./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.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_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91 --- 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 10:56:56,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:56:56,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:56:56,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:56:56,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:56:56,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:56:56,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:56:56,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:56:56,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:56:56,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:56:56,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:56:56,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:56:56,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:56:56,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:56:56,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:56:56,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:56:56,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:56:56,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:56:56,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:56:56,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:56:56,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:56:56,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:56:56,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:56:56,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:56:56,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:56:56,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:56:56,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:56:56,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:56:56,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:56:56,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:56:56,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:56:56,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:56:56,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:56:56,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:56:56,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:56:56,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:56:56,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:56:56,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:56:56,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:56:56,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:56:56,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:56:56,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:56:56,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:56:56,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:56:56,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:56:56,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:56:56,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:56:56,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:56:56,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:56:56,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:56:56,913 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:56:56,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:56:56,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:56:56,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:56:56,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:56:56,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:56:56,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:56:56,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:56:56,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:56:56,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:56:56,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:56:56,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:56:56,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:56:56,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:56,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:56:56,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:56:56,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:56:56,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:56:56,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:56:56,919 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:56:56,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:56:56,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:56:56,920 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_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91 [2022-11-20 10:56:57,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:56:57,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:56:57,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:56:57,215 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:56:57,215 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:56:57,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2022-11-20 10:57:00,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:57:00,831 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:57:00,832 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2022-11-20 10:57:00,873 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data/35bed9984/3f8e9bcb8062499fab18f0bdd3669394/FLAGcfccf783b [2022-11-20 10:57:00,899 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data/35bed9984/3f8e9bcb8062499fab18f0bdd3669394 [2022-11-20 10:57:00,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:57:00,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:57:00,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:00,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:57:00,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:57:00,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:00" (1/1) ... [2022-11-20 10:57:00,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9323e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:00, skipping insertion in model container [2022-11-20 10:57:00,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:00" (1/1) ... [2022-11-20 10:57:00,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:57:01,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:01,611 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2022-11-20 10:57:01,614 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2022-11-20 10:57:01,938 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_d88f39fb-6839-49ed-93e4-a84fce515900/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158] [2022-11-20 10:57:02,417 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: Unknown Expression StructAccessExpression at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:407) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValueFromBinaryExpression(TypeSizes.java:545) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:399) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:354) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftLeft(BitabsTranslation.java:148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:187) 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: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.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: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.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:675) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1469) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java: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 10:57:02,423 INFO L158 Benchmark]: Toolchain (without parser) took 1513.94ms. Allocated memory is still 184.5MB. Free memory was 143.9MB in the beginning and 92.2MB in the end (delta: 51.7MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-20 10:57:02,423 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:02,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1508.02ms. Allocated memory is still 184.5MB. Free memory was 143.9MB in the beginning and 92.2MB in the end (delta: 51.7MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-11-20 10:57:02,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1508.02ms. Allocated memory is still 184.5MB. Free memory was 143.9MB in the beginning and 92.2MB in the end (delta: 51.7MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: Unknown Expression StructAccessExpression de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: Unknown Expression StructAccessExpression: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:407) 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_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91 --- 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 10:57:04,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:57:04,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:57:04,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:57:04,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:57:04,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:57:04,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:57:04,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:57:04,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:57:04,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:57:04,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:57:04,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:57:04,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:57:04,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:57:04,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:57:04,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:57:04,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:57:04,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:57:04,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:57:04,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:57:04,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:57:04,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:57:04,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:57:04,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:57:04,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:57:04,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:57:04,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:57:04,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:57:04,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:57:04,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:57:04,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:57:04,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:57:04,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:57:04,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:57:04,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:57:04,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:57:04,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:57:04,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:57:04,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:57:04,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:57:04,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:57:04,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:57:04,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:57:04,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:57:04,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:57:04,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:57:04,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:57:04,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:57:04,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:57:04,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:57:04,911 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:57:04,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:57:04,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:57:04,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:57:04,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:57:04,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:57:04,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:57:04,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:57:04,913 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:57:04,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:57:04,914 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:57:04,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:57:04,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:57:04,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:57:04,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:57:04,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:04,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:57:04,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:57:04,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:57:04,916 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:57:04,917 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:57:04,917 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:57:04,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:57:04,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:57:04,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:57:04,918 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_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2c7848ca043d8b9ca4f9ab4b1ce08f583c2bd8d8967a557df683af547558d91 [2022-11-20 10:57:05,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:57:05,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:57:05,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:57:05,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:57:05,339 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:57:05,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2022-11-20 10:57:08,418 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:57:09,043 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:57:09,044 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2022-11-20 10:57:09,086 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data/84bda65f6/5df3544f17124e918f266f85ebe6fbdc/FLAG963cde36b [2022-11-20 10:57:09,114 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/data/84bda65f6/5df3544f17124e918f266f85ebe6fbdc [2022-11-20 10:57:09,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:57:09,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:57:09,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:09,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:57:09,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:57:09,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:09" (1/1) ... [2022-11-20 10:57:09,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd875ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:09, skipping insertion in model container [2022-11-20 10:57:09,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:09" (1/1) ... [2022-11-20 10:57:09,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:57:09,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:09,773 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2022-11-20 10:57:09,774 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2022-11-20 10:57:10,080 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_d88f39fb-6839-49ed-93e4-a84fce515900/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158] [2022-11-20 10:57:10,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:11,390 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:57:11,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:11,554 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2022-11-20 10:57:11,554 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2022-11-20 10:57:11,566 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_d88f39fb-6839-49ed-93e4-a84fce515900/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158] [2022-11-20 10:57:11,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:12,179 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:57:12,269 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3602] [2022-11-20 10:57:12,269 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3603-3604] [2022-11-20 10:57:12,277 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_d88f39fb-6839-49ed-93e4-a84fce515900/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i[110145,110158] [2022-11-20 10:57:12,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:12,634 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:57:12,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12 WrapperNode [2022-11-20 10:57:12,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:12,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:12,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:57:12,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:57:12,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:12,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:12,951 INFO L138 Inliner]: procedures = 213, calls = 1517, calls flagged for inlining = 95, calls inlined = 93, statements flattened = 3669 [2022-11-20 10:57:12,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:12,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:57:12,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:57:12,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:57:12,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:12,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:57:13,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:57:13,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:57:13,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:57:13,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (1/1) ... [2022-11-20 10:57:13,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:13,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:13,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:13,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:57:13,401 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_start [2022-11-20 10:57:13,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_start [2022-11-20 10:57:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_set_termios [2022-11-20 10:57:13,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_set_termios [2022-11-20 10:57:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:57:13,402 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 10:57:13,402 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 10:57:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:57:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:57:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 10:57:13,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:57:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:57:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:57:13,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:57:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2022-11-20 10:57:13,405 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2022-11-20 10:57:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 10:57:13,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 10:57:13,405 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmset [2022-11-20 10:57:13,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmset [2022-11-20 10:57:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_3 [2022-11-20 10:57:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_3 [2022-11-20 10:57:13,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:57:13,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:57:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2022-11-20 10:57:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2022-11-20 10:57:13,407 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-20 10:57:13,407 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-20 10:57:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure raise_dtr [2022-11-20 10:57:13,408 INFO L138 BoogieDeclarations]: Found implementation of procedure raise_dtr [2022-11-20 10:57:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2022-11-20 10:57:13,408 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2022-11-20 10:57:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_chars_in_buffer [2022-11-20 10:57:13,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_chars_in_buffer [2022-11-20 10:57:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char [2022-11-20 10:57:13,409 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char [2022-11-20 10:57:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 10:57:13,410 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 10:57:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_buffer [2022-11-20 10:57:13,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_buffer [2022-11-20 10:57:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 10:57:13,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 10:57:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 10:57:13,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 10:57:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure outsw [2022-11-20 10:57:13,411 INFO L138 BoogieDeclarations]: Found implementation of procedure outsw [2022-11-20 10:57:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:57:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:57:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure insw [2022-11-20 10:57:13,412 INFO L138 BoogieDeclarations]: Found implementation of procedure insw [2022-11-20 10:57:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_put_char [2022-11-20 10:57:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_put_char [2022-11-20 10:57:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:57:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:57:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 10:57:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 10:57:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_write_room [2022-11-20 10:57:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_write_room [2022-11-20 10:57:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_ioctl [2022-11-20 10:57:13,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_ioctl [2022-11-20 10:57:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-20 10:57:13,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-20 10:57:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure drop_dtr [2022-11-20 10:57:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_dtr [2022-11-20 10:57:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 10:57:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 10:57:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:57:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:57:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:57:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:57:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:57:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:57:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-20 10:57:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-20 10:57:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:57:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:57:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:57:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-20 10:57:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-20 10:57:13,419 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-20 10:57:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-20 10:57:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 10:57:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 10:57:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2022-11-20 10:57:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2022-11-20 10:57:13,420 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 10:57:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 10:57:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_dtr_rts [2022-11-20 10:57:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_dtr_rts [2022-11-20 10:57:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-20 10:57:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-20 10:57:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-20 10:57:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-20 10:57:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_config_port [2022-11-20 10:57:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_config_port [2022-11-20 10:57:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_tiocmget [2022-11-20 10:57:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_tiocmget [2022-11-20 10:57:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_unthrottle [2022-11-20 10:57:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_unthrottle [2022-11-20 10:57:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure lock_card [2022-11-20 10:57:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_card [2022-11-20 10:57:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_flush_chars [2022-11-20 10:57:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_flush_chars [2022-11-20 10:57:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 10:57:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 10:57:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:57:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:57:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-20 10:57:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-20 10:57:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-20 10:57:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-20 10:57:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:57:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-20 10:57:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:57:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:57:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_carrier_raised [2022-11-20 10:57:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_carrier_raised [2022-11-20 10:57:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:57:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_hangup [2022-11-20 10:57:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_hangup [2022-11-20 10:57:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_throttle [2022-11-20 10:57:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_throttle [2022-11-20 10:57:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:57:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-11-20 10:57:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-11-20 10:57:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:57:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:57:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:57:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-20 10:57:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-20 10:57:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 10:57:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_card [2022-11-20 10:57:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_card [2022-11-20 10:57:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure isicom_send_break [2022-11-20 10:57:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isicom_send_break [2022-11-20 10:57:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-20 10:57:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-20 10:57:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-20 10:57:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure WaitTillCardIsFree [2022-11-20 10:57:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure WaitTillCardIsFree [2022-11-20 10:57:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:57:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:57:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-20 10:57:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-20 10:57:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-20 10:57:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-20 10:57:14,288 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:57:14,292 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:57:18,200 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:57:46,222 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:57:46,241 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:57:46,242 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:57:46,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:46 BoogieIcfgContainer [2022-11-20 10:57:46,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:57:46,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:57:46,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:57:46,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:57:46,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:57:09" (1/3) ... [2022-11-20 10:57:46,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff6f87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:46, skipping insertion in model container [2022-11-20 10:57:46,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:12" (2/3) ... [2022-11-20 10:57:46,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff6f87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:46, skipping insertion in model container [2022-11-20 10:57:46,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:46" (3/3) ... [2022-11-20 10:57:46,258 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--isicom.ko-entry_point.cil.out.i [2022-11-20 10:57:46,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:57:46,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:57:46,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:57:46,387 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@243632e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:57:46,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:57:46,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 1299 states, 908 states have (on average 1.4041850220264318) internal successors, (1275), 939 states have internal predecessors, (1275), 330 states have call successors, (330), 61 states have call predecessors, (330), 60 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) [2022-11-20 10:57:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-20 10:57:46,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:46,460 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 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 10:57:46,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1649688454, now seen corresponding path program 1 times [2022-11-20 10:57:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:46,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4576780] [2022-11-20 10:57:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:46,496 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 10:57:46,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:46,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:46,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:57:48,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 10:57:48,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:48,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:48,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4576780] [2022-11-20 10:57:48,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4576780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:48,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:48,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587097305] [2022-11-20 10:57:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:48,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:48,981 INFO L87 Difference]: Start difference. First operand has 1299 states, 908 states have (on average 1.4041850220264318) internal successors, (1275), 939 states have internal predecessors, (1275), 330 states have call successors, (330), 61 states have call predecessors, (330), 60 states have return successors, (322), 320 states have call predecessors, (322), 322 states have call successors, (322) Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 10:57:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:49,496 INFO L93 Difference]: Finished difference Result 3637 states and 5495 transitions. [2022-11-20 10:57:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:49,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 188 [2022-11-20 10:57:49,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:49,546 INFO L225 Difference]: With dead ends: 3637 [2022-11-20 10:57:49,546 INFO L226 Difference]: Without dead ends: 2302 [2022-11-20 10:57:49,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:49,579 INFO L413 NwaCegarLoop]: 2167 mSDtfsCounter, 1552 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 4060 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:49,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 4060 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:57:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-11-20 10:57:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2022-11-20 10:57:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1621 states have (on average 1.3997532387415177) internal successors, (2269), 1661 states have internal predecessors, (2269), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-20 10:57:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3404 transitions. [2022-11-20 10:57:49,855 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3404 transitions. Word has length 188 [2022-11-20 10:57:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:49,855 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3404 transitions. [2022-11-20 10:57:49,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 10:57:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3404 transitions. [2022-11-20 10:57:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-20 10:57:49,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:49,898 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:49,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:50,116 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1044374452, now seen corresponding path program 1 times [2022-11-20 10:57:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:50,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658063128] [2022-11-20 10:57:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:50,121 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 10:57:50,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:50,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:50,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:52,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:57:52,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-20 10:57:52,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:52,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:52,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658063128] [2022-11-20 10:57:52,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658063128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:52,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:52,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760803464] [2022-11-20 10:57:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:52,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:52,705 INFO L87 Difference]: Start difference. First operand 2302 states and 3404 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 10:57:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:54,896 INFO L93 Difference]: Finished difference Result 4596 states and 6797 transitions. [2022-11-20 10:57:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:54,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 248 [2022-11-20 10:57:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:54,930 INFO L225 Difference]: With dead ends: 4596 [2022-11-20 10:57:54,931 INFO L226 Difference]: Without dead ends: 2314 [2022-11-20 10:57:54,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:54,945 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 6 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:54,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3760 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 10:57:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-11-20 10:57:55,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2304. [2022-11-20 10:57:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 1623 states have (on average 1.399260628465804) internal successors, (2271), 1663 states have internal predecessors, (2271), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-20 10:57:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3406 transitions. [2022-11-20 10:57:55,113 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3406 transitions. Word has length 248 [2022-11-20 10:57:55,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:55,114 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3406 transitions. [2022-11-20 10:57:55,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 10:57:55,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3406 transitions. [2022-11-20 10:57:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-20 10:57:55,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:55,138 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:55,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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)] Ended with exit code 0 [2022-11-20 10:57:55,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:55,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 540573554, now seen corresponding path program 1 times [2022-11-20 10:57:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:55,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331424597] [2022-11-20 10:57:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:55,368 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 10:57:55,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:55,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:55,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:57,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:57:57,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-20 10:57:57,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:57,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:57,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331424597] [2022-11-20 10:57:57,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331424597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:57,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:57,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235864912] [2022-11-20 10:57:57,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:57,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:57,492 INFO L87 Difference]: Start difference. First operand 2304 states and 3406 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 10:57:59,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:59,375 INFO L93 Difference]: Finished difference Result 4592 states and 6791 transitions. [2022-11-20 10:57:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 253 [2022-11-20 10:57:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:59,404 INFO L225 Difference]: With dead ends: 4592 [2022-11-20 10:57:59,404 INFO L226 Difference]: Without dead ends: 2308 [2022-11-20 10:57:59,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:59,416 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 1 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3765 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:59,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3765 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 10:57:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2022-11-20 10:57:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2306. [2022-11-20 10:57:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 1625 states have (on average 1.3987692307692308) internal successors, (2273), 1665 states have internal predecessors, (2273), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-20 10:57:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3408 transitions. [2022-11-20 10:57:59,530 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3408 transitions. Word has length 253 [2022-11-20 10:57:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:59,531 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 3408 transitions. [2022-11-20 10:57:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-20 10:57:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3408 transitions. [2022-11-20 10:57:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-20 10:57:59,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:59,551 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:59,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:59,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:59,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash -972568786, now seen corresponding path program 1 times [2022-11-20 10:57:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:59,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177758869] [2022-11-20 10:57:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:59,770 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 10:57:59,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:59,772 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:57:59,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:58:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:02,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2561 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:58:02,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 69 proven. 1 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-20 10:58:02,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-11-20 10:58:02,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:02,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177758869] [2022-11-20 10:58:02,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177758869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:02,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:58:02,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 10:58:02,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215274426] [2022-11-20 10:58:02,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:02,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:58:02,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:58:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:58:02,486 INFO L87 Difference]: Start difference. First operand 2306 states and 3408 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 10:58:06,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:08,251 INFO L93 Difference]: Finished difference Result 4604 states and 6807 transitions. [2022-11-20 10:58:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:58:08,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 255 [2022-11-20 10:58:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:08,280 INFO L225 Difference]: With dead ends: 4604 [2022-11-20 10:58:08,280 INFO L226 Difference]: Without dead ends: 2318 [2022-11-20 10:58:08,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:58:08,290 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 5 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5646 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:08,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5646 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 10:58:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-11-20 10:58:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2318. [2022-11-20 10:58:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 1637 states have (on average 1.3958460598656077) internal successors, (2285), 1677 states have internal predecessors, (2285), 568 states have call successors, (568), 113 states have call predecessors, (568), 112 states have return successors, (567), 563 states have call predecessors, (567), 567 states have call successors, (567) [2022-11-20 10:58:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3420 transitions. [2022-11-20 10:58:08,389 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3420 transitions. Word has length 255 [2022-11-20 10:58:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:08,389 INFO L495 AbstractCegarLoop]: Abstraction has 2318 states and 3420 transitions. [2022-11-20 10:58:08,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 10:58:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3420 transitions. [2022-11-20 10:58:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-20 10:58:08,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:08,406 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:08,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:08,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:08,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -798841758, now seen corresponding path program 2 times [2022-11-20 10:58:08,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:08,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181489982] [2022-11-20 10:58:08,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:58:08,625 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 10:58:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:08,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:10,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:58:10,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:58:10,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:58:10,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-20 10:58:11,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:11,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:11,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181489982] [2022-11-20 10:58:11,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181489982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:11,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:11,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:58:11,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634665780] [2022-11-20 10:58:11,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:11,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:58:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:58:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:11,522 INFO L87 Difference]: Start difference. First operand 2318 states and 3420 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-20 10:58:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:11,663 INFO L93 Difference]: Finished difference Result 3775 states and 5644 transitions. [2022-11-20 10:58:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:58:11,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 261 [2022-11-20 10:58:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:11,687 INFO L225 Difference]: With dead ends: 3775 [2022-11-20 10:58:11,688 INFO L226 Difference]: Without dead ends: 3772 [2022-11-20 10:58:11,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:11,692 INFO L413 NwaCegarLoop]: 2166 mSDtfsCounter, 1203 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 3960 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 10:58:11,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 3960 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:58:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-11-20 10:58:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3694. [2022-11-20 10:58:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 2654 states have (on average 1.4076865109269028) internal successors, (3736), 2706 states have internal predecessors, (3736), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 10:58:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 5503 transitions. [2022-11-20 10:58:11,871 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 5503 transitions. Word has length 261 [2022-11-20 10:58:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:11,872 INFO L495 AbstractCegarLoop]: Abstraction has 3694 states and 5503 transitions. [2022-11-20 10:58:11,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-20 10:58:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 5503 transitions. [2022-11-20 10:58:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-20 10:58:11,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:11,898 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:11,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:12,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash 12308512, now seen corresponding path program 1 times [2022-11-20 10:58:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:12,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455720900] [2022-11-20 10:58:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:12,130 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 10:58:12,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:12,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:12,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:58:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:58:14,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 73 proven. 16 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-20 10:58:14,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-20 10:58:15,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455720900] [2022-11-20 10:58:15,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455720900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:15,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:58:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-20 10:58:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006038429] [2022-11-20 10:58:15,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:15,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:58:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:58:15,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:58:15,179 INFO L87 Difference]: Start difference. First operand 3694 states and 5503 transitions. Second operand has 12 states, 12 states have (on average 17.25) internal successors, (207), 12 states have internal predecessors, (207), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 10:58:20,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:21,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:23,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:25,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:29,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:32,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:37,090 INFO L93 Difference]: Finished difference Result 7416 states and 11051 transitions. [2022-11-20 10:58:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:58:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.25) internal successors, (207), 12 states have internal predecessors, (207), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 296 [2022-11-20 10:58:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:37,142 INFO L225 Difference]: With dead ends: 7416 [2022-11-20 10:58:37,142 INFO L226 Difference]: Without dead ends: 3742 [2022-11-20 10:58:37,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:58:37,163 INFO L413 NwaCegarLoop]: 1884 mSDtfsCounter, 10 mSDsluCounter, 9405 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11289 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:37,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11289 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2022-11-20 10:58:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-11-20 10:58:37,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2022-11-20 10:58:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 2702 states have (on average 1.4004441154700222) internal successors, (3784), 2754 states have internal predecessors, (3784), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 10:58:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 5551 transitions. [2022-11-20 10:58:37,514 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 5551 transitions. Word has length 296 [2022-11-20 10:58:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:37,514 INFO L495 AbstractCegarLoop]: Abstraction has 3742 states and 5551 transitions. [2022-11-20 10:58:37,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.25) internal successors, (207), 12 states have internal predecessors, (207), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 10:58:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 5551 transitions. [2022-11-20 10:58:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-20 10:58:37,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:37,551 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:37,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:37,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:37,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash 207143352, now seen corresponding path program 2 times [2022-11-20 10:58:37,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:37,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037319468] [2022-11-20 10:58:37,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:58:37,779 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 10:58:37,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:37,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:37,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:39,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 10:58:39,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:58:39,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1882 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:58:39,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-20 10:58:39,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:39,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:39,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037319468] [2022-11-20 10:58:39,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037319468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:39,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:39,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:58:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392872964] [2022-11-20 10:58:39,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:58:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:39,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:58:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:39,966 INFO L87 Difference]: Start difference. First operand 3742 states and 5551 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 10:58:40,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:40,180 INFO L93 Difference]: Finished difference Result 7467 states and 11172 transitions. [2022-11-20 10:58:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:58:40,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 308 [2022-11-20 10:58:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:40,208 INFO L225 Difference]: With dead ends: 7467 [2022-11-20 10:58:40,208 INFO L226 Difference]: Without dead ends: 3745 [2022-11-20 10:58:40,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:40,229 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 0 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:40,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3755 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:58:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2022-11-20 10:58:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 3742. [2022-11-20 10:58:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 2702 states have (on average 1.3971132494448557) internal successors, (3775), 2754 states have internal predecessors, (3775), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 10:58:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 5542 transitions. [2022-11-20 10:58:40,534 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 5542 transitions. Word has length 308 [2022-11-20 10:58:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:40,535 INFO L495 AbstractCegarLoop]: Abstraction has 3742 states and 5542 transitions. [2022-11-20 10:58:40,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 2 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-20 10:58:40,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 5542 transitions. [2022-11-20 10:58:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-20 10:58:40,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:40,573 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:40,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:40,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash -453129022, now seen corresponding path program 1 times [2022-11-20 10:58:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:40,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443931069] [2022-11-20 10:58:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:40,798 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 10:58:40,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:40,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 10:58:40,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:58:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:44,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 10:58:44,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 73 proven. 100 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-20 10:58:44,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 9 proven. 100 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 10:58:45,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443931069] [2022-11-20 10:58:45,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443931069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:45,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:58:45,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-20 10:58:45,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880873501] [2022-11-20 10:58:45,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:45,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:58:45,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:58:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:58:45,710 INFO L87 Difference]: Start difference. First operand 3742 states and 5542 transitions. Second operand has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 24 states have internal predecessors, (235), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 10:58:56,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:58,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:00,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:13,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:15,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:25,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:26,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:27,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:29,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:32,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:34,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:37,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:42,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:47,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:50,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:54,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:58,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:00,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:01,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:05,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:13,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:19,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:20,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:20,727 INFO L93 Difference]: Finished difference Result 7512 states and 11129 transitions. [2022-11-20 11:00:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:00:20,742 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 24 states have internal predecessors, (235), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 312 [2022-11-20 11:00:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:20,773 INFO L225 Difference]: With dead ends: 7512 [2022-11-20 11:00:20,773 INFO L226 Difference]: Without dead ends: 3790 [2022-11-20 11:00:20,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:00:20,786 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 17 mSDsluCounter, 28170 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 30051 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:20,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 30051 Invalid, 304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 94.3s Time] [2022-11-20 11:00:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-11-20 11:00:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3790. [2022-11-20 11:00:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3790 states, 2750 states have (on average 1.3901818181818182) internal successors, (3823), 2802 states have internal predecessors, (3823), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 11:00:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3790 states to 3790 states and 5590 transitions. [2022-11-20 11:00:20,978 INFO L78 Accepts]: Start accepts. Automaton has 3790 states and 5590 transitions. Word has length 312 [2022-11-20 11:00:20,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:20,978 INFO L495 AbstractCegarLoop]: Abstraction has 3790 states and 5590 transitions. [2022-11-20 11:00:20,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 24 states have internal predecessors, (235), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 11:00:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states and 5590 transitions. [2022-11-20 11:00:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-20 11:00:21,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:21,001 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:21,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:21,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:21,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash 125079130, now seen corresponding path program 2 times [2022-11-20 11:00:21,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:00:21,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886580953] [2022-11-20 11:00:21,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:00:21,222 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 11:00:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:00:21,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:21,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:23,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:00:23,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:00:23,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1886 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:00:23,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2022-11-20 11:00:23,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:23,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:00:23,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886580953] [2022-11-20 11:00:23,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886580953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:23,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:23,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:00:23,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7114385] [2022-11-20 11:00:23,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:23,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:00:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:00:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:00:23,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:00:23,265 INFO L87 Difference]: Start difference. First operand 3790 states and 5590 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:00:25,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:26,579 INFO L93 Difference]: Finished difference Result 9386 states and 14111 transitions. [2022-11-20 11:00:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:00:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 324 [2022-11-20 11:00:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:26,629 INFO L225 Difference]: With dead ends: 9386 [2022-11-20 11:00:26,629 INFO L226 Difference]: Without dead ends: 5616 [2022-11-20 11:00:26,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:00:26,646 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 572 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:26,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 4682 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 11:00:26,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5616 states. [2022-11-20 11:00:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5616 to 3798. [2022-11-20 11:00:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3798 states, 2758 states have (on average 1.3897751994198695) internal successors, (3833), 2810 states have internal predecessors, (3833), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 11:00:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3798 states to 3798 states and 5600 transitions. [2022-11-20 11:00:26,871 INFO L78 Accepts]: Start accepts. Automaton has 3798 states and 5600 transitions. Word has length 324 [2022-11-20 11:00:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:26,872 INFO L495 AbstractCegarLoop]: Abstraction has 3798 states and 5600 transitions. [2022-11-20 11:00:26,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:00:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3798 states and 5600 transitions. [2022-11-20 11:00:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-20 11:00:26,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:26,891 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 8, 8, 8, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:26,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:27,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:27,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash 636372761, now seen corresponding path program 1 times [2022-11-20 11:00:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:00:27,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95026165] [2022-11-20 11:00:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:00:27,110 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 11:00:27,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:00:27,111 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:27,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-20 11:00:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:00:30,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:00:30,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-11-20 11:00:30,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:00:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2022-11-20 11:00:30,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:00:30,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95026165] [2022-11-20 11:00:30,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95026165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:00:30,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:00:30,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-20 11:00:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057705216] [2022-11-20 11:00:30,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:00:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:30,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:00:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:00:30,754 INFO L87 Difference]: Start difference. First operand 3798 states and 5600 transitions. Second operand has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 11:00:37,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:00:37,442 INFO L93 Difference]: Finished difference Result 8020 states and 11641 transitions. [2022-11-20 11:00:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:00:37,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 326 [2022-11-20 11:00:37,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:00:37,463 INFO L225 Difference]: With dead ends: 8020 [2022-11-20 11:00:37,464 INFO L226 Difference]: Without dead ends: 4242 [2022-11-20 11:00:37,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:00:37,479 INFO L413 NwaCegarLoop]: 1880 mSDtfsCounter, 30 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:00:37,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 5634 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 11:00:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2022-11-20 11:00:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 4242. [2022-11-20 11:00:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 3202 states have (on average 1.33947532792005) internal successors, (4289), 3254 states have internal predecessors, (4289), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 11:00:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 6056 transitions. [2022-11-20 11:00:37,780 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 6056 transitions. Word has length 326 [2022-11-20 11:00:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:00:37,780 INFO L495 AbstractCegarLoop]: Abstraction has 4242 states and 6056 transitions. [2022-11-20 11:00:37,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.333333333333336) internal successors, (206), 6 states have internal predecessors, (206), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 11:00:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 6056 transitions. [2022-11-20 11:00:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-20 11:00:37,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:00:37,803 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:37,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:00:38,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:38,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:00:38,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:00:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 415388607, now seen corresponding path program 2 times [2022-11-20 11:00:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:00:38,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535961320] [2022-11-20 11:00:38,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:00:38,073 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 11:00:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:00:38,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:38,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:00:46,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:00:46,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:00:46,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1890 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:00:46,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:00:47,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:00:47,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 385 treesize of output 270 [2022-11-20 11:00:47,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:00:47,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 170 [2022-11-20 11:00:47,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 41 [2022-11-20 11:00:48,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4606 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 4546 trivial. 0 not checked. [2022-11-20 11:00:48,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:00:48,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:00:48,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535961320] [2022-11-20 11:00:48,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535961320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:00:48,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:00:48,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:00:48,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659601478] [2022-11-20 11:00:48,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:00:48,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:00:48,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:00:48,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:00:48,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:00:48,028 INFO L87 Difference]: Start difference. First operand 4242 states and 6056 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:00:49,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:52,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:54,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:56,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:00:58,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:00,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:03,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:05,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:09,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:18,072 INFO L93 Difference]: Finished difference Result 8623 states and 12341 transitions. [2022-11-20 11:01:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:01:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 437 [2022-11-20 11:01:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:18,094 INFO L225 Difference]: With dead ends: 8623 [2022-11-20 11:01:18,094 INFO L226 Difference]: Without dead ends: 4401 [2022-11-20 11:01:18,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:01:18,108 INFO L413 NwaCegarLoop]: 1900 mSDtfsCounter, 58 mSDsluCounter, 3670 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5570 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:18,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5570 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 7 Unknown, 64 Unchecked, 29.3s Time] [2022-11-20 11:01:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2022-11-20 11:01:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 4250. [2022-11-20 11:01:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 3210 states have (on average 1.3392523364485982) internal successors, (4299), 3262 states have internal predecessors, (4299), 850 states have call successors, (850), 190 states have call predecessors, (850), 189 states have return successors, (917), 838 states have call predecessors, (917), 849 states have call successors, (917) [2022-11-20 11:01:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 6066 transitions. [2022-11-20 11:01:18,419 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 6066 transitions. Word has length 437 [2022-11-20 11:01:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:18,420 INFO L495 AbstractCegarLoop]: Abstraction has 4250 states and 6066 transitions. [2022-11-20 11:01:18,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-20 11:01:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 6066 transitions. [2022-11-20 11:01:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2022-11-20 11:01:18,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:18,449 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:18,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:18,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:18,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash -834280739, now seen corresponding path program 1 times [2022-11-20 11:01:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:18,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095929739] [2022-11-20 11:01:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:18,675 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 11:01:18,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:18,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:18,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-20 11:01:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:28,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 5677 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:01:28,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5163 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 5085 trivial. 0 not checked. [2022-11-20 11:01:30,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:30,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:01:30,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095929739] [2022-11-20 11:01:30,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095929739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:30,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:30,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:01:30,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105496160] [2022-11-20 11:01:30,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:30,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:01:30,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:01:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:01:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:01:30,553 INFO L87 Difference]: Start difference. First operand 4250 states and 6066 transitions. Second operand has 12 states, 10 states have (on average 17.2) internal successors, (172), 9 states have internal predecessors, (172), 4 states have call successors, (50), 2 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2022-11-20 11:01:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:36,435 INFO L93 Difference]: Finished difference Result 13694 states and 20011 transitions. [2022-11-20 11:01:36,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:01:36,436 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 17.2) internal successors, (172), 9 states have internal predecessors, (172), 4 states have call successors, (50), 2 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) Word has length 555 [2022-11-20 11:01:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:36,477 INFO L225 Difference]: With dead ends: 13694 [2022-11-20 11:01:36,477 INFO L226 Difference]: Without dead ends: 9464 [2022-11-20 11:01:36,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:01:36,495 INFO L413 NwaCegarLoop]: 2825 mSDtfsCounter, 2916 mSDsluCounter, 27210 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 30035 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:36,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 30035 Invalid, 968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [549 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 11:01:36,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9464 states. [2022-11-20 11:01:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9464 to 4278. [2022-11-20 11:01:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 3230 states have (on average 1.3371517027863777) internal successors, (4319), 3282 states have internal predecessors, (4319), 854 states have call successors, (854), 190 states have call predecessors, (854), 193 states have return successors, (931), 846 states have call predecessors, (931), 853 states have call successors, (931) [2022-11-20 11:01:37,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 6104 transitions. [2022-11-20 11:01:37,161 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 6104 transitions. Word has length 555 [2022-11-20 11:01:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:37,162 INFO L495 AbstractCegarLoop]: Abstraction has 4278 states and 6104 transitions. [2022-11-20 11:01:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 17.2) internal successors, (172), 9 states have internal predecessors, (172), 4 states have call successors, (50), 2 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2022-11-20 11:01:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 6104 transitions. [2022-11-20 11:01:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2022-11-20 11:01:37,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:37,191 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:37,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:01:37,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:37,415 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:37,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1474249957, now seen corresponding path program 1 times [2022-11-20 11:01:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:37,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245606144] [2022-11-20 11:01:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:37,421 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 11:01:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:37,423 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:37,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:48,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 5677 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:01:48,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5163 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 5085 trivial. 0 not checked. [2022-11-20 11:01:48,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:48,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:01:48,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245606144] [2022-11-20 11:01:48,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245606144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:48,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:48,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:01:48,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87119424] [2022-11-20 11:01:48,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:48,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:01:48,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:01:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:01:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:01:48,662 INFO L87 Difference]: Start difference. First operand 4278 states and 6104 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 11:01:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:49,771 INFO L93 Difference]: Finished difference Result 8552 states and 12201 transitions. [2022-11-20 11:01:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:01:49,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 555 [2022-11-20 11:01:49,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:49,794 INFO L225 Difference]: With dead ends: 8552 [2022-11-20 11:01:49,794 INFO L226 Difference]: Without dead ends: 4278 [2022-11-20 11:01:49,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:01:49,807 INFO L413 NwaCegarLoop]: 1880 mSDtfsCounter, 6 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7510 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:49,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7510 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:01:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4278 states. [2022-11-20 11:01:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4278 to 4278. [2022-11-20 11:01:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 3230 states have (on average 1.3359133126934986) internal successors, (4315), 3278 states have internal predecessors, (4315), 854 states have call successors, (854), 190 states have call predecessors, (854), 193 states have return successors, (931), 846 states have call predecessors, (931), 853 states have call successors, (931) [2022-11-20 11:01:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 6100 transitions. [2022-11-20 11:01:50,392 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 6100 transitions. Word has length 555 [2022-11-20 11:01:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:50,393 INFO L495 AbstractCegarLoop]: Abstraction has 4278 states and 6100 transitions. [2022-11-20 11:01:50,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-20 11:01:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 6100 transitions. [2022-11-20 11:01:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2022-11-20 11:01:50,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:50,415 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:01:50,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:50,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:50,639 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:50,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:50,639 INFO L85 PathProgramCache]: Analyzing trace with hash 222292730, now seen corresponding path program 1 times [2022-11-20 11:01:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:50,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994701641] [2022-11-20 11:01:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:50,643 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 11:01:50,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:50,645 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:01:50,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (15)] Waiting until timeout for monitored process [2022-11-20 11:02:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:03,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 6626 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:02:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5163 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 5085 trivial. 0 not checked. [2022-11-20 11:02:04,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:04,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:04,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994701641] [2022-11-20 11:02:04,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994701641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:04,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:04,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:02:04,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955713204] [2022-11-20 11:02:04,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:04,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:02:04,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:02:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:04,714 INFO L87 Difference]: Start difference. First operand 4278 states and 6100 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 3 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 11:02:08,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:02:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:09,566 INFO L93 Difference]: Finished difference Result 10372 states and 14777 transitions. [2022-11-20 11:02:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:02:09,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 3 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) Word has length 564 [2022-11-20 11:02:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:09,596 INFO L225 Difference]: With dead ends: 10372 [2022-11-20 11:02:09,596 INFO L226 Difference]: Without dead ends: 6060 [2022-11-20 11:02:09,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:02:09,614 INFO L413 NwaCegarLoop]: 2124 mSDtfsCounter, 1519 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 14584 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:09,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 14584 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 11:02:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2022-11-20 11:02:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6054. [2022-11-20 11:02:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 4586 states have (on average 1.3371129524640208) internal successors, (6132), 4661 states have internal predecessors, (6132), 1193 states have call successors, (1193), 271 states have call predecessors, (1193), 274 states have return successors, (1301), 1174 states have call predecessors, (1301), 1192 states have call successors, (1301) [2022-11-20 11:02:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 8626 transitions. [2022-11-20 11:02:10,440 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 8626 transitions. Word has length 564 [2022-11-20 11:02:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:10,441 INFO L495 AbstractCegarLoop]: Abstraction has 6054 states and 8626 transitions. [2022-11-20 11:02:10,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 3 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (50), 4 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-20 11:02:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 8626 transitions. [2022-11-20 11:02:10,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-11-20 11:02:10,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:10,473 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:10,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:02:10,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:02:10,699 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1815150462, now seen corresponding path program 1 times [2022-11-20 11:02:10,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:10,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803119814] [2022-11-20 11:02:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:10,704 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 11:02:10,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:10,705 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:02:10,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:02:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 6669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:02:19,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5181 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 5107 trivial. 0 not checked. [2022-11-20 11:02:19,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:19,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:19,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803119814] [2022-11-20 11:02:19,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803119814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:19,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:19,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362297362] [2022-11-20 11:02:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:19,265 INFO L87 Difference]: Start difference. First operand 6054 states and 8626 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:02:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:20,653 INFO L93 Difference]: Finished difference Result 15855 states and 22522 transitions. [2022-11-20 11:02:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:20,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 584 [2022-11-20 11:02:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:20,695 INFO L225 Difference]: With dead ends: 15855 [2022-11-20 11:02:20,696 INFO L226 Difference]: Without dead ends: 9821 [2022-11-20 11:02:20,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:20,713 INFO L413 NwaCegarLoop]: 2439 mSDtfsCounter, 1708 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:20,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 4275 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:02:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9821 states. [2022-11-20 11:02:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9821 to 9814. [2022-11-20 11:02:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9814 states, 7457 states have (on average 1.3339144428054177) internal successors, (9947), 7576 states have internal predecessors, (9947), 1903 states have call successors, (1903), 447 states have call predecessors, (1903), 453 states have return successors, (2061), 1877 states have call predecessors, (2061), 1902 states have call successors, (2061) [2022-11-20 11:02:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9814 states to 9814 states and 13911 transitions. [2022-11-20 11:02:22,143 INFO L78 Accepts]: Start accepts. Automaton has 9814 states and 13911 transitions. Word has length 584 [2022-11-20 11:02:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:22,144 INFO L495 AbstractCegarLoop]: Abstraction has 9814 states and 13911 transitions. [2022-11-20 11:02:22,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:02:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 9814 states and 13911 transitions. [2022-11-20 11:02:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-11-20 11:02:22,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:22,189 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:22,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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)] Ended with exit code 0 [2022-11-20 11:02:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:02:22,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:22,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash -676679880, now seen corresponding path program 2 times [2022-11-20 11:02:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:02:22,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062529148] [2022-11-20 11:02:22,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:02:22,407 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 11:02:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:02:22,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:02:22,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (17)] Waiting until timeout for monitored process [2022-11-20 11:02:56,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:02:56,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:02:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 6669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:02:57,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:02:57,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5181 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 5095 trivial. 0 not checked. [2022-11-20 11:02:57,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:02:57,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:02:57,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062529148] [2022-11-20 11:02:57,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062529148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:57,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:57,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:02:57,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116150874] [2022-11-20 11:02:57,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:57,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:02:57,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:02:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:02:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:57,743 INFO L87 Difference]: Start difference. First operand 9814 states and 13911 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 11:02:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:59,235 INFO L93 Difference]: Finished difference Result 22021 states and 31246 transitions. [2022-11-20 11:02:59,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:02:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 584 [2022-11-20 11:02:59,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:59,290 INFO L225 Difference]: With dead ends: 22021 [2022-11-20 11:02:59,290 INFO L226 Difference]: Without dead ends: 13874 [2022-11-20 11:02:59,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:02:59,315 INFO L413 NwaCegarLoop]: 3303 mSDtfsCounter, 1792 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 5088 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:59,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 5088 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:02:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13874 states. [2022-11-20 11:03:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13874 to 13867. [2022-11-20 11:03:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13867 states, 10537 states have (on average 1.3328271804118819) internal successors, (14044), 10709 states have internal predecessors, (14044), 2685 states have call successors, (2685), 635 states have call predecessors, (2685), 644 states have return successors, (2905), 2646 states have call predecessors, (2905), 2684 states have call successors, (2905) [2022-11-20 11:03:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13867 states to 13867 states and 19634 transitions. [2022-11-20 11:03:01,085 INFO L78 Accepts]: Start accepts. Automaton has 13867 states and 19634 transitions. Word has length 584 [2022-11-20 11:03:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:01,085 INFO L495 AbstractCegarLoop]: Abstraction has 13867 states and 19634 transitions. [2022-11-20 11:03:01,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 11:03:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13867 states and 19634 transitions. [2022-11-20 11:03:01,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-11-20 11:03:01,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:01,162 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:01,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:01,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:01,379 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash 337624128, now seen corresponding path program 1 times [2022-11-20 11:03:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:01,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278693062] [2022-11-20 11:03:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:01,385 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 11:03:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:01,386 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:01,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (18)] Waiting until timeout for monitored process [2022-11-20 11:03:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:14,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 6669 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:03:14,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:14,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5181 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2022-11-20 11:03:14,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:14,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278693062] [2022-11-20 11:03:14,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278693062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:14,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:03:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35730686] [2022-11-20 11:03:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:14,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:14,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:14,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:14,924 INFO L87 Difference]: Start difference. First operand 13867 states and 19634 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 4 states have internal predecessors, (184), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:03:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:16,249 INFO L93 Difference]: Finished difference Result 26145 states and 37055 transitions. [2022-11-20 11:03:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 4 states have internal predecessors, (184), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 584 [2022-11-20 11:03:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:16,315 INFO L225 Difference]: With dead ends: 26145 [2022-11-20 11:03:16,315 INFO L226 Difference]: Without dead ends: 13945 [2022-11-20 11:03:16,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:16,359 INFO L413 NwaCegarLoop]: 1908 mSDtfsCounter, 8 mSDsluCounter, 5699 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7607 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:16,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7607 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:03:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2022-11-20 11:03:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13889. [2022-11-20 11:03:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 10552 states have (on average 1.3323540561031084) internal successors, (14059), 10727 states have internal predecessors, (14059), 2685 states have call successors, (2685), 635 states have call predecessors, (2685), 651 states have return successors, (2910), 2650 states have call predecessors, (2910), 2684 states have call successors, (2910) [2022-11-20 11:03:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 19654 transitions. [2022-11-20 11:03:18,364 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 19654 transitions. Word has length 584 [2022-11-20 11:03:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:18,365 INFO L495 AbstractCegarLoop]: Abstraction has 13889 states and 19654 transitions. [2022-11-20 11:03:18,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 4 states have internal predecessors, (184), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:03:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 19654 transitions. [2022-11-20 11:03:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-20 11:03:18,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:18,409 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:18,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:03:18,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:18,610 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:18,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2134274422, now seen corresponding path program 1 times [2022-11-20 11:03:18,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:18,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751786328] [2022-11-20 11:03:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:18,614 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 11:03:18,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:18,615 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:18,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 6690 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:03:27,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5180 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 5107 trivial. 0 not checked. [2022-11-20 11:03:27,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:03:27,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:03:27,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751786328] [2022-11-20 11:03:27,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751786328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:27,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:27,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426605934] [2022-11-20 11:03:27,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:27,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:27,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:03:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,621 INFO L87 Difference]: Start difference. First operand 13889 states and 19654 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:03:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:32,437 INFO L93 Difference]: Finished difference Result 33533 states and 46722 transitions. [2022-11-20 11:03:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 600 [2022-11-20 11:03:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:32,525 INFO L225 Difference]: With dead ends: 33533 [2022-11-20 11:03:32,526 INFO L226 Difference]: Without dead ends: 19664 [2022-11-20 11:03:32,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:32,576 INFO L413 NwaCegarLoop]: 2409 mSDtfsCounter, 1169 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 4047 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:32,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 4047 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:03:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19664 states. [2022-11-20 11:03:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19664 to 19655. [2022-11-20 11:03:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19655 states, 15189 states have (on average 1.2982421489235632) internal successors, (19719), 15458 states have internal predecessors, (19719), 3549 states have call successors, (3549), 889 states have call predecessors, (3549), 916 states have return successors, (3806), 3494 states have call predecessors, (3806), 3548 states have call successors, (3806) [2022-11-20 11:03:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19655 states to 19655 states and 27074 transitions. [2022-11-20 11:03:35,120 INFO L78 Accepts]: Start accepts. Automaton has 19655 states and 27074 transitions. Word has length 600 [2022-11-20 11:03:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:35,121 INFO L495 AbstractCegarLoop]: Abstraction has 19655 states and 27074 transitions. [2022-11-20 11:03:35,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 2 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:03:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 19655 states and 27074 transitions. [2022-11-20 11:03:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-20 11:03:35,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:35,187 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:03:35,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:35,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:35,403 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 208652848, now seen corresponding path program 2 times [2022-11-20 11:03:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:03:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088287918] [2022-11-20 11:03:35,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:03:35,408 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 11:03:35,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:03:35,409 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:03:35,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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)] Waiting until timeout for monitored process [2022-11-20 11:04:09,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:04:09,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:04:09,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 6690 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:04:09,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5180 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 5107 trivial. 0 not checked. [2022-11-20 11:04:10,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:04:10,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:10,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088287918] [2022-11-20 11:04:10,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088287918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:10,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:10,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:04:10,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220712614] [2022-11-20 11:04:10,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:10,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:04:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:10,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:04:10,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:04:10,790 INFO L87 Difference]: Start difference. First operand 19655 states and 27074 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 11:04:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:16,685 INFO L93 Difference]: Finished difference Result 49194 states and 67979 transitions. [2022-11-20 11:04:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:04:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 600 [2022-11-20 11:04:16,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:16,774 INFO L225 Difference]: With dead ends: 49194 [2022-11-20 11:04:16,774 INFO L226 Difference]: Without dead ends: 30041 [2022-11-20 11:04:16,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:04:16,827 INFO L413 NwaCegarLoop]: 2692 mSDtfsCounter, 1533 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:16,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 4310 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 11:04:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30041 states. [2022-11-20 11:04:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30041 to 29998. [2022-11-20 11:04:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29998 states, 23357 states have (on average 1.2828702316222118) internal successors, (29964), 23775 states have internal predecessors, (29964), 5171 states have call successors, (5171), 1427 states have call predecessors, (5171), 1469 states have return successors, (5506), 5085 states have call predecessors, (5506), 5170 states have call successors, (5506) [2022-11-20 11:04:19,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29998 states to 29998 states and 40641 transitions. [2022-11-20 11:04:19,803 INFO L78 Accepts]: Start accepts. Automaton has 29998 states and 40641 transitions. Word has length 600 [2022-11-20 11:04:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:19,804 INFO L495 AbstractCegarLoop]: Abstraction has 29998 states and 40641 transitions. [2022-11-20 11:04:19,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 3 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-20 11:04:19,805 INFO L276 IsEmpty]: Start isEmpty. Operand 29998 states and 40641 transitions. [2022-11-20 11:04:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-20 11:04:19,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:19,919 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 16, 16, 12, 12, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:04:20,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:20,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:04:20,135 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1198053680, now seen corresponding path program 1 times [2022-11-20 11:04:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:04:20,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774789920] [2022-11-20 11:04:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:20,138 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 11:04:20,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:04:20,139 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:04:20,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (21)] Waiting until timeout for monitored process [2022-11-20 11:04:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 6690 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:04:33,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:04:34,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5180 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2022-11-20 11:04:34,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:04:34,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:04:34,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774789920] [2022-11-20 11:04:34,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774789920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:34,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:34,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:04:34,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072860897] [2022-11-20 11:04:34,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:34,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:04:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:04:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:04:34,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:04:34,100 INFO L87 Difference]: Start difference. First operand 29998 states and 40641 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:04:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:36,327 INFO L93 Difference]: Finished difference Result 49126 states and 66621 transitions. [2022-11-20 11:04:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:04:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 600 [2022-11-20 11:04:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:36,333 INFO L225 Difference]: With dead ends: 49126 [2022-11-20 11:04:36,333 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:04:36,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:04:36,414 INFO L413 NwaCegarLoop]: 1899 mSDtfsCounter, 4 mSDsluCounter, 5678 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7577 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:36,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7577 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:04:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:04:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:04:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:04:36,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 600 [2022-11-20 11:04:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:36,421 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:04:36,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 4 states have internal predecessors, (200), 2 states have call successors, (54), 2 states have call predecessors, (54), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-20 11:04:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:04:36,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:04:36,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:04:36,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:04:36,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d88f39fb-6839-49ed-93e4-a84fce515900/bin/uautomizer-ug76WZFUDN/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 11:04:36,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:07:29,688 WARN L233 SmtUtils]: Spent 2.87m on a formula simplification. DAG size of input: 1768 DAG size of output: 1764 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-11-20 11:10:51,649 WARN L233 SmtUtils]: Spent 3.24m on a formula simplification. DAG size of input: 1871 DAG size of output: 1867 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)