 18:57:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 18:57:07,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 18:57:07,430 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-20 18:57:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-20 18:57:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 18:57:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2022-11-20 18:57:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2022-11-20 18:57:07,431 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-20 18:57:07,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-20 18:57:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2022-11-20 18:57:07,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2022-11-20 18:57:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 18:57:07,432 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 18:57:07,432 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-20 18:57:07,432 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-20 18:57:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2022-11-20 18:57:07,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2022-11-20 18:57:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-20 18:57:07,433 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-20 18:57:07,433 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2022-11-20 18:57:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2022-11-20 18:57:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-20 18:57:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-20 18:57:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2022-11-20 18:57:07,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2022-11-20 18:57:07,434 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 18:57:07,435 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 18:57:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 18:57:07,435 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2022-11-20 18:57:07,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2022-11-20 18:57:07,437 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2022-11-20 18:57:07,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2022-11-20 18:57:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-20 18:57:07,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-20 18:57:07,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:57:07,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:57:08,504 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:57:08,515 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:57:15,823 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 18:57:53,661 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:57:53,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:57:53,696 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 18:57:53,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:53 BoogieIcfgContainer [2022-11-20 18:57:53,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:57:53,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:57:53,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:57:53,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:57:53,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:02" (1/3) ... [2022-11-20 18:57:53,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ef760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:53, skipping insertion in model container [2022-11-20 18:57:53,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:06" (2/3) ... [2022-11-20 18:57:53,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ef760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:53, skipping insertion in model container [2022-11-20 18:57:53,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:53" (3/3) ... [2022-11-20 18:57:53,716 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2022-11-20 18:57:53,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:57:53,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 18:57:53,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:57:53,873 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;@78bc91ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:57:53,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 18:57:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 1380 states, 934 states have (on average 1.2944325481798715) internal successors, (1209), 967 states have internal predecessors, (1209), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2022-11-20 18:57:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 18:57:53,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:53,934 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:53,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash 866419922, now seen corresponding path program 1 times [2022-11-20 18:57:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:57:53,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037105556] [2022-11-20 18:57:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:53,966 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 18:57:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:57:53,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:53,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:55,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 18:57:55,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:57:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 18:57:55,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:57:55,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:57:55,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037105556] [2022-11-20 18:57:55,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037105556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:55,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:55,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 18:57:55,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412374709] [2022-11-20 18:57:55,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:55,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 18:57:55,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:57:55,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 18:57:55,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 18:57:55,701 INFO L87 Difference]: Start difference. First operand has 1380 states, 934 states have (on average 1.2944325481798715) internal successors, (1209), 967 states have internal predecessors, (1209), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 18:57:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:55,945 INFO L93 Difference]: Finished difference Result 2749 states and 3890 transitions. [2022-11-20 18:57:55,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 18:57:55,948 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2022-11-20 18:57:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:55,983 INFO L225 Difference]: With dead ends: 2749 [2022-11-20 18:57:55,984 INFO L226 Difference]: Without dead ends: 1353 [2022-11-20 18:57:56,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 120 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 18:57:56,011 INFO L413 NwaCegarLoop]: 1913 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, 1913 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 18:57:56,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 18:57:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-11-20 18:57:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1353. [2022-11-20 18:57:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 917 states have (on average 1.282442748091603) internal successors, (1176), 939 states have internal predecessors, (1176), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2022-11-20 18:57:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1883 transitions. [2022-11-20 18:57:56,186 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1883 transitions. Word has length 121 [2022-11-20 18:57:56,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:56,187 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1883 transitions. [2022-11-20 18:57:56,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 18:57:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1883 transitions. [2022-11-20 18:57:56,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 18:57:56,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:56,195 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:56,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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)] Forceful destruction successful, exit code 0 [2022-11-20 18:57:56,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:56,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:56,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1365599798, now seen corresponding path program 1 times [2022-11-20 18:57:56,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:57:56,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22578219] [2022-11-20 18:57:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:56,425 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 18:57:56,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:57:56,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:56,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:57:58,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1282 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 18:57:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:57:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-20 18:57:58,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:57:58,388 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:57:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22578219] [2022-11-20 18:57:58,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22578219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:57:58,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:57:58,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 18:57:58,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590930717] [2022-11-20 18:57:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:57:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 18:57:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:57:58,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 18:57:58,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 18:57:58,393 INFO L87 Difference]: Start difference. First operand 1353 states and 1883 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 18:57:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:57:58,715 INFO L93 Difference]: Finished difference Result 2698 states and 3755 transitions. [2022-11-20 18:57:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 18:57:58,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2022-11-20 18:57:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:57:58,817 INFO L225 Difference]: With dead ends: 2698 [2022-11-20 18:57:58,818 INFO L226 Difference]: Without dead ends: 1354 [2022-11-20 18:57:58,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 18:57:58,825 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 3 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5638 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:57:58,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5638 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:57:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-11-20 18:57:58,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1354. [2022-11-20 18:57:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 918 states have (on average 1.2821350762527233) internal successors, (1177), 940 states have internal predecessors, (1177), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2022-11-20 18:57:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 1884 transitions. [2022-11-20 18:57:58,892 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 1884 transitions. Word has length 121 [2022-11-20 18:57:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:57:58,894 INFO L495 AbstractCegarLoop]: Abstraction has 1354 states and 1884 transitions. [2022-11-20 18:57:58,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 18:57:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 1884 transitions. [2022-11-20 18:57:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 18:57:58,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:57:58,899 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:57:58,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:59,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:59,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:57:59,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:57:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash -482689842, now seen corresponding path program 1 times [2022-11-20 18:57:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:57:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512015304] [2022-11-20 18:57:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:57:59,129 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 18:57:59,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:57:59,130 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:57:59,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:00,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:58:00,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 18:58:00,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 18:58:01,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512015304] [2022-11-20 18:58:01,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512015304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [45540450] [2022-11-20 18:58:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:01,586 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:01,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:01,616 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:01,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-20 18:58:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:02,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 18:58:02,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:58:04,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:04,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [45540450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:04,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 18:58:04,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 9 [2022-11-20 18:58:04,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124971732] [2022-11-20 18:58:04,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:04,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 18:58:04,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:04,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 18:58:04,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 18:58:04,386 INFO L87 Difference]: Start difference. First operand 1354 states and 1884 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 18:58:04,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:04,576 INFO L93 Difference]: Finished difference Result 1697 states and 2323 transitions. [2022-11-20 18:58:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 18:58:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 124 [2022-11-20 18:58:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:04,591 INFO L225 Difference]: With dead ends: 1697 [2022-11-20 18:58:04,591 INFO L226 Difference]: Without dead ends: 1694 [2022-11-20 18:58:04,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-20 18:58:04,596 INFO L413 NwaCegarLoop]: 2116 mSDtfsCounter, 1363 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:04,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 2995 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 18:58:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-11-20 18:58:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1694. [2022-11-20 18:58:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1131 states have (on average 1.2634836427939877) internal successors, (1429), 1154 states have internal predecessors, (1429), 446 states have call successors, (446), 117 states have call predecessors, (446), 116 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2022-11-20 18:58:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2320 transitions. [2022-11-20 18:58:04,729 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2320 transitions. Word has length 124 [2022-11-20 18:58:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:04,733 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2320 transitions. [2022-11-20 18:58:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 18:58:04,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2320 transitions. [2022-11-20 18:58:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-20 18:58:04,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:04,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:04,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:04,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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)] Ended with exit code 0 [2022-11-20 18:58:05,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:05,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash 457413512, now seen corresponding path program 1 times [2022-11-20 18:58:05,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:05,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845133505] [2022-11-20 18:58:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:05,157 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 18:58:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:05,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:06,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:58:06,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 18:58:06,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 18:58:07,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:07,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845133505] [2022-11-20 18:58:07,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845133505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:07,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1114420954] [2022-11-20 18:58:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:07,326 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:07,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:07,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:07,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-20 18:58:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:08,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 18:58:08,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:58:09,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:09,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1114420954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:09,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 18:58:09,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 11 [2022-11-20 18:58:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086052718] [2022-11-20 18:58:09,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:09,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:58:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:58:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 18:58:09,872 INFO L87 Difference]: Start difference. First operand 1694 states and 2320 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:10,665 INFO L93 Difference]: Finished difference Result 5045 states and 6936 transitions. [2022-11-20 18:58:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:58:10,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-11-20 18:58:10,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:10,688 INFO L225 Difference]: With dead ends: 5045 [2022-11-20 18:58:10,688 INFO L226 Difference]: Without dead ends: 3373 [2022-11-20 18:58:10,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 18:58:10,698 INFO L413 NwaCegarLoop]: 2397 mSDtfsCounter, 1848 mSDsluCounter, 6638 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 9035 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:10,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 9035 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 18:58:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2022-11-20 18:58:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3360. [2022-11-20 18:58:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 2242 states have (on average 1.263157894736842) internal successors, (2832), 2292 states have internal predecessors, (2832), 885 states have call successors, (885), 233 states have call predecessors, (885), 232 states have return successors, (896), 880 states have call predecessors, (896), 884 states have call successors, (896) [2022-11-20 18:58:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 4613 transitions. [2022-11-20 18:58:10,878 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 4613 transitions. Word has length 155 [2022-11-20 18:58:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:10,879 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 4613 transitions. [2022-11-20 18:58:10,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 4613 transitions. [2022-11-20 18:58:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 18:58:10,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:10,890 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:10,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:11,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:11,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:11,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:11,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:11,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1420912775, now seen corresponding path program 1 times [2022-11-20 18:58:11,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:11,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787888356] [2022-11-20 18:58:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:11,305 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 18:58:11,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:11,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:11,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:12,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:58:12,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 18:58:12,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 18:58:13,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:13,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787888356] [2022-11-20 18:58:13,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787888356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:13,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1016531762] [2022-11-20 18:58:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:13,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:13,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:13,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-20 18:58:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:14,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 18:58:14,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:58:15,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:15,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1016531762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:15,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 18:58:15,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 11 [2022-11-20 18:58:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911301814] [2022-11-20 18:58:15,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:15,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:58:15,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:58:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 18:58:15,846 INFO L87 Difference]: Start difference. First operand 3360 states and 4613 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:16,729 INFO L93 Difference]: Finished difference Result 10056 states and 13873 transitions. [2022-11-20 18:58:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:58:16,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 156 [2022-11-20 18:58:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:16,767 INFO L225 Difference]: With dead ends: 10056 [2022-11-20 18:58:16,767 INFO L226 Difference]: Without dead ends: 6718 [2022-11-20 18:58:16,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 18:58:16,784 INFO L413 NwaCegarLoop]: 2349 mSDtfsCounter, 1847 mSDsluCounter, 6540 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:16,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 8889 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 18:58:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6718 states. [2022-11-20 18:58:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6718 to 6697. [2022-11-20 18:58:17,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6697 states, 4470 states have (on average 1.2626398210290828) internal successors, (5644), 4569 states have internal predecessors, (5644), 1762 states have call successors, (1762), 465 states have call predecessors, (1762), 464 states have return successors, (1815), 1754 states have call predecessors, (1815), 1761 states have call successors, (1815) [2022-11-20 18:58:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6697 states to 6697 states and 9221 transitions. [2022-11-20 18:58:17,253 INFO L78 Accepts]: Start accepts. Automaton has 6697 states and 9221 transitions. Word has length 156 [2022-11-20 18:58:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:17,254 INFO L495 AbstractCegarLoop]: Abstraction has 6697 states and 9221 transitions. [2022-11-20 18:58:17,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6697 states and 9221 transitions. [2022-11-20 18:58:17,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-20 18:58:17,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:17,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:17,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:17,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:17,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1747234411, now seen corresponding path program 1 times [2022-11-20 18:58:17,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:17,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316206300] [2022-11-20 18:58:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:17,679 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 18:58:17,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:17,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:17,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:18,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:58:18,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 18:58:19,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 18:58:19,822 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:19,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316206300] [2022-11-20 18:58:19,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [316206300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:19,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1188169286] [2022-11-20 18:58:19,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:19,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:19,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:19,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-20 18:58:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:21,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 18:58:21,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:58:22,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:22,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1188169286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:22,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 18:58:22,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 11 [2022-11-20 18:58:22,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911915053] [2022-11-20 18:58:22,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:22,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:58:22,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:58:22,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 18:58:22,271 INFO L87 Difference]: Start difference. First operand 6697 states and 9221 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:23,439 INFO L93 Difference]: Finished difference Result 20090 states and 27811 transitions. [2022-11-20 18:58:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:58:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2022-11-20 18:58:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:23,547 INFO L225 Difference]: With dead ends: 20090 [2022-11-20 18:58:23,548 INFO L226 Difference]: Without dead ends: 13415 [2022-11-20 18:58:23,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 18:58:23,582 INFO L413 NwaCegarLoop]: 2235 mSDtfsCounter, 1848 mSDsluCounter, 6312 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:23,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 8547 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 18:58:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13415 states. [2022-11-20 18:58:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13415 to 13376. [2022-11-20 18:58:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13376 states, 8931 states have (on average 1.262120703168738) internal successors, (11272), 9127 states have internal predecessors, (11272), 3515 states have call successors, (3515), 930 states have call predecessors, (3515), 929 states have return successors, (3690), 3502 states have call predecessors, (3690), 3514 states have call successors, (3690) [2022-11-20 18:58:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 18477 transitions. [2022-11-20 18:58:24,652 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 18477 transitions. Word has length 157 [2022-11-20 18:58:24,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:24,653 INFO L495 AbstractCegarLoop]: Abstraction has 13376 states and 18477 transitions. [2022-11-20 18:58:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 18477 transitions. [2022-11-20 18:58:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-20 18:58:24,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:24,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:24,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:24,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:25,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:25,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -499081206, now seen corresponding path program 1 times [2022-11-20 18:58:25,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:25,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300783993] [2022-11-20 18:58:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:25,090 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 18:58:25,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:25,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:25,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:26,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:58:26,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 18:58:26,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 18:58:27,211 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300783993] [2022-11-20 18:58:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300783993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926346120] [2022-11-20 18:58:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:27,212 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:27,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:27,213 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:27,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-20 18:58:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:28,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 18:58:28,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:58:29,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 18:58:29,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926346120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:58:29,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 18:58:29,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 11 [2022-11-20 18:58:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135813917] [2022-11-20 18:58:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:29,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 18:58:29,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 18:58:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-20 18:58:29,777 INFO L87 Difference]: Start difference. First operand 13376 states and 18477 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:58:31,902 INFO L93 Difference]: Finished difference Result 39636 states and 55066 transitions. [2022-11-20 18:58:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 18:58:31,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 158 [2022-11-20 18:58:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:58:32,085 INFO L225 Difference]: With dead ends: 39636 [2022-11-20 18:58:32,085 INFO L226 Difference]: Without dead ends: 26282 [2022-11-20 18:58:32,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 18:58:32,147 INFO L413 NwaCegarLoop]: 2235 mSDtfsCounter, 1849 mSDsluCounter, 6312 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 18:58:32,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 8547 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 18:58:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26282 states. [2022-11-20 18:58:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26282 to 26210. [2022-11-20 18:58:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26210 states, 17498 states have (on average 1.260886958509544) internal successors, (22063), 17873 states have internal predecessors, (22063), 6882 states have call successors, (6882), 1830 states have call predecessors, (6882), 1829 states have return successors, (7383), 6861 states have call predecessors, (7383), 6881 states have call successors, (7383) [2022-11-20 18:58:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26210 states to 26210 states and 36328 transitions. [2022-11-20 18:58:34,103 INFO L78 Accepts]: Start accepts. Automaton has 26210 states and 36328 transitions. Word has length 158 [2022-11-20 18:58:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:58:34,104 INFO L495 AbstractCegarLoop]: Abstraction has 26210 states and 36328 transitions. [2022-11-20 18:58:34,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 18:58:34,104 INFO L276 IsEmpty]: Start isEmpty. Operand 26210 states and 36328 transitions. [2022-11-20 18:58:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 18:58:34,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:58:34,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:58:34,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:34,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-20 18:58:34,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:34,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:58:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:58:34,537 INFO L85 PathProgramCache]: Analyzing trace with hash -661002386, now seen corresponding path program 1 times [2022-11-20 18:58:34,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:58:34,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456191523] [2022-11-20 18:58:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:34,539 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 18:58:34,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:58:34,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:58:34,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (14)] Waiting until timeout for monitored process [2022-11-20 18:58:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:35,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:58:35,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 18:58:36,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-20 18:58:36,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:58:36,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456191523] [2022-11-20 18:58:36,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456191523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:58:36,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1998125276] [2022-11-20 18:58:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:58:36,786 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:58:36,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:58:36,788 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:58:36,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-20 18:58:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:58:38,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 18:58:38,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:58:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-20 18:58:39,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:58:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-20 18:58:41,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1998125276] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 18:58:41,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:58:41,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 7] total 16 [2022-11-20 18:58:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607461486] [2022-11-20 18:58:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:58:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 18:58:41,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:58:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 18:58:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-20 18:58:41,021 INFO L87 Difference]: Start difference. First operand 26210 states and 36328 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 18:59:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:59:00,825 INFO L93 Difference]: Finished difference Result 65698 states and 91439 transitions. [2022-11-20 18:59:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 18:59:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 168 [2022-11-20 18:59:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:59:01,018 INFO L225 Difference]: With dead ends: 65698 [2022-11-20 18:59:01,018 INFO L226 Difference]: Without dead ends: 39510 [2022-11-20 18:59:01,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2022-11-20 18:59:01,104 INFO L413 NwaCegarLoop]: 2919 mSDtfsCounter, 2308 mSDsluCounter, 13589 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 16508 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-20 18:59:01,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2315 Valid, 16508 Invalid, 2587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [376 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2022-11-20 18:59:01,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39510 states. [2022-11-20 18:59:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39510 to 39169. [2022-11-20 18:59:03,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39169 states, 26144 states have (on average 1.2610159118727051) internal successors, (32968), 26701 states have internal predecessors, (32968), 10300 states have call successors, (10300), 2718 states have call predecessors, (10300), 2724 states have return successors, (11107), 10275 states have call predecessors, (11107), 10299 states have call successors, (11107) [2022-11-20 18:59:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39169 states to 39169 states and 54375 transitions. [2022-11-20 18:59:04,073 INFO L78 Accepts]: Start accepts. Automaton has 39169 states and 54375 transitions. Word has length 168 [2022-11-20 18:59:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:59:04,074 INFO L495 AbstractCegarLoop]: Abstraction has 39169 states and 54375 transitions. [2022-11-20 18:59:04,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 18:59:04,074 INFO L276 IsEmpty]: Start isEmpty. Operand 39169 states and 54375 transitions. [2022-11-20 18:59:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 18:59:04,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:59:04,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 18:59:04,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-20 18:59:04,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (14)] Forceful destruction successful, exit code 0 [2022-11-20 18:59:04,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:59:04,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 18:59:04,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:59:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1701162004, now seen corresponding path program 1 times [2022-11-20 18:59:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 18:59:04,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231645709] [2022-11-20 18:59:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:04,505 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 18:59:04,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 18:59:04,508 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 18:59:04,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (16)] Waiting until timeout for monitored process [2022-11-20 18:59:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:05,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 18:59:05,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-20 18:59:06,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:59:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-20 18:59:06,707 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 18:59:06,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231645709] [2022-11-20 18:59:06,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231645709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:59:06,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [522935802] [2022-11-20 18:59:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:06,708 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 18:59:06,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 18:59:06,709 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 18:59:06,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-20 18:59:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:07,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 18:59:07,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:59:09,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:59:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:59:10,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [522935802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:59:10,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857418132] [2022-11-20 18:59:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:59:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:59:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:59:10,855 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:59:10,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 18:59:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:59:12,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1436 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 18:59:12,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:59:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:59:13,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:59:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-11-20 18:59:13,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857418132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:59:13,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 18:59:13,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8, 9, 8, 9] total 17 [2022-11-20 18:59:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525664301] [2022-11-20 18:59:13,940 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 18:59:13,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 18:59:13,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 18:59:13,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 18:59:13,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-20 18:59:13,942 INFO L87 Difference]: Start difference. First operand 39169 states and 54375 transitions. Second operand has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 15 states have internal predecessors, (156), 4 states have call successors, (49), 4 states have call predecessors, (49), 7 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-20 19:00:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:00:12,234 INFO L93 Difference]: Finished difference Result 84869 states and 117886 transitions. [2022-11-20 19:00:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 19:00:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 15 states have internal predecessors, (156), 4 states have call successors, (49), 4 states have call predecessors, (49), 7 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 169 [2022-11-20 19:00:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:00:12,512 INFO L225 Difference]: With dead ends: 84869 [2022-11-20 19:00:12,512 INFO L226 Difference]: Without dead ends: 45706 [2022-11-20 19:00:12,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 999 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=319, Invalid=1751, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 19:00:12,704 INFO L413 NwaCegarLoop]: 3995 mSDtfsCounter, 5952 mSDsluCounter, 36230 mSDsCounter, 0 mSdLazyCounter, 7073 mSolverCounterSat, 1899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5966 SdHoareTripleChecker+Valid, 40225 SdHoareTripleChecker+Invalid, 8972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1899 IncrementalHoareTripleChecker+Valid, 7073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:00:12,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5966 Valid, 40225 Invalid, 8972 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1899 Valid, 7073 Invalid, 0 Unknown, 0 Unchecked, 50.4s Time] [2022-11-20 19:00:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45706 states. [2022-11-20 19:00:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45706 to 45423. [2022-11-20 19:00:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45423 states, 30315 states have (on average 1.2606300511298036) internal successors, (38216), 30963 states have internal predecessors, (38216), 11947 states have call successors, (11947), 3150 states have call predecessors, (11947), 3160 states have return successors, (12872), 11914 states have call predecessors, (12872), 11946 states have call successors, (12872) [2022-11-20 19:00:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45423 states to 45423 states and 63035 transitions. [2022-11-20 19:00:15,426 INFO L78 Accepts]: Start accepts. Automaton has 45423 states and 63035 transitions. Word has length 169 [2022-11-20 19:00:15,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:00:15,426 INFO L495 AbstractCegarLoop]: Abstraction has 45423 states and 63035 transitions. [2022-11-20 19:00:15,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.176470588235293) internal successors, (156), 15 states have internal predecessors, (156), 4 states have call successors, (49), 4 states have call predecessors, (49), 7 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-20 19:00:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45423 states and 63035 transitions. [2022-11-20 19:00:15,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-20 19:00:15,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:00:15,441 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:00:15,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 19:00:15,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-20 19:00:15,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (16)] Forceful destruction successful, exit code 0 [2022-11-20 19:00:16,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 19:00:16,068 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:00:16,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:00:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -626418723, now seen corresponding path program 1 times [2022-11-20 19:00:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:00:16,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455212769] [2022-11-20 19:00:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:16,070 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 19:00:16,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:00:16,071 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 19:00:16,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (19)] Waiting until timeout for monitored process [2022-11-20 19:00:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:17,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:00:17,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:00:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:00:19,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:00:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:00:20,254 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:00:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455212769] [2022-11-20 19:00:20,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455212769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:00:20,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [452804800] [2022-11-20 19:00:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:20,254 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:00:20,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:00:20,256 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:00:20,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-20 19:00:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:21,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:00:21,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:00:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:00:22,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:00:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:00:23,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [452804800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:00:23,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072910418] [2022-11-20 19:00:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:00:23,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:00:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:00:23,542 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:00:23,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 19:00:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:00:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:00:24,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:00:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:00:26,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:00:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:00:26,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072910418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:00:26,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:00:26,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 8, 9] total 11 [2022-11-20 19:00:26,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201668703] [2022-11-20 19:00:26,959 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:00:26,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 19:00:26,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:00:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 19:00:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:00:26,961 INFO L87 Difference]: Start difference. First operand 45423 states and 63035 transitions. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 19:01:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:01:17,612 INFO L93 Difference]: Finished difference Result 97267 states and 135045 transitions. [2022-11-20 19:01:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 19:01:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 176 [2022-11-20 19:01:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:01:17,848 INFO L225 Difference]: With dead ends: 97267 [2022-11-20 19:01:17,848 INFO L226 Difference]: Without dead ends: 51869 [2022-11-20 19:01:17,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1043 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 19:01:17,989 INFO L413 NwaCegarLoop]: 3538 mSDtfsCounter, 5940 mSDsluCounter, 24233 mSDsCounter, 0 mSdLazyCounter, 6622 mSolverCounterSat, 1903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5954 SdHoareTripleChecker+Valid, 27771 SdHoareTripleChecker+Invalid, 8525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1903 IncrementalHoareTripleChecker+Valid, 6622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:01:17,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5954 Valid, 27771 Invalid, 8525 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1903 Valid, 6622 Invalid, 0 Unknown, 0 Unchecked, 45.1s Time] [2022-11-20 19:01:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51869 states. [2022-11-20 19:01:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51869 to 51602. [2022-11-20 19:01:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51602 states, 34433 states have (on average 1.2603897423982806) internal successors, (43399), 35169 states have internal predecessors, (43399), 13575 states have call successors, (13575), 3581 states have call predecessors, (13575), 3593 states have return successors, (14608), 13535 states have call predecessors, (14608), 13574 states have call successors, (14608) [2022-11-20 19:01:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51602 states to 51602 states and 71582 transitions. [2022-11-20 19:01:20,827 INFO L78 Accepts]: Start accepts. Automaton has 51602 states and 71582 transitions. Word has length 176 [2022-11-20 19:01:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:01:20,828 INFO L495 AbstractCegarLoop]: Abstraction has 51602 states and 71582 transitions. [2022-11-20 19:01:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 9 states have internal predecessors, (114), 4 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 19:01:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 51602 states and 71582 transitions. [2022-11-20 19:01:20,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-20 19:01:20,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:01:20,849 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:01:20,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 19:01:21,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (19)] Forceful destruction successful, exit code 0 [2022-11-20 19:01:21,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-20 19:01:21,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 19:01:21,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:01:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:01:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2029405459, now seen corresponding path program 1 times [2022-11-20 19:01:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:01:21,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494881385] [2022-11-20 19:01:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:21,466 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 19:01:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:01:21,467 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 19:01:21,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (22)] Waiting until timeout for monitored process [2022-11-20 19:01:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:22,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:01:22,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:01:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:01:24,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:01:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:01:25,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:01:25,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494881385] [2022-11-20 19:01:25,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494881385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:01:25,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1007090812] [2022-11-20 19:01:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:25,658 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:01:25,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:01:25,659 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:01:25,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-20 19:01:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:26,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:01:26,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:01:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:01:28,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:01:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:01:28,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1007090812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:01:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987851175] [2022-11-20 19:01:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:01:28,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:01:28,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:01:28,955 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:01:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 19:01:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:01:30,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 19:01:30,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:01:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:01:31,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:01:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 19:01:32,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987851175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:01:32,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:01:32,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 8, 9] total 11 [2022-11-20 19:01:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247613930] [2022-11-20 19:01:32,138 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:01:32,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 19:01:32,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:01:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 19:01:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:01:32,140 INFO L87 Difference]: Start difference. First operand 51602 states and 71582 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 19:02:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:02:12,369 INFO L93 Difference]: Finished difference Result 109581 states and 152068 transitions. [2022-11-20 19:02:12,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 19:02:12,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 177 [2022-11-20 19:02:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:02:12,566 INFO L225 Difference]: With dead ends: 109581 [2022-11-20 19:02:12,566 INFO L226 Difference]: Without dead ends: 58004 [2022-11-20 19:02:12,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 19:02:12,894 INFO L413 NwaCegarLoop]: 3545 mSDtfsCounter, 6443 mSDsluCounter, 21271 mSDsCounter, 0 mSdLazyCounter, 5118 mSolverCounterSat, 2100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6457 SdHoareTripleChecker+Valid, 24816 SdHoareTripleChecker+Invalid, 7218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2100 IncrementalHoareTripleChecker+Valid, 5118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2022-11-20 19:02:12,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6457 Valid, 24816 Invalid, 7218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2100 Valid, 5118 Invalid, 0 Unknown, 0 Unchecked, 34.4s Time] [2022-11-20 19:02:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58004 states. [2022-11-20 19:02:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58004 to 57748. [2022-11-20 19:02:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57748 states, 38528 states have (on average 1.2602003737541527) internal successors, (48553), 39351 states have internal predecessors, (48553), 15194 states have call successors, (15194), 4012 states have call predecessors, (15194), 4025 states have return successors, (16333), 15147 states have call predecessors, (16333), 15193 states have call successors, (16333) [2022-11-20 19:02:16,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57748 states to 57748 states and 80080 transitions. [2022-11-20 19:02:16,302 INFO L78 Accepts]: Start accepts. Automaton has 57748 states and 80080 transitions. Word has length 177 [2022-11-20 19:02:16,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:02:16,303 INFO L495 AbstractCegarLoop]: Abstraction has 57748 states and 80080 transitions. [2022-11-20 19:02:16,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (39), 4 states have call predecessors, (39), 5 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-20 19:02:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 57748 states and 80080 transitions. [2022-11-20 19:02:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 19:02:16,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:02:16,518 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:02:16,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (22)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:16,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:16,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 19:02:17,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:02:17,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:02:17,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:02:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1224559030, now seen corresponding path program 1 times [2022-11-20 19:02:17,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:02:17,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173584542] [2022-11-20 19:02:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:17,121 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 19:02:17,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:02:17,122 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 19:02:17,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (25)] Waiting until timeout for monitored process [2022-11-20 19:02:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:18,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 19:02:18,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:20,769 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 19:02:20,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 19:02:22,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:02:22,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173584542] [2022-11-20 19:02:22,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173584542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:22,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374970396] [2022-11-20 19:02:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:22,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:02:22,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:02:22,445 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:02:22,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-20 19:02:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:23,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 19:02:23,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 19:02:25,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 19:02:26,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374970396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:26,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071372193] [2022-11-20 19:02:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:02:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:02:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:02:26,359 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:02:26,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 19:02:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:02:27,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 19:02:27,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:02:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 19:02:28,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:02:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 19:02:30,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071372193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:02:30,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:02:30,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11, 12, 11, 12] total 16 [2022-11-20 19:02:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992695280] [2022-11-20 19:02:30,150 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:02:30,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 19:02:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:02:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 19:02:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-20 19:02:30,152 INFO L87 Difference]: Start difference. First operand 57748 states and 80080 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 13 states have internal predecessors, (122), 4 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-20 19:03:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:03:50,120 INFO L93 Difference]: Finished difference Result 152861 states and 212570 transitions. [2022-11-20 19:03:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 19:03:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 13 states have internal predecessors, (122), 4 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 188 [2022-11-20 19:03:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:03:50,621 INFO L225 Difference]: With dead ends: 152861 [2022-11-20 19:03:50,621 INFO L226 Difference]: Without dead ends: 95138 [2022-11-20 19:03:50,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1109 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 19:03:50,772 INFO L413 NwaCegarLoop]: 3873 mSDtfsCounter, 6518 mSDsluCounter, 33889 mSDsCounter, 0 mSdLazyCounter, 10795 mSolverCounterSat, 2386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6532 SdHoareTripleChecker+Valid, 37762 SdHoareTripleChecker+Invalid, 13181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2386 IncrementalHoareTripleChecker+Valid, 10795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.6s IncrementalHoareTripleChecker+Time [2022-11-20 19:03:50,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6532 Valid, 37762 Invalid, 13181 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2386 Valid, 10795 Invalid, 0 Unknown, 0 Unchecked, 70.6s Time] [2022-11-20 19:03:50,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95138 states. [2022-11-20 19:03:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95138 to 88585. [2022-11-20 19:03:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88585 states, 59080 states have (on average 1.2593094109681788) internal successors, (74400), 60339 states have internal predecessors, (74400), 23298 states have call successors, (23298), 6177 states have call predecessors, (23298), 6206 states have return successors, (24997), 23226 states have call predecessors, (24997), 23297 states have call successors, (24997) [2022-11-20 19:03:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88585 states to 88585 states and 122695 transitions. [2022-11-20 19:03:57,534 INFO L78 Accepts]: Start accepts. Automaton has 88585 states and 122695 transitions. Word has length 188 [2022-11-20 19:03:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:03:57,535 INFO L495 AbstractCegarLoop]: Abstraction has 88585 states and 122695 transitions. [2022-11-20 19:03:57,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 13 states have internal predecessors, (122), 4 states have call successors, (41), 5 states have call predecessors, (41), 7 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-20 19:03:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 88585 states and 122695 transitions. [2022-11-20 19:03:57,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-20 19:03:57,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:03:57,567 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:03:57,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-20 19:03:57,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 19:03:58,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (25)] Forceful destruction successful, exit code 0 [2022-11-20 19:03:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 19:03:58,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:03:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:03:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1721012207, now seen corresponding path program 1 times [2022-11-20 19:03:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:03:58,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016085323] [2022-11-20 19:03:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:03:58,184 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 19:03:58,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:03:58,185 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 19:03:58,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_947056dd-815f-4e60-bb09-85f6d6e7e249/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 (28)] Waiting until timeout for monitored process [2022-11-20 19:03:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:04:00,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 19:04:00,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:04:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-20 19:04:00,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:04:00,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:04:00,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016085323] [2022-11-20 19:04:00,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016085323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:04:00,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:04:00,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:04:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466671493] [2022-11-20 19:04:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:04:00,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:04:00,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:04:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:04:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:04:00,138 INFO L87 Difference]: Start difference. First operand 88585 states and 122695 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)