./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.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_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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_0a349e0a-ddab-4285-b6fa-031b72159e32/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 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 --- 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 10:46:59,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:46:59,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:46:59,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:46:59,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:46:59,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:46:59,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:46:59,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:46:59,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:46:59,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:46:59,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:46:59,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:46:59,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:46:59,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:46:59,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:46:59,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:46:59,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:46:59,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:46:59,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:46:59,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:46:59,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:46:59,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:46:59,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:46:59,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:46:59,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:46:59,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:46:59,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:46:59,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:46:59,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:46:59,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:46:59,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:46:59,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:46:59,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:46:59,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:46:59,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:46:59,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:46:59,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:46:59,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:46:59,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:46:59,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:46:59,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:46:59,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:46:59,844 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:46:59,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:46:59,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:46:59,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:46:59,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:46:59,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:46:59,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:46:59,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:46:59,853 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:46:59,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:46:59,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:46:59,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:46:59,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:46:59,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:46:59,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:46:59,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:46:59,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:46:59,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:46:59,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:46:59,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:46:59,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:46:59,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:46:59,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:46:59,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:46:59,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:46:59,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:46:59,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:46:59,857 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:46:59,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:46:59,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:46:59,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 [2022-11-20 10:47:00,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:47:00,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:47:00,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:47:00,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:47:00,179 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:47:00,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 10:47:03,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:47:04,011 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:47:04,012 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 10:47:04,065 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data/c2e9c0c58/1af5150ce38942bb837665646e709e5e/FLAGbfa3e9119 [2022-11-20 10:47:04,084 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data/c2e9c0c58/1af5150ce38942bb837665646e709e5e [2022-11-20 10:47:04,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:47:04,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:47:04,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:04,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:47:04,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:47:04,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:04" (1/1) ... [2022-11-20 10:47:04,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211a1337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:04, skipping insertion in model container [2022-11-20 10:47:04,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:04" (1/1) ... [2022-11-20 10:47:04,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:47:04,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:47:05,130 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:727) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2061) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 10:47:05,139 INFO L158 Benchmark]: Toolchain (without parser) took 1047.60ms. Allocated memory is still 172.0MB. Free memory was 125.2MB in the beginning and 121.4MB in the end (delta: 3.8MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2022-11-20 10:47:05,140 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:47:05,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1045.49ms. Allocated memory is still 172.0MB. Free memory was 124.6MB in the beginning and 121.4MB in the end (delta: 3.2MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2022-11-20 10:47:05,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1045.49ms. Allocated memory is still 172.0MB. Free memory was 124.6MB in the beginning and 121.4MB in the end (delta: 3.2MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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_0a349e0a-ddab-4285-b6fa-031b72159e32/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 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 --- 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 10:47:07,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:47:07,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:47:07,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:47:07,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:47:07,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:47:07,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:47:07,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:47:07,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:47:07,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:47:07,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:47:07,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:47:07,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:47:07,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:47:07,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:47:07,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:47:07,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:47:07,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:47:07,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:47:07,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:47:07,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:47:07,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:47:07,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:47:07,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:47:07,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:47:07,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:47:07,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:47:07,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:47:07,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:47:07,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:47:07,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:47:07,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:47:07,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:47:07,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:47:07,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:47:07,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:47:07,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:47:07,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:47:07,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:47:07,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:47:07,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:47:07,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:47:07,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:47:07,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:47:07,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:47:07,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:47:07,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:47:07,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:47:07,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:47:07,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:47:07,565 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:47:07,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:47:07,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:47:07,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:47:07,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:47:07,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:47:07,567 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:47:07,567 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:47:07,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:47:07,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:47:07,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:47:07,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:47:07,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:47:07,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:47:07,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:47:07,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:47:07,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:47:07,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:47:07,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:47:07,570 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:47:07,570 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:47:07,571 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:47:07,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:47:07,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:47:07,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:47:07,572 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_0a349e0a-ddab-4285-b6fa-031b72159e32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3151b52776d19e2fb44a194d473cc3c38f1eb2b68210144e38eb8a78a9b4d4f9 [2022-11-20 10:47:07,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:47:08,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:47:08,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:47:08,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:47:08,022 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:47:08,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 10:47:11,148 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:47:11,870 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:47:11,870 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 10:47:11,931 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data/4f86642e7/1dae1239305641e499eef6640d3317f4/FLAGc3ba500da [2022-11-20 10:47:11,963 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/data/4f86642e7/1dae1239305641e499eef6640d3317f4 [2022-11-20 10:47:11,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:47:11,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:47:11,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:11,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:47:11,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:47:11,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:11" (1/1) ... [2022-11-20 10:47:11,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e1e5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:11, skipping insertion in model container [2022-11-20 10:47:11,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:47:11" (1/1) ... [2022-11-20 10:47:11,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:47:12,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:47:15,386 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2022-11-20 10:47:15,391 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2022-11-20 10:47:15,397 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2022-11-20 10:47:15,398 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2022-11-20 10:47:15,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:15,532 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 10:47:15,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:47:16,026 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2022-11-20 10:47:16,027 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2022-11-20 10:47:16,027 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2022-11-20 10:47:16,028 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2022-11-20 10:47:16,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:16,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:47:16,722 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373299,373312] [2022-11-20 10:47:16,722 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373446,373459] [2022-11-20 10:47:16,727 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373585,373598] [2022-11-20 10:47:16,728 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_0a349e0a-ddab-4285-b6fa-031b72159e32/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i[373743,373756] [2022-11-20 10:47:16,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:47:17,041 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:47:17,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17 WrapperNode [2022-11-20 10:47:17,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:47:17,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:47:17,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:47:17,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:47:17,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,348 INFO L138 Inliner]: procedures = 483, calls = 2637, calls flagged for inlining = 277, calls inlined = 249, statements flattened = 5622 [2022-11-20 10:47:17,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:47:17,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:47:17,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:47:17,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:47:17,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:47:17,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:47:17,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:47:17,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:47:17,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (1/1) ... [2022-11-20 10:47:17,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:47:17,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:47:17,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:47:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:47:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-20 10:47:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-20 10:47:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 10:47:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 10:47:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-20 10:47:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-20 10:47:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-20 10:47:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-20 10:47:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 10:47:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 10:47:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-20 10:47:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-20 10:47:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure free_tbufs [2022-11-20 10:47:17,850 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tbufs [2022-11-20 10:47:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-20 10:47:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-20 10:47:17,851 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-20 10:47:17,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-20 10:47:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-20 10:47:17,852 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-20 10:47:17,852 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-20 10:47:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-20 10:47:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-20 10:47:17,853 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-20 10:47:17,853 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_poll [2022-11-20 10:47:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_poll [2022-11-20 10:47:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-20 10:47:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-20 10:47:17,854 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-20 10:47:17,854 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-20 10:47:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 10:47:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-11-20 10:47:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_low [2022-11-20 10:47:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_low [2022-11-20 10:47:17,855 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-20 10:47:17,855 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-20 10:47:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-20 10:47:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-20 10:47:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-20 10:47:17,856 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-20 10:47:17,856 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-20 10:47:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-20 10:47:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-20 10:47:17,857 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-20 10:47:17,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-20 10:47:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-20 10:47:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-20 10:47:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-20 10:47:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:47:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:47:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-20 10:47:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-20 10:47:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-20 10:47:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-20 10:47:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit [2022-11-20 10:47:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit [2022-11-20 10:47:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-20 10:47:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-20 10:47:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-20 10:47:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-20 10:47:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-20 10:47:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-20 10:47:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_rbufs [2022-11-20 10:47:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_rbufs [2022-11-20 10:47:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-20 10:47:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-20 10:47:17,862 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-20 10:47:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-20 10:47:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_interrupt [2022-11-20 10:47:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_interrupt [2022-11-20 10:47:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-20 10:47:17,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-20 10:47:17,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-20 10:47:17,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-20 10:47:17,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-20 10:47:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-20 10:47:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_disable [2022-11-20 10:47:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_disable [2022-11-20 10:47:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-20 10:47:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-20 10:47:17,865 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-20 10:47:17,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-20 10:47:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-20 10:47:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-20 10:47:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_carrier [2022-11-20 10:47:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_carrier [2022-11-20 10:47:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_shutdown [2022-11-20 10:47:17,866 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_shutdown [2022-11-20 10:47:17,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:47:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-20 10:47:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-20 10:47:17,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-20 10:47:17,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-20 10:47:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-20 10:47:17,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-20 10:47:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-20 10:47:17,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-20 10:47:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:47:17,868 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_nway_reset [2022-11-20 10:47:17,868 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_nway_reset [2022-11-20 10:47:17,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-20 10:47:17,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-20 10:47:17,871 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-20 10:47:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-20 10:47:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:47:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 10:47:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-20 10:47:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-20 10:47:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:47:17,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 10:47:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-20 10:47:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-20 10:47:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_rx_mode [2022-11-20 10:47:17,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_rx_mode [2022-11-20 10:47:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_rx_crc_and_missed_errord [2022-11-20 10:47:17,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_rx_crc_and_missed_errord [2022-11-20 10:47:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-20 10:47:17,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-20 10:47:17,884 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-20 10:47:17,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-20 10:47:17,885 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-20 10:47:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-20 10:47:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 10:47:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 10:47:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-20 10:47:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-20 10:47:17,886 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-20 10:47:17,886 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-20 10:47:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-20 10:47:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-20 10:47:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_power_init [2022-11-20 10:47:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_power_init [2022-11-20 10:47:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_tx_timeout [2022-11-20 10:47:17,887 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_tx_timeout [2022-11-20 10:47:17,887 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-20 10:47:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-20 10:47:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:47:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:47:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-20 10:47:17,888 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-20 10:47:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-20 10:47:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-20 10:47:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-20 10:47:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-20 10:47:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:47:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-20 10:47:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 10:47:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 10:47:17,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 10:47:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-20 10:47:17,890 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_chip_reset [2022-11-20 10:47:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_chip_reset [2022-11-20 10:47:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 10:47:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 10:47:17,891 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-20 10:47:17,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-20 10:47:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 10:47:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 10:47:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_cam_mask [2022-11-20 10:47:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_cam_mask [2022-11-20 10:47:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2022-11-20 10:47:17,892 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2022-11-20 10:47:17,892 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-20 10:47:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-20 10:47:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_remove_one [2022-11-20 10:47:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_remove_one [2022-11-20 10:47:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-20 10:47:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-20 10:47:17,893 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-20 10:47:17,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-20 10:47:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_close [2022-11-20 10:47:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_close [2022-11-20 10:47:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-20 10:47:17,894 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-20 10:47:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:47:17,894 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 10:47:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 10:47:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-20 10:47:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-20 10:47:17,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-20 10:47:17,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-20 10:47:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:47:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_check_media [2022-11-20 10:47:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_check_media [2022-11-20 10:47:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-20 10:47:17,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rhine_cleanup_14_2 [2022-11-20 10:47:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-20 10:47:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-20 10:47:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-20 10:47:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 10:47:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:47:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure free_rbufs [2022-11-20 10:47:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure free_rbufs [2022-11-20 10:47:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_get_events [2022-11-20 10:47:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_get_events [2022-11-20 10:47:17,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-20 10:47:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-20 10:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mmio [2022-11-20 10:47:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mmio [2022-11-20 10:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_set_vlan_cam_mask [2022-11-20 10:47:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_set_vlan_cam_mask [2022-11-20 10:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-20 10:47:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-20 10:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 10:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 10:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-20 10:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-20 10:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-20 10:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-20 10:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-20 10:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-20 10:47:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-20 10:47:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-20 10:47:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-20 10:47:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-20 10:47:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-20 10:47:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-20 10:47:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-20 10:47:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-20 10:47:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_disable_linkmon [2022-11-20 10:47:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_disable_linkmon [2022-11-20 10:47:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 10:47:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-11-20 10:47:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_ack_events [2022-11-20 10:47:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_ack_events [2022-11-20 10:47:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-20 10:47:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-20 10:47:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_resume [2022-11-20 10:47:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_resume [2022-11-20 10:47:17,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 10:47:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-20 10:47:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-20 10:47:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 10:47:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 10:47:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-20 10:47:17,908 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-20 10:47:17,908 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-20 10:47:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-20 10:47:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_wait_bit_high [2022-11-20 10:47:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_wait_bit_high [2022-11-20 10:47:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_irq_disable [2022-11-20 10:47:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_irq_disable [2022-11-20 10:47:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_task_enable [2022-11-20 10:47:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_task_enable [2022-11-20 10:47:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_tbufs [2022-11-20 10:47:17,910 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_tbufs [2022-11-20 10:47:17,910 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-20 10:47:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-20 10:47:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-20 10:47:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-20 10:47:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-20 10:47:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-20 10:47:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-20 10:47:17,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-20 10:47:17,911 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_enable_linkmon [2022-11-20 10:47:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_enable_linkmon [2022-11-20 10:47:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_update_vcam [2022-11-20 10:47:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_update_vcam [2022-11-20 10:47:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-20 10:47:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-20 10:47:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-20 10:47:17,912 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-20 10:47:17,912 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_suspend [2022-11-20 10:47:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_suspend [2022-11-20 10:47:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure rhine_open [2022-11-20 10:47:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure rhine_open [2022-11-20 10:47:17,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-20 10:47:17,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-20 10:47:18,916 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:47:18,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:47:19,726 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 10:58:04,070 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-20 10:58:04,167 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:58:04,184 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:58:04,184 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:58:04,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:58:04 BoogieIcfgContainer [2022-11-20 10:58:04,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:58:04,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:58:04,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:58:04,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:58:04,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:47:11" (1/3) ... [2022-11-20 10:58:04,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfac4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:58:04, skipping insertion in model container [2022-11-20 10:58:04,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:47:17" (2/3) ... [2022-11-20 10:58:04,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfac4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:58:04, skipping insertion in model container [2022-11-20 10:58:04,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:58:04" (3/3) ... [2022-11-20 10:58:04,197 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-via-via-rhine.cil.i [2022-11-20 10:58:04,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:58:04,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:58:04,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:58:04,308 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;@61cf2e44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:58:04,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:58:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 2187 states, 1487 states have (on average 1.2750504371217215) internal successors, (1896), 1535 states have internal predecessors, (1896), 578 states have call successors, (578), 122 states have call predecessors, (578), 121 states have return successors, (569), 556 states have call predecessors, (569), 569 states have call successors, (569) [2022-11-20 10:58:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-20 10:58:04,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:04,344 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:04,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:04,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:04,349 INFO L85 PathProgramCache]: Analyzing trace with hash 202809919, now seen corresponding path program 1 times [2022-11-20 10:58:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:04,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614874762] [2022-11-20 10:58:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:04,370 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 10:58:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:04,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:04,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:09,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 4330 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:58:09,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 10:58:09,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:09,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:09,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614874762] [2022-11-20 10:58:09,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614874762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:09,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:09,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:58:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202544621] [2022-11-20 10:58:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:58:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:58:09,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:09,663 INFO L87 Difference]: Start difference. First operand has 2187 states, 1487 states have (on average 1.2750504371217215) internal successors, (1896), 1535 states have internal predecessors, (1896), 578 states have call successors, (578), 122 states have call predecessors, (578), 121 states have return successors, (569), 556 states have call predecessors, (569), 569 states have call successors, (569) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 10:58:12,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:13,000 INFO L93 Difference]: Finished difference Result 6343 states and 8954 transitions. [2022-11-20 10:58:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:58:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 183 [2022-11-20 10:58:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:13,057 INFO L225 Difference]: With dead ends: 6343 [2022-11-20 10:58:13,057 INFO L226 Difference]: Without dead ends: 4175 [2022-11-20 10:58:13,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 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 10:58:13,088 INFO L413 NwaCegarLoop]: 3524 mSDtfsCounter, 2845 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:13,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2845 Valid, 6440 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:58:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2022-11-20 10:58:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4173. [2022-11-20 10:58:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4173 states, 2832 states have (on average 1.259180790960452) internal successors, (3566), 2925 states have internal predecessors, (3566), 1100 states have call successors, (1100), 240 states have call predecessors, (1100), 239 states have return successors, (1097), 1071 states have call predecessors, (1097), 1097 states have call successors, (1097) [2022-11-20 10:58:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 5763 transitions. [2022-11-20 10:58:13,450 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 5763 transitions. Word has length 183 [2022-11-20 10:58:13,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:13,453 INFO L495 AbstractCegarLoop]: Abstraction has 4173 states and 5763 transitions. [2022-11-20 10:58:13,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 10:58:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 5763 transitions. [2022-11-20 10:58:13,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-20 10:58:13,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:13,475 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:58:13,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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)] Ended with exit code 0 [2022-11-20 10:58:13,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:13,689 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:13,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2079420108, now seen corresponding path program 1 times [2022-11-20 10:58:13,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:13,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2132471038] [2022-11-20 10:58:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:13,693 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 10:58:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:13,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:13,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:18,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 4450 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:58:18,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-11-20 10:58:18,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:18,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:18,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2132471038] [2022-11-20 10:58:18,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2132471038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:18,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:18,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:58:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355581326] [2022-11-20 10:58:18,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:58:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:58:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:18,968 INFO L87 Difference]: Start difference. First operand 4173 states and 5763 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 10:58:21,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:22,696 INFO L93 Difference]: Finished difference Result 9833 states and 13539 transitions. [2022-11-20 10:58:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:58:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 204 [2022-11-20 10:58:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:22,731 INFO L225 Difference]: With dead ends: 9833 [2022-11-20 10:58:22,732 INFO L226 Difference]: Without dead ends: 5693 [2022-11-20 10:58:22,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 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 10:58:22,750 INFO L413 NwaCegarLoop]: 3439 mSDtfsCounter, 2444 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 6331 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:22,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 6331 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 10:58:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2022-11-20 10:58:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5684. [2022-11-20 10:58:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 3857 states have (on average 1.2514907959554058) internal successors, (4827), 3983 states have internal predecessors, (4827), 1480 states have call successors, (1480), 347 states have call predecessors, (1480), 345 states have return successors, (1477), 1435 states have call predecessors, (1477), 1477 states have call successors, (1477) [2022-11-20 10:58:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 7784 transitions. [2022-11-20 10:58:23,076 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 7784 transitions. Word has length 204 [2022-11-20 10:58:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:23,077 INFO L495 AbstractCegarLoop]: Abstraction has 5684 states and 7784 transitions. [2022-11-20 10:58:23,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 10:58:23,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 7784 transitions. [2022-11-20 10:58:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-20 10:58:23,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:23,086 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 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] [2022-11-20 10:58:23,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:23,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1086988570, now seen corresponding path program 1 times [2022-11-20 10:58:23,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:23,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187426331] [2022-11-20 10:58:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:23,304 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 10:58:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:23,305 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:23,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:28,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 4393 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:58:28,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-11-20 10:58:28,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:28,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187426331] [2022-11-20 10:58:28,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187426331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:28,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:28,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:58:28,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463165549] [2022-11-20 10:58:28,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:28,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:58:28,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:28,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:58:28,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:28,496 INFO L87 Difference]: Start difference. First operand 5684 states and 7784 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 10:58:30,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:32,242 INFO L93 Difference]: Finished difference Result 15015 states and 20568 transitions. [2022-11-20 10:58:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:58:32,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 215 [2022-11-20 10:58:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:32,298 INFO L225 Difference]: With dead ends: 15015 [2022-11-20 10:58:32,298 INFO L226 Difference]: Without dead ends: 9364 [2022-11-20 10:58:32,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 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 10:58:32,328 INFO L413 NwaCegarLoop]: 3496 mSDtfsCounter, 2783 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 6408 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:32,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2783 Valid, 6408 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:58:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9364 states. [2022-11-20 10:58:32,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9364 to 9351. [2022-11-20 10:58:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9351 states, 6350 states have (on average 1.2496062992125985) internal successors, (7935), 6569 states have internal predecessors, (7935), 2429 states have call successors, (2429), 573 states have call predecessors, (2429), 570 states have return successors, (2426), 2347 states have call predecessors, (2426), 2426 states have call successors, (2426) [2022-11-20 10:58:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9351 states to 9351 states and 12790 transitions. [2022-11-20 10:58:32,927 INFO L78 Accepts]: Start accepts. Automaton has 9351 states and 12790 transitions. Word has length 215 [2022-11-20 10:58:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:32,929 INFO L495 AbstractCegarLoop]: Abstraction has 9351 states and 12790 transitions. [2022-11-20 10:58:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 10:58:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 9351 states and 12790 transitions. [2022-11-20 10:58:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 10:58:32,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:32,942 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2022-11-20 10:58:33,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:33,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2049765473, now seen corresponding path program 1 times [2022-11-20 10:58:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:33,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395818871] [2022-11-20 10:58:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:33,161 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 10:58:33,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:33,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:33,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:38,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 4464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:58:38,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2022-11-20 10:58:38,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:38,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:38,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395818871] [2022-11-20 10:58:38,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395818871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:38,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:38,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:58:38,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571998493] [2022-11-20 10:58:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:38,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:58:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:58:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:58:38,704 INFO L87 Difference]: Start difference. First operand 9351 states and 12790 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 10:58:41,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:58:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:42,878 INFO L93 Difference]: Finished difference Result 24416 states and 33438 transitions. [2022-11-20 10:58:42,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:58:42,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 244 [2022-11-20 10:58:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:43,009 INFO L225 Difference]: With dead ends: 24416 [2022-11-20 10:58:43,009 INFO L226 Difference]: Without dead ends: 16741 [2022-11-20 10:58:43,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 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 10:58:43,045 INFO L413 NwaCegarLoop]: 5448 mSDtfsCounter, 2797 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2797 SdHoareTripleChecker+Valid, 8372 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:43,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2797 Valid, 8372 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:58:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16741 states. [2022-11-20 10:58:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16741 to 16739. [2022-11-20 10:58:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16739 states, 11374 states have (on average 1.2501318797256902) internal successors, (14219), 11757 states have internal predecessors, (14219), 4340 states have call successors, (4340), 1026 states have call predecessors, (4340), 1023 states have return successors, (4337), 4208 states have call predecessors, (4337), 4337 states have call successors, (4337) [2022-11-20 10:58:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16739 states to 16739 states and 22896 transitions. [2022-11-20 10:58:44,218 INFO L78 Accepts]: Start accepts. Automaton has 16739 states and 22896 transitions. Word has length 244 [2022-11-20 10:58:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:44,219 INFO L495 AbstractCegarLoop]: Abstraction has 16739 states and 22896 transitions. [2022-11-20 10:58:44,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 10:58:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 16739 states and 22896 transitions. [2022-11-20 10:58:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-20 10:58:44,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:44,235 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 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] [2022-11-20 10:58:44,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:44,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2111805087, now seen corresponding path program 1 times [2022-11-20 10:58:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:44,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121428394] [2022-11-20 10:58:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:44,464 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 10:58:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:44,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:44,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:49,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 4464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:58:49,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2022-11-20 10:58:53,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:58:53,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:58:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121428394] [2022-11-20 10:58:53,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121428394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:58:53,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:58:53,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:58:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614689591] [2022-11-20 10:58:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:58:53,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:58:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:58:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:58:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:58:53,795 INFO L87 Difference]: Start difference. First operand 16739 states and 22896 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-20 10:58:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:55,182 INFO L93 Difference]: Finished difference Result 16739 states and 22896 transitions. [2022-11-20 10:58:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:58:55,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 244 [2022-11-20 10:58:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:55,261 INFO L225 Difference]: With dead ends: 16739 [2022-11-20 10:58:55,261 INFO L226 Difference]: Without dead ends: 16684 [2022-11-20 10:58:55,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:58:55,276 INFO L413 NwaCegarLoop]: 2953 mSDtfsCounter, 2847 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 5906 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:55,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2847 Valid, 5906 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:58:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16684 states. [2022-11-20 10:58:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16684 to 16684. [2022-11-20 10:58:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16684 states, 11349 states have (on average 1.2496255176667548) internal successors, (14182), 11720 states have internal predecessors, (14182), 4313 states have call successors, (4313), 1021 states have call predecessors, (4313), 1021 states have return successors, (4313), 4195 states have call predecessors, (4313), 4313 states have call successors, (4313) [2022-11-20 10:58:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16684 states to 16684 states and 22808 transitions. [2022-11-20 10:58:56,509 INFO L78 Accepts]: Start accepts. Automaton has 16684 states and 22808 transitions. Word has length 244 [2022-11-20 10:58:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:56,513 INFO L495 AbstractCegarLoop]: Abstraction has 16684 states and 22808 transitions. [2022-11-20 10:58:56,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-20 10:58:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 16684 states and 22808 transitions. [2022-11-20 10:58:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-20 10:58:56,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:56,549 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 5, 5, 5, 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] [2022-11-20 10:58:56,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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)] Ended with exit code 0 [2022-11-20 10:58:56,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:56,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2022672977, now seen corresponding path program 1 times [2022-11-20 10:58:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:58:56,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241608306] [2022-11-20 10:58:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:56,775 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 10:58:56,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:58:56,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:58:56,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:02,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 4601 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:59:02,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2022-11-20 10:59:03,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:03,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:59:03,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241608306] [2022-11-20 10:59:03,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241608306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:03,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:03,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:59:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514761254] [2022-11-20 10:59:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:59:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:59:03,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:59:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:59:03,252 INFO L87 Difference]: Start difference. First operand 16684 states and 22808 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 10:59:05,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:07,368 INFO L93 Difference]: Finished difference Result 38590 states and 52766 transitions. [2022-11-20 10:59:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:59:07,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 273 [2022-11-20 10:59:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:07,477 INFO L225 Difference]: With dead ends: 38590 [2022-11-20 10:59:07,477 INFO L226 Difference]: Without dead ends: 23582 [2022-11-20 10:59:07,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 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 10:59:07,540 INFO L413 NwaCegarLoop]: 5211 mSDtfsCounter, 2399 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 8073 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:07,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 8073 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 10:59:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23582 states. [2022-11-20 10:59:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23582 to 23578. [2022-11-20 10:59:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23578 states, 16035 states have (on average 1.2478952291861554) internal successors, (20010), 16558 states have internal predecessors, (20010), 6081 states have call successors, (6081), 1461 states have call predecessors, (6081), 1461 states have return successors, (6081), 5911 states have call predecessors, (6081), 6081 states have call successors, (6081) [2022-11-20 10:59:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23578 states to 23578 states and 32172 transitions. [2022-11-20 10:59:09,444 INFO L78 Accepts]: Start accepts. Automaton has 23578 states and 32172 transitions. Word has length 273 [2022-11-20 10:59:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:09,445 INFO L495 AbstractCegarLoop]: Abstraction has 23578 states and 32172 transitions. [2022-11-20 10:59:09,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-20 10:59:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 23578 states and 32172 transitions. [2022-11-20 10:59:09,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-11-20 10:59:09,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:09,496 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 14, 6, 6, 6, 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] [2022-11-20 10:59:09,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:09,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:09,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:59:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash -778318711, now seen corresponding path program 1 times [2022-11-20 10:59:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:59:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234411155] [2022-11-20 10:59:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:09,717 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 10:59:09,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:59:09,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:09,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:15,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 4557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 10:59:15,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2022-11-20 10:59:15,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:59:15,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:59:15,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234411155] [2022-11-20 10:59:15,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234411155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:59:15,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:59:15,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:59:15,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932424160] [2022-11-20 10:59:15,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:59:15,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:59:15,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:59:15,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:59:15,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:59:15,607 INFO L87 Difference]: Start difference. First operand 23578 states and 32172 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 10:59:18,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:20,246 INFO L93 Difference]: Finished difference Result 56267 states and 76814 transitions. [2022-11-20 10:59:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:59:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 298 [2022-11-20 10:59:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:20,373 INFO L225 Difference]: With dead ends: 56267 [2022-11-20 10:59:20,373 INFO L226 Difference]: Without dead ends: 32666 [2022-11-20 10:59:20,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 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 10:59:20,637 INFO L413 NwaCegarLoop]: 5726 mSDtfsCounter, 2793 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 8628 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:20,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2793 Valid, 8628 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:59:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32666 states. [2022-11-20 10:59:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32666 to 32664. [2022-11-20 10:59:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32664 states, 22198 states have (on average 1.2484908550319849) internal successors, (27714), 22922 states have internal predecessors, (27714), 8439 states have call successors, (8439), 2026 states have call predecessors, (8439), 2026 states have return successors, (8439), 8207 states have call predecessors, (8439), 8439 states have call successors, (8439) [2022-11-20 10:59:22,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32664 states to 32664 states and 44592 transitions. [2022-11-20 10:59:22,783 INFO L78 Accepts]: Start accepts. Automaton has 32664 states and 44592 transitions. Word has length 298 [2022-11-20 10:59:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:22,784 INFO L495 AbstractCegarLoop]: Abstraction has 32664 states and 44592 transitions. [2022-11-20 10:59:22,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-20 10:59:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 32664 states and 44592 transitions. [2022-11-20 10:59:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-20 10:59:22,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:22,978 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:59:23,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:23,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:23,199 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:59:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1073054635, now seen corresponding path program 1 times [2022-11-20 10:59:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:59:23,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949391767] [2022-11-20 10:59:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:23,205 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 10:59:23,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:59:23,206 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:23,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 10:59:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:29,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 4595 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:59:29,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 360 proven. 3 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2022-11-20 10:59:32,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:59:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 48 proven. 24 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2022-11-20 10:59:35,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:59:35,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949391767] [2022-11-20 10:59:35,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949391767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:59:35,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:59:35,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-11-20 10:59:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841529026] [2022-11-20 10:59:35,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:59:35,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:59:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:59:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:59:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:59:35,895 INFO L87 Difference]: Start difference. First operand 32664 states and 44592 transitions. Second operand has 22 states, 21 states have (on average 7.0) internal successors, (147), 20 states have internal predecessors, (147), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-11-20 10:59:38,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 10:59:43,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:01:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:29,389 INFO L93 Difference]: Finished difference Result 83596 states and 114122 transitions. [2022-11-20 11:01:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:01:29,390 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 7.0) internal successors, (147), 20 states have internal predecessors, (147), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 324 [2022-11-20 11:01:29,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:29,599 INFO L225 Difference]: With dead ends: 83596 [2022-11-20 11:01:29,599 INFO L226 Difference]: Without dead ends: 50885 [2022-11-20 11:01:29,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 11:01:29,907 INFO L413 NwaCegarLoop]: 5968 mSDtfsCounter, 9140 mSDsluCounter, 97730 mSDsCounter, 0 mSdLazyCounter, 10402 mSolverCounterSat, 1667 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9383 SdHoareTripleChecker+Valid, 103698 SdHoareTripleChecker+Invalid, 12072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1667 IncrementalHoareTripleChecker+Valid, 10402 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:29,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9383 Valid, 103698 Invalid, 12072 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1667 Valid, 10402 Invalid, 3 Unknown, 0 Unchecked, 106.3s Time] [2022-11-20 11:01:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50885 states. [2022-11-20 11:01:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50885 to 32708. [2022-11-20 11:01:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32708 states, 22229 states have (on average 1.2481893022628099) internal successors, (27746), 22953 states have internal predecessors, (27746), 8441 states have call successors, (8441), 2037 states have call predecessors, (8441), 2037 states have return successors, (8441), 8209 states have call predecessors, (8441), 8441 states have call successors, (8441) [2022-11-20 11:01:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32708 states to 32708 states and 44628 transitions. [2022-11-20 11:01:32,625 INFO L78 Accepts]: Start accepts. Automaton has 32708 states and 44628 transitions. Word has length 324 [2022-11-20 11:01:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:32,627 INFO L495 AbstractCegarLoop]: Abstraction has 32708 states and 44628 transitions. [2022-11-20 11:01:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 7.0) internal successors, (147), 20 states have internal predecessors, (147), 6 states have call successors, (45), 3 states have call predecessors, (45), 8 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-11-20 11:01:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 32708 states and 44628 transitions. [2022-11-20 11:01:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-11-20 11:01:32,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:32,657 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:01:32,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 11:01:32,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 11:01:32,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 181426374, now seen corresponding path program 1 times [2022-11-20 11:01:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:01:32,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383177834] [2022-11-20 11:01:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:32,876 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 11:01:32,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:01:32,878 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 11:01:32,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a349e0a-ddab-4285-b6fa-031b72159e32/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 11:01:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:38,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 4612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:01:38,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2022-11-20 11:01:39,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:01:39,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:01:39,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383177834] [2022-11-20 11:01:39,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383177834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:01:39,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:01:39,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:01:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458941631] [2022-11-20 11:01:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:01:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:01:39,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:01:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:01:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:01:39,146 INFO L87 Difference]: Start difference. First operand 32708 states and 44628 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-20 11:01:41,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []