./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:41:20,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:41:20,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:41:20,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:41:20,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:41:20,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:41:20,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:41:20,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:41:20,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:41:20,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:41:20,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:41:20,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:41:20,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:41:20,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:41:20,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:41:20,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:41:20,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:41:20,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:41:20,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:41:20,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:41:20,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:41:20,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:41:20,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:41:20,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:41:20,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:41:20,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:41:20,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:41:20,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:41:20,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:41:20,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:41:20,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:41:20,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:41:20,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:41:20,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:41:20,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:41:20,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:41:20,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:41:20,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:41:20,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:41:20,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:41:20,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:41:20,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:41:20,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:41:20,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:41:20,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:41:20,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:41:20,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:41:20,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:41:20,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:41:20,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:41:20,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:41:20,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:20,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:41:20,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:41:20,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:41:20,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:41:20,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:41:20,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:41:20,779 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-16 03:41:20,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:41:20,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:41:20,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:41:20,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:41:20,987 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:41:20,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-16 03:41:21,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d026a09/f35ca1d7bcc440c8ada58aaf942286d9/FLAG3855f5895 [2021-12-16 03:41:21,735 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:41:21,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-16 03:41:21,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d026a09/f35ca1d7bcc440c8ada58aaf942286d9/FLAG3855f5895 [2021-12-16 03:41:22,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82d026a09/f35ca1d7bcc440c8ada58aaf942286d9 [2021-12-16 03:41:22,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:41:22,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:41:22,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:22,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:41:22,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:41:22,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:22" (1/1) ... [2021-12-16 03:41:22,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2515f782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:22, skipping insertion in model container [2021-12-16 03:41:22,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:41:22" (1/1) ... [2021-12-16 03:41:22,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:41:22,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:41:23,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-16 03:41:24,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:24,030 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:41:24,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-16 03:41:24,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:41:24,438 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:41:24,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24 WrapperNode [2021-12-16 03:41:24,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:41:24,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:24,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:41:24,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:41:24,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,692 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2021-12-16 03:41:24,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:41:24,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:41:24,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:41:24,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:41:24,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:41:24,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:41:24,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:41:24,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:41:24,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (1/1) ... [2021-12-16 03:41:24,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:41:24,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:41:24,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:41:24,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:41:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-16 03:41:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-16 03:41:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-16 03:41:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-16 03:41:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-16 03:41:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-16 03:41:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-16 03:41:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-16 03:41:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-16 03:41:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-16 03:41:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-16 03:41:25,026 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-16 03:41:25,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:41:25,026 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-16 03:41:25,026 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-16 03:41:25,027 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-16 03:41:25,027 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-16 03:41:25,028 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-16 03:41:25,028 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-16 03:41:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:41:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-16 03:41:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-16 03:41:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 03:41:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 03:41:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-16 03:41:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:41:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-16 03:41:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:41:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-16 03:41:25,034 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-16 03:41:25,034 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-16 03:41:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-16 03:41:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:41:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:41:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-16 03:41:25,035 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-16 03:41:25,035 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-16 03:41:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-16 03:41:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:41:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-16 03:41:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-16 03:41:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-16 03:41:25,036 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-16 03:41:25,036 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-16 03:41:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-16 03:41:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-16 03:41:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-16 03:41:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-16 03:41:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 03:41:25,037 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-16 03:41:25,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-16 03:41:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:41:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:41:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-16 03:41:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-16 03:41:25,038 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-16 03:41:25,038 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-16 03:41:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-16 03:41:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-16 03:41:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-16 03:41:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-16 03:41:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-16 03:41:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-16 03:41:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-12-16 03:41:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-12-16 03:41:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-16 03:41:25,039 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-16 03:41:25,039 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:41:25,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:41:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-16 03:41:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-16 03:41:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-16 03:41:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-16 03:41:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 03:41:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 03:41:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-16 03:41:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-16 03:41:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:41:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-16 03:41:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-16 03:41:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-16 03:41:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-16 03:41:25,042 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-16 03:41:25,042 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-16 03:41:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:41:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:41:25,043 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-16 03:41:25,043 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-16 03:41:25,667 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:41:25,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:41:29,457 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-12-16 03:41:29,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-16 03:41:29,459 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2021-12-16 03:41:31,584 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-12-16 03:41:31,584 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-12-16 03:41:31,584 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,584 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2021-12-16 03:41:31,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-12-16 03:41:31,586 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2021-12-16 03:41:32,265 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:41:32,286 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:41:32,287 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:41:32,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:32 BoogieIcfgContainer [2021-12-16 03:41:32,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:41:32,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:41:32,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:41:32,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:41:32,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:41:22" (1/3) ... [2021-12-16 03:41:32,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694db919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:32, skipping insertion in model container [2021-12-16 03:41:32,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:41:24" (2/3) ... [2021-12-16 03:41:32,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694db919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:41:32, skipping insertion in model container [2021-12-16 03:41:32,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:32" (3/3) ... [2021-12-16 03:41:32,297 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-16 03:41:32,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:41:32,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:41:32,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:41:32,362 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:41:32,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:41:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2021-12-16 03:41:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 03:41:32,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:32,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:32,410 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash -662016059, now seen corresponding path program 1 times [2021-12-16 03:41:32,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:32,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755552835] [2021-12-16 03:41:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:32,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:32,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755552835] [2021-12-16 03:41:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755552835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:32,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:32,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:32,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998573584] [2021-12-16 03:41:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:32,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:32,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:32,821 INFO L87 Difference]: Start difference. First operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:33,041 INFO L93 Difference]: Finished difference Result 4464 states and 6561 transitions. [2021-12-16 03:41:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:33,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-16 03:41:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:33,072 INFO L225 Difference]: With dead ends: 4464 [2021-12-16 03:41:33,073 INFO L226 Difference]: Without dead ends: 2228 [2021-12-16 03:41:33,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:33,095 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 3220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:33,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3220 Valid, 3230 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-12-16 03:41:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-12-16 03:41:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1542 states have (on average 1.3411154345006484) internal successors, (2068), 1585 states have internal predecessors, (2068), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-16 03:41:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3219 transitions. [2021-12-16 03:41:33,336 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3219 transitions. Word has length 16 [2021-12-16 03:41:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:33,338 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3219 transitions. [2021-12-16 03:41:33,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3219 transitions. [2021-12-16 03:41:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 03:41:33,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:33,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:33,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:41:33,340 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:33,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:33,342 INFO L85 PathProgramCache]: Analyzing trace with hash 951309113, now seen corresponding path program 1 times [2021-12-16 03:41:33,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:33,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392234903] [2021-12-16 03:41:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:33,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:33,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:33,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392234903] [2021-12-16 03:41:33,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392234903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:33,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:33,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:33,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101426396] [2021-12-16 03:41:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:33,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:33,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:33,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:33,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:33,424 INFO L87 Difference]: Start difference. First operand 2228 states and 3219 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:33,509 INFO L93 Difference]: Finished difference Result 2230 states and 3220 transitions. [2021-12-16 03:41:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-16 03:41:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:33,522 INFO L225 Difference]: With dead ends: 2230 [2021-12-16 03:41:33,523 INFO L226 Difference]: Without dead ends: 2227 [2021-12-16 03:41:33,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:33,528 INFO L933 BasicCegarLoop]: 3216 mSDtfsCounter, 3205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:33,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 3216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-12-16 03:41:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-12-16 03:41:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1542 states have (on average 1.3404669260700388) internal successors, (2067), 1584 states have internal predecessors, (2067), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-16 03:41:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3217 transitions. [2021-12-16 03:41:33,618 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3217 transitions. Word has length 17 [2021-12-16 03:41:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:33,618 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3217 transitions. [2021-12-16 03:41:33,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3217 transitions. [2021-12-16 03:41:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 03:41:33,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:33,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:33,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:41:33,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -575213240, now seen corresponding path program 1 times [2021-12-16 03:41:33,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560360430] [2021-12-16 03:41:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:33,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:33,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560360430] [2021-12-16 03:41:33,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560360430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:33,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:33,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:33,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272835319] [2021-12-16 03:41:33,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:33,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:33,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:33,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:33,674 INFO L87 Difference]: Start difference. First operand 2227 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:33,738 INFO L93 Difference]: Finished difference Result 2229 states and 3218 transitions. [2021-12-16 03:41:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:33,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-16 03:41:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:33,748 INFO L225 Difference]: With dead ends: 2229 [2021-12-16 03:41:33,748 INFO L226 Difference]: Without dead ends: 2226 [2021-12-16 03:41:33,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:33,750 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 3202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:33,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 3214 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-12-16 03:41:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2226. [2021-12-16 03:41:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1542 states have (on average 1.3398184176394292) internal successors, (2066), 1583 states have internal predecessors, (2066), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-16 03:41:33,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3215 transitions. [2021-12-16 03:41:33,873 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3215 transitions. Word has length 18 [2021-12-16 03:41:33,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:33,873 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3215 transitions. [2021-12-16 03:41:33,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3215 transitions. [2021-12-16 03:41:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 03:41:33,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:33,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:41:33,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:41:33,875 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:33,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash -652761060, now seen corresponding path program 1 times [2021-12-16 03:41:33,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:33,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647793623] [2021-12-16 03:41:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:33,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:41:33,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:33,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647793623] [2021-12-16 03:41:33,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647793623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:33,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:33,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:41:33,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515027370] [2021-12-16 03:41:33,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:33,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:41:33,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:33,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:41:33,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:33,949 INFO L87 Difference]: Start difference. First operand 2226 states and 3215 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:34,087 INFO L93 Difference]: Finished difference Result 5137 states and 7376 transitions. [2021-12-16 03:41:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:41:34,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-16 03:41:34,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:34,107 INFO L225 Difference]: With dead ends: 5137 [2021-12-16 03:41:34,108 INFO L226 Difference]: Without dead ends: 2913 [2021-12-16 03:41:34,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:41:34,119 INFO L933 BasicCegarLoop]: 3667 mSDtfsCounter, 1302 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:34,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 6466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:41:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2021-12-16 03:41:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2910. [2021-12-16 03:41:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2009 states have (on average 1.321553011448482) internal successors, (2655), 2071 states have internal predecessors, (2655), 721 states have call successors, (721), 183 states have call predecessors, (721), 179 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2021-12-16 03:41:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4107 transitions. [2021-12-16 03:41:34,233 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4107 transitions. Word has length 19 [2021-12-16 03:41:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:34,234 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4107 transitions. [2021-12-16 03:41:34,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 03:41:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4107 transitions. [2021-12-16 03:41:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 03:41:34,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:34,237 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:41:34,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:41:34,237 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1639297723, now seen corresponding path program 1 times [2021-12-16 03:41:34,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:34,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525124473] [2021-12-16 03:41:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:34,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:41:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:41:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:41:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:41:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:41:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:41:34,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:34,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525124473] [2021-12-16 03:41:34,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525124473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:34,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:34,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:41:34,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162985414] [2021-12-16 03:41:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:34,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:41:34,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:41:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:41:34,397 INFO L87 Difference]: Start difference. First operand 2910 states and 4107 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 03:41:36,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:41:40,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:41:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:44,897 INFO L93 Difference]: Finished difference Result 6358 states and 9035 transitions. [2021-12-16 03:41:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:41:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-12-16 03:41:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:44,914 INFO L225 Difference]: With dead ends: 6358 [2021-12-16 03:41:44,915 INFO L226 Difference]: Without dead ends: 3459 [2021-12-16 03:41:44,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:41:44,926 INFO L933 BasicCegarLoop]: 2766 mSDtfsCounter, 2211 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 1601 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 6130 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1601 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:44,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2507 Valid, 6130 Invalid, 5480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1601 Valid, 3877 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-12-16 03:41:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2021-12-16 03:41:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 2961. [2021-12-16 03:41:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2045 states have (on average 1.3193154034229828) internal successors, (2698), 2110 states have internal predecessors, (2698), 726 states have call successors, (726), 183 states have call predecessors, (726), 189 states have return successors, (748), 711 states have call predecessors, (748), 713 states have call successors, (748) [2021-12-16 03:41:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4172 transitions. [2021-12-16 03:41:45,098 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4172 transitions. Word has length 56 [2021-12-16 03:41:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:45,098 INFO L470 AbstractCegarLoop]: Abstraction has 2961 states and 4172 transitions. [2021-12-16 03:41:45,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 03:41:45,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4172 transitions. [2021-12-16 03:41:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 03:41:45,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:45,104 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:41:45,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:41:45,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 767818388, now seen corresponding path program 1 times [2021-12-16 03:41:45,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:45,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465539488] [2021-12-16 03:41:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:45,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:41:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:41:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:41:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:41:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:41:45,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465539488] [2021-12-16 03:41:45,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465539488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:45,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:45,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:41:45,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140669428] [2021-12-16 03:41:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:45,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:41:45,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:41:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:41:45,259 INFO L87 Difference]: Start difference. First operand 2961 states and 4172 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 03:41:47,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:41:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:50,435 INFO L93 Difference]: Finished difference Result 6026 states and 8592 transitions. [2021-12-16 03:41:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:41:50,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-12-16 03:41:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:50,451 INFO L225 Difference]: With dead ends: 6026 [2021-12-16 03:41:50,451 INFO L226 Difference]: Without dead ends: 3076 [2021-12-16 03:41:50,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:41:50,464 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 1192 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:50,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5916 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1854 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-12-16 03:41:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-12-16 03:41:50,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2965. [2021-12-16 03:41:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31591796875) internal successors, (2695), 2112 states have internal predecessors, (2695), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-12-16 03:41:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4171 transitions. [2021-12-16 03:41:50,568 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4171 transitions. Word has length 59 [2021-12-16 03:41:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:50,570 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4171 transitions. [2021-12-16 03:41:50,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 03:41:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4171 transitions. [2021-12-16 03:41:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 03:41:50,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:50,573 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:41:50,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:41:50,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1148770573, now seen corresponding path program 1 times [2021-12-16 03:41:50,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:50,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810204549] [2021-12-16 03:41:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:50,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 03:41:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 03:41:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:41:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:41:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:41:50,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:50,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810204549] [2021-12-16 03:41:50,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810204549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:50,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:50,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:41:50,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334245806] [2021-12-16 03:41:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:50,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:41:50,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:41:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:41:50,722 INFO L87 Difference]: Start difference. First operand 2965 states and 4171 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 03:41:52,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:41:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:41:55,190 INFO L93 Difference]: Finished difference Result 5045 states and 7042 transitions. [2021-12-16 03:41:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:41:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2021-12-16 03:41:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:41:55,202 INFO L225 Difference]: With dead ends: 5045 [2021-12-16 03:41:55,203 INFO L226 Difference]: Without dead ends: 2513 [2021-12-16 03:41:55,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:41:55,212 INFO L933 BasicCegarLoop]: 2667 mSDtfsCounter, 2851 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:41:55,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3618 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-12-16 03:41:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-12-16 03:41:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2394. [2021-12-16 03:41:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1659 states have (on average 1.3044002411091018) internal successors, (2164), 1705 states have internal predecessors, (2164), 569 states have call successors, (569), 170 states have call predecessors, (569), 165 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2021-12-16 03:41:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3287 transitions. [2021-12-16 03:41:55,299 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3287 transitions. Word has length 65 [2021-12-16 03:41:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:41:55,299 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3287 transitions. [2021-12-16 03:41:55,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 03:41:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3287 transitions. [2021-12-16 03:41:55,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 03:41:55,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:41:55,303 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:41:55,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:41:55,303 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:41:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:41:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2018660585, now seen corresponding path program 1 times [2021-12-16 03:41:55,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:41:55,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757524691] [2021-12-16 03:41:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:41:55,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:41:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:41:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 03:41:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:41:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:41:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:41:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:41:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:41:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 03:41:55,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:41:55,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757524691] [2021-12-16 03:41:55,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757524691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:41:55,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:41:55,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 03:41:55,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125739138] [2021-12-16 03:41:55,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:41:55,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:41:55,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:41:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:41:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:41:55,461 INFO L87 Difference]: Start difference. First operand 2394 states and 3287 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 03:41:57,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:41:59,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:42:01,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:42:04,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:42:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:42:08,668 INFO L93 Difference]: Finished difference Result 2543 states and 3503 transitions. [2021-12-16 03:42:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:42:08,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2021-12-16 03:42:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:42:08,679 INFO L225 Difference]: With dead ends: 2543 [2021-12-16 03:42:08,679 INFO L226 Difference]: Without dead ends: 2533 [2021-12-16 03:42:08,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:42:08,680 INFO L933 BasicCegarLoop]: 2371 mSDtfsCounter, 1138 mSDsluCounter, 6505 mSDsCounter, 0 mSdLazyCounter, 5173 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 8876 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:42:08,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 8876 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 5173 Invalid, 4 Unknown, 0 Unchecked, 13.0s Time] [2021-12-16 03:42:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-12-16 03:42:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2399. [2021-12-16 03:42:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1663 states have (on average 1.3036680697534575) internal successors, (2168), 1709 states have internal predecessors, (2168), 569 states have call successors, (569), 170 states have call predecessors, (569), 166 states have return successors, (557), 548 states have call predecessors, (557), 554 states have call successors, (557) [2021-12-16 03:42:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3294 transitions. [2021-12-16 03:42:08,748 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3294 transitions. Word has length 65 [2021-12-16 03:42:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:42:08,749 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3294 transitions. [2021-12-16 03:42:08,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 03:42:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3294 transitions. [2021-12-16 03:42:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 03:42:08,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:42:08,750 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:42:08,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:42:08,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:42:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:42:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1285989531, now seen corresponding path program 1 times [2021-12-16 03:42:08,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:42:08,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091298166] [2021-12-16 03:42:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:42:08,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:42:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:42:08,857 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 03:42:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 03:42:08,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 03:42:08,985 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 03:42:08,986 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 03:42:08,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:42:08,989 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:42:08,992 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 03:42:09,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 03:42:09 BoogieIcfgContainer [2021-12-16 03:42:09,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 03:42:09,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 03:42:09,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 03:42:09,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 03:42:09,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:41:32" (3/4) ... [2021-12-16 03:42:09,071 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 03:42:09,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 03:42:09,072 INFO L158 Benchmark]: Toolchain (without parser) took 46997.58ms. Allocated memory was 94.4MB in the beginning and 652.2MB in the end (delta: 557.8MB). Free memory was 48.8MB in the beginning and 347.6MB in the end (delta: -298.8MB). Peak memory consumption was 258.2MB. Max. memory is 16.1GB. [2021-12-16 03:42:09,072 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:42:09,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2363.70ms. Allocated memory was 94.4MB in the beginning and 201.3MB in the end (delta: 107.0MB). Free memory was 48.6MB in the beginning and 103.2MB in the end (delta: -54.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2021-12-16 03:42:09,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 251.50ms. Allocated memory is still 201.3MB. Free memory was 103.2MB in the beginning and 113.9MB in the end (delta: -10.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2021-12-16 03:42:09,073 INFO L158 Benchmark]: Boogie Preprocessor took 216.85ms. Allocated memory is still 201.3MB. Free memory was 113.9MB in the beginning and 78.3MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-12-16 03:42:09,073 INFO L158 Benchmark]: RCFGBuilder took 7380.05ms. Allocated memory was 201.3MB in the beginning and 358.6MB in the end (delta: 157.3MB). Free memory was 78.3MB in the beginning and 184.8MB in the end (delta: -106.5MB). Peak memory consumption was 170.9MB. Max. memory is 16.1GB. [2021-12-16 03:42:09,074 INFO L158 Benchmark]: TraceAbstraction took 36776.41ms. Allocated memory was 358.6MB in the beginning and 652.2MB in the end (delta: 293.6MB). Free memory was 184.8MB in the beginning and 348.7MB in the end (delta: -163.9MB). Peak memory consumption was 129.7MB. Max. memory is 16.1GB. [2021-12-16 03:42:09,074 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 652.2MB. Free memory was 348.7MB in the beginning and 347.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 03:42:09,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 49.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2363.70ms. Allocated memory was 94.4MB in the beginning and 201.3MB in the end (delta: 107.0MB). Free memory was 48.6MB in the beginning and 103.2MB in the end (delta: -54.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 251.50ms. Allocated memory is still 201.3MB. Free memory was 103.2MB in the beginning and 113.9MB in the end (delta: -10.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 216.85ms. Allocated memory is still 201.3MB. Free memory was 113.9MB in the beginning and 78.3MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * RCFGBuilder took 7380.05ms. Allocated memory was 201.3MB in the beginning and 358.6MB in the end (delta: 157.3MB). Free memory was 78.3MB in the beginning and 184.8MB in the end (delta: -106.5MB). Peak memory consumption was 170.9MB. Max. memory is 16.1GB. * TraceAbstraction took 36776.41ms. Allocated memory was 358.6MB in the beginning and 652.2MB in the end (delta: 293.6MB). Free memory was 184.8MB in the beginning and 348.7MB in the end (delta: -163.9MB). Peak memory consumption was 129.7MB. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 652.2MB. Free memory was 348.7MB in the beginning and 347.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=0, \result={0:0}, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={44806:-17400}, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:-17400}, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, ldv_func_arg1={44806:-17400}, ldv_func_arg1={44806:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, ldv_func_arg1={44806:-17400}, ldv_func_arg1={44806:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={44805:-3}, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={44805:-3}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, experimental_zcopytx=0, get_current()={44805:-3}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={44805:-3}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={44805:-3}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={44806:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:8}, lock={44806:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.6s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 19383 SdHoareTripleChecker+Valid, 32.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18321 mSDsluCounter, 40666 SdHoareTripleChecker+Invalid, 29.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16587 mSDsCounter, 3934 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12400 IncrementalHoareTripleChecker+Invalid, 16342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3934 mSolverCounterUnsat, 24079 mSDtfsCounter, 12400 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2965occurred in iteration=6, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 865 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-16 03:42:09,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:42:10,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:42:10,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:42:10,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:42:10,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:42:10,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:42:10,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:42:10,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:42:10,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:42:10,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:42:10,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:42:10,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:42:10,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:42:10,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:42:10,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:42:10,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:42:10,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:42:10,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:42:10,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:42:10,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:42:10,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:42:10,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:42:10,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:42:10,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:42:10,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:42:10,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:42:10,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:42:10,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:42:10,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:42:10,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:42:10,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:42:10,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:42:10,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:42:10,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:42:10,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:42:10,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:42:10,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:42:10,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:42:10,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:42:10,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:42:10,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:42:10,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-16 03:42:10,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:42:10,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:42:10,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:42:10,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:42:10,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:42:10,938 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:42:10,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:42:10,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:42:10,939 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:42:10,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:42:10,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:42:10,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:42:10,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:42:10,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:42:10,941 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 03:42:10,941 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 03:42:10,941 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 03:42:10,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:42:10,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:42:10,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:42:10,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:42:10,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:42:10,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:42:10,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:42:10,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:42:10,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:42:10,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:42:10,943 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 03:42:10,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 03:42:10,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:42:10,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:42:10,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:42:10,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:42:10,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 03:42:10,944 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-16 03:42:11,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:42:11,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:42:11,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:42:11,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:42:11,193 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:42:11,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-16 03:42:11,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5edef792/57c26fc2fb8e45f0bc9cff568d99b6b1/FLAGd9365537a [2021-12-16 03:42:11,930 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:42:11,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-16 03:42:11,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5edef792/57c26fc2fb8e45f0bc9cff568d99b6b1/FLAGd9365537a [2021-12-16 03:42:12,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5edef792/57c26fc2fb8e45f0bc9cff568d99b6b1 [2021-12-16 03:42:12,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:42:12,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:42:12,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:42:12,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:42:12,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:42:12,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:12" (1/1) ... [2021-12-16 03:42:12,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0b89e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:12, skipping insertion in model container [2021-12-16 03:42:12,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:42:12" (1/1) ... [2021-12-16 03:42:12,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:42:12,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:42:14,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-16 03:42:14,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:42:14,332 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 03:42:14,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:42:14,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-16 03:42:14,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:42:14,693 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:42:14,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-16 03:42:15,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:42:15,080 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:42:15,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15 WrapperNode [2021-12-16 03:42:15,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:42:15,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:42:15,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:42:15,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:42:15,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,297 INFO L137 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6447 [2021-12-16 03:42:15,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:42:15,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:42:15,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:42:15,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:42:15,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:42:15,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:42:15,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:42:15,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:42:15,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:42:15" (1/1) ... [2021-12-16 03:42:15,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:42:15,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:42:15,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:42:15,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:42:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-16 03:42:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-16 03:42:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-16 03:42:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-16 03:42:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-16 03:42:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-16 03:42:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-16 03:42:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-16 03:42:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-16 03:42:15,617 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-16 03:42:15,617 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-16 03:42:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-16 03:42:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-16 03:42:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:42:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-16 03:42:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-16 03:42:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-16 03:42:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-16 03:42:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-16 03:42:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-16 03:42:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-16 03:42:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-16 03:42:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-16 03:42:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-16 03:42:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-16 03:42:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-16 03:42:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-16 03:42:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-16 03:42:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-16 03:42:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-16 03:42:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:42:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:42:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-16 03:42:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-16 03:42:15,620 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:42:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:42:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:42:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:42:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-16 03:42:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-16 03:42:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-16 03:42:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-16 03:42:15,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-16 03:42:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-16 03:42:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-16 03:42:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-16 03:42:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-16 03:42:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-16 03:42:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-16 03:42:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-16 03:42:15,623 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-16 03:42:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 03:42:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 03:42:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:42:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:42:15,624 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-16 03:42:15,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-16 03:42:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-16 03:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-16 03:42:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-16 03:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-16 03:42:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:42:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 03:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 03:42:15,625 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-16 03:42:15,625 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-16 03:42:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-16 03:42:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-16 03:42:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:42:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 03:42:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 03:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-16 03:42:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-16 03:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-16 03:42:15,627 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-16 03:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-16 03:42:15,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-16 03:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-16 03:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 03:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:42:15,628 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-16 03:42:15,629 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-16 03:42:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-16 03:42:15,629 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-16 03:42:15,629 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 03:42:15,629 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 03:42:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-16 03:42:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-16 03:42:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-16 03:42:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 03:42:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-16 03:42:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-16 03:42:15,630 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-16 03:42:15,630 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 03:42:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 03:42:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:42:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:42:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-16 03:42:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-16 03:42:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 03:42:15,631 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 03:42:15,631 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-16 03:42:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-16 03:42:15,632 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-16 03:42:15,632 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-16 03:42:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-16 03:42:15,634 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-16 03:42:15,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-16 03:42:15,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-16 03:42:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-16 03:42:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-16 03:42:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 03:42:15,636 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 03:42:15,636 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-16 03:42:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-16 03:42:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-16 03:42:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-16 03:42:15,640 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-16 03:42:15,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-16 03:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-16 03:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-16 03:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-16 03:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-16 03:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-16 03:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-16 03:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-16 03:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-16 03:42:15,641 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:42:15,641 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-16 03:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-16 03:42:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-16 03:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-16 03:42:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-16 03:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-16 03:42:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-16 03:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-16 03:42:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-16 03:42:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-16 03:42:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-16 03:42:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-16 03:42:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-16 03:42:15,643 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-16 03:42:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-16 03:42:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-16 03:42:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-16 03:42:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-16 03:42:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-16 03:42:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-16 03:42:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-16 03:42:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:42:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:42:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-16 03:42:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-16 03:42:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-16 03:42:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-16 03:42:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:42:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-16 03:42:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-16 03:42:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-16 03:42:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-16 03:42:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-16 03:42:15,645 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-16 03:42:15,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:42:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-16 03:42:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-16 03:42:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-16 03:42:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-16 03:42:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-16 03:42:15,646 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-16 03:42:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:42:15,646 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-16 03:42:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-16 03:42:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:42:15,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-16 03:42:15,647 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-16 03:42:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-16 03:42:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-16 03:42:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-16 03:42:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-16 03:42:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-16 03:42:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-16 03:42:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-16 03:42:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-16 03:42:15,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-16 03:42:15,648 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-16 03:42:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-16 03:42:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-16 03:42:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-16 03:42:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-16 03:42:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-16 03:42:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-16 03:42:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-16 03:42:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-16 03:42:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-16 03:42:15,649 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-16 03:42:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-16 03:42:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-16 03:42:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-16 03:42:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-16 03:42:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-16 03:42:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-16 03:42:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-16 03:42:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-16 03:42:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-16 03:42:15,650 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-16 03:42:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-16 03:42:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 03:42:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 03:42:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-16 03:42:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-16 03:42:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-16 03:42:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-16 03:42:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-16 03:42:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-16 03:42:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-16 03:42:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-16 03:42:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-16 03:42:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:42:15,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:42:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-16 03:42:15,655 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-16 03:42:16,289 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:42:16,292 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation