./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 ae007674 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-dev-ae00767 [2021-12-28 03:39:32,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:39:32,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:39:32,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:39:32,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:39:32,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:39:32,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:39:32,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:39:32,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:39:32,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:39:32,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:39:32,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:39:32,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:39:32,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:39:32,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:39:32,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:39:32,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:39:32,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:39:32,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:39:32,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:39:32,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:39:32,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:39:32,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:39:32,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:39:32,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:39:32,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:39:32,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:39:32,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:39:32,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:39:32,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:39:32,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:39:32,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:39:32,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:39:32,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:39:32,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:39:32,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:39:32,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:39:32,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:39:32,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:39:32,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:39:32,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:39:32,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:39:32,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:39:32,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:39:32,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:39:32,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:39:32,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:39:32,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:39:32,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:39:32,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:39:32,466 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:39:32,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:39:32,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:39:32,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:39:32,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:39:32,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:39:32,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:39:32,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:39:32,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:39:32,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:39:32,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:39:32,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:39:32,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:39:32,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:39:32,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:39:32,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:39:32,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:39:32,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:39:32,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:39:32,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:39:32,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:39:32,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:39:32,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-28 03:39:32,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:39:32,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:39:32,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:39:32,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:39:32,775 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:39:32,776 INFO L432 ainManager$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 [2021-12-28 03:39:32,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11273530/75cc0e8bd7a34f1d953ead1e18619554/FLAGf283647ec [2021-12-28 03:39:33,453 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:39:33,454 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 [2021-12-28 03:39:33,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11273530/75cc0e8bd7a34f1d953ead1e18619554/FLAGf283647ec [2021-12-28 03:39:33,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11273530/75cc0e8bd7a34f1d953ead1e18619554 [2021-12-28 03:39:33,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:39:33,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:39:33,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:39:33,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:39:33,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:39:33,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:39:33" (1/1) ... [2021-12-28 03:39:33,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f7cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:33, skipping insertion in model container [2021-12-28 03:39:33,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:39:33" (1/1) ... [2021-12-28 03:39:33,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:39:33,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:39:35,352 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] [2021-12-28 03:39:35,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:39:35,457 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:39:35,851 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] [2021-12-28 03:39:35,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:39:36,005 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:39:36,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36 WrapperNode [2021-12-28 03:39:36,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:39:36,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:39:36,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:39:36,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:39:36,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,292 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2021-12-28 03:39:36,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:39:36,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:39:36,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:39:36,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:39:36,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:39:36,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:39:36,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:39:36,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:39:36,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (1/1) ... [2021-12-28 03:39:36,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:39:36,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:39:36,625 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) [2021-12-28 03:39:36,699 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 [2021-12-28 03:39:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-28 03:39:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-28 03:39:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-28 03:39:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-28 03:39:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-28 03:39:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-28 03:39:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-28 03:39:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-28 03:39:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-28 03:39:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-28 03:39:36,740 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-28 03:39:36,740 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-28 03:39:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:39:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-28 03:39:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-28 03:39:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:39:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-28 03:39:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-28 03:39:36,741 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-28 03:39:36,741 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-28 03:39:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-28 03:39:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-28 03:39:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-28 03:39:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-28 03:39:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-28 03:39:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-28 03:39:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-28 03:39:36,742 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-28 03:39:36,742 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 03:39:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 03:39:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-28 03:39:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-28 03:39:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:39:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:39:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-28 03:39:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-28 03:39:36,743 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:39:36,743 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:39:36,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:39:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:39:36,744 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-28 03:39:36,744 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:39:36,744 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:39:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-28 03:39:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-28 03:39:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-28 03:39:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-28 03:39:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-28 03:39:36,745 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-28 03:39:36,745 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-28 03:39:36,746 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-28 03:39:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-28 03:39:36,746 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-28 03:39:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-12-28 03:39:36,746 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-12-28 03:39:36,746 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:39:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:39:36,747 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:39:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:39:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-28 03:39:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-28 03:39:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-28 03:39:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-28 03:39:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-28 03:39:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-28 03:39:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:39:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:39:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:39:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-28 03:39:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-28 03:39:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-28 03:39:36,749 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-28 03:39:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:39:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:39:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:39:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-28 03:39:36,750 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-28 03:39:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-28 03:39:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-28 03:39:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:39:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:39:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-28 03:39:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-28 03:39:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-28 03:39:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-28 03:39:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:39:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:39:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-28 03:39:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-28 03:39:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-28 03:39:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-28 03:39:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-28 03:39:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-28 03:39:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:39:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:39:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:39:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:39:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-28 03:39:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-28 03:39:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:39:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:39:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-28 03:39:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-28 03:39:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-28 03:39:36,755 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-28 03:39:36,755 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-28 03:39:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-28 03:39:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 03:39:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 03:39:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-28 03:39:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-28 03:39:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:39:36,756 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:39:36,756 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:39:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-28 03:39:36,757 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-28 03:39:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-28 03:39:36,757 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-28 03:39:36,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:39:36,758 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-28 03:39:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-28 03:39:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:39:36,760 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-28 03:39:36,760 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-28 03:39:36,761 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-28 03:39:36,762 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-28 03:39:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-28 03:39:36,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-28 03:39:36,762 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-28 03:39:36,766 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-28 03:39:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:39:36,767 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:39:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-28 03:39:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-28 03:39:36,767 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-28 03:39:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:39:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 03:39:36,767 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 03:39:36,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-28 03:39:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-28 03:39:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-28 03:39:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-28 03:39:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-28 03:39:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-28 03:39:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-28 03:39:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-28 03:39:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-28 03:39:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-28 03:39:36,768 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-28 03:39:36,768 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-28 03:39:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-28 03:39:36,769 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-28 03:39:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:39:36,769 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:39:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-28 03:39:36,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-28 03:39:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:39:36,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:39:36,769 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-28 03:39:36,769 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-28 03:39:36,770 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-28 03:39:36,770 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-28 03:39:36,770 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-28 03:39:36,770 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:39:36,770 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-28 03:39:36,771 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-28 03:39:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-28 03:39:36,771 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-28 03:39:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-28 03:39:36,771 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-28 03:39:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:39:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-28 03:39:36,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-28 03:39:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:39:36,771 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-28 03:39:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-28 03:39:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:39:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:39:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-28 03:39:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-28 03:39:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-28 03:39:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-28 03:39:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-28 03:39:36,772 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-28 03:39:36,772 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-28 03:39:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-28 03:39:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 03:39:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 03:39:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-12-28 03:39:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-12-28 03:39:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-28 03:39:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-28 03:39:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-28 03:39:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-28 03:39:36,773 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-28 03:39:36,773 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-28 03:39:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:39:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:39:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-28 03:39:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-28 03:39:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-28 03:39:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-28 03:39:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-28 03:39:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-28 03:39:36,774 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-28 03:39:36,774 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-28 03:39:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-28 03:39:36,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-28 03:39:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:39:36,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:39:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-28 03:39:36,775 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-28 03:39:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-28 03:39:36,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-28 03:39:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 03:39:36,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 03:39:36,775 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-28 03:39:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-28 03:39:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:39:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-28 03:39:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-28 03:39:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-28 03:39:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-28 03:39:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-28 03:39:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-28 03:39:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:39:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:39:36,776 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:39:36,777 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:39:37,511 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:39:37,514 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:39:41,301 INFO L766 $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 [2021-12-28 03:39:41,302 INFO L766 $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; [2021-12-28 03:39:41,302 INFO L766 $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 [2021-12-28 03:39:41,302 INFO L766 $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; [2021-12-28 03:39:41,302 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-12-28 03:39:41,302 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-12-28 03:39:41,302 INFO L766 $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; [2021-12-28 03:39:41,302 INFO L766 $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; [2021-12-28 03:39:41,302 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-12-28 03:39:41,303 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-12-28 03:39:41,306 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-12-28 03:39:41,306 INFO L766 $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; [2021-12-28 03:39:41,306 INFO L766 $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; [2021-12-28 03:39:41,306 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-12-28 03:39:41,306 INFO L766 $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; [2021-12-28 03:39:41,306 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-28 03:39:41,306 INFO L766 $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; [2021-12-28 03:39:41,307 INFO L766 $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 [2021-12-28 03:39:41,307 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-28 03:39:41,308 INFO L766 $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; [2021-12-28 03:39:41,308 INFO L766 $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); [2021-12-28 03:39:41,308 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-28 03:39:41,308 INFO L766 $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; [2021-12-28 03:39:41,308 INFO L766 $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; [2021-12-28 03:39:41,308 INFO L766 $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; [2021-12-28 03:39:42,834 INFO L766 $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 [2021-12-28 03:39:42,834 INFO L766 $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; [2021-12-28 03:39:42,834 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-12-28 03:39:42,835 INFO L766 $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 [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-12-28 03:39:42,835 INFO L766 $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); [2021-12-28 03:39:42,835 INFO L766 $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 [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-28 03:39:42,835 INFO L766 $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; [2021-12-28 03:39:42,835 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-12-28 03:39:42,836 INFO L766 $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; [2021-12-28 03:39:43,506 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:39:43,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:39:43,529 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:39:43,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:39:43 BoogieIcfgContainer [2021-12-28 03:39:43,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:39:43,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:39:43,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:39:43,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:39:43,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:39:33" (1/3) ... [2021-12-28 03:39:43,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59826b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:39:43, skipping insertion in model container [2021-12-28 03:39:43,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:39:36" (2/3) ... [2021-12-28 03:39:43,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59826b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:39:43, skipping insertion in model container [2021-12-28 03:39:43,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:39:43" (3/3) ... [2021-12-28 03:39:43,539 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-28 03:39:43,543 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:39:43,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:39:43,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:39:43,590 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 [2021-12-28 03:39:43,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:39:43,635 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) [2021-12-28 03:39:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 03:39:43,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:43,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:43,640 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash -662016059, now seen corresponding path program 1 times [2021-12-28 03:39:43,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:43,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885791785] [2021-12-28 03:39:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:43,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:44,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885791785] [2021-12-28 03:39:44,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885791785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:44,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:44,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:44,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463913710] [2021-12-28 03:39:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:44,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:44,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:44,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:44,113 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) [2021-12-28 03:39:44,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:44,364 INFO L93 Difference]: Finished difference Result 4464 states and 6561 transitions. [2021-12-28 03:39:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:44,369 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 [2021-12-28 03:39:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:44,393 INFO L225 Difference]: With dead ends: 4464 [2021-12-28 03:39:44,393 INFO L226 Difference]: Without dead ends: 2228 [2021-12-28 03:39:44,408 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 [2021-12-28 03:39:44,411 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 [2021-12-28 03:39:44,412 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] [2021-12-28 03:39:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-12-28 03:39:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-12-28 03:39:44,571 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) [2021-12-28 03:39:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3219 transitions. [2021-12-28 03:39:44,590 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3219 transitions. Word has length 16 [2021-12-28 03:39:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:44,591 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3219 transitions. [2021-12-28 03:39:44,591 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) [2021-12-28 03:39:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3219 transitions. [2021-12-28 03:39:44,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 03:39:44,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:44,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:44,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:39:44,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 951309113, now seen corresponding path program 1 times [2021-12-28 03:39:44,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:44,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657385975] [2021-12-28 03:39:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:44,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:44,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:44,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657385975] [2021-12-28 03:39:44,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657385975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:44,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:44,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:44,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73770120] [2021-12-28 03:39:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:44,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:44,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:44,738 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) [2021-12-28 03:39:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:44,818 INFO L93 Difference]: Finished difference Result 2230 states and 3220 transitions. [2021-12-28 03:39:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:44,821 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 [2021-12-28 03:39:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:44,835 INFO L225 Difference]: With dead ends: 2230 [2021-12-28 03:39:44,835 INFO L226 Difference]: Without dead ends: 2227 [2021-12-28 03:39:44,839 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 [2021-12-28 03:39:44,840 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 [2021-12-28 03:39:44,841 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] [2021-12-28 03:39:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-12-28 03:39:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-12-28 03:39:44,907 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) [2021-12-28 03:39:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3217 transitions. [2021-12-28 03:39:44,920 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3217 transitions. Word has length 17 [2021-12-28 03:39:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:44,921 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3217 transitions. [2021-12-28 03:39:44,921 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) [2021-12-28 03:39:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3217 transitions. [2021-12-28 03:39:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:39:44,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:44,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:44,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:39:44,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:44,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash -575213240, now seen corresponding path program 1 times [2021-12-28 03:39:44,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:44,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505282745] [2021-12-28 03:39:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:44,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:44,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505282745] [2021-12-28 03:39:44,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505282745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:44,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:44,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:44,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650804675] [2021-12-28 03:39:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:44,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:44,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:44,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:44,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:44,996 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) [2021-12-28 03:39:45,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:45,082 INFO L93 Difference]: Finished difference Result 2229 states and 3218 transitions. [2021-12-28 03:39:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:45,082 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 [2021-12-28 03:39:45,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:45,097 INFO L225 Difference]: With dead ends: 2229 [2021-12-28 03:39:45,098 INFO L226 Difference]: Without dead ends: 2226 [2021-12-28 03:39:45,101 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 [2021-12-28 03:39:45,108 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 [2021-12-28 03:39:45,109 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] [2021-12-28 03:39:45,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-12-28 03:39:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2226. [2021-12-28 03:39:45,195 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) [2021-12-28 03:39:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3215 transitions. [2021-12-28 03:39:45,210 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3215 transitions. Word has length 18 [2021-12-28 03:39:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:45,211 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3215 transitions. [2021-12-28 03:39:45,211 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) [2021-12-28 03:39:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3215 transitions. [2021-12-28 03:39:45,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 03:39:45,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:45,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:39:45,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:39:45,212 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash -652761060, now seen corresponding path program 1 times [2021-12-28 03:39:45,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:45,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828902729] [2021-12-28 03:39:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:45,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:39:45,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:45,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828902729] [2021-12-28 03:39:45,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828902729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:45,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:45,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:39:45,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429206723] [2021-12-28 03:39:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:45,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:39:45,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:39:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:39:45,304 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) [2021-12-28 03:39:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:45,495 INFO L93 Difference]: Finished difference Result 5137 states and 7376 transitions. [2021-12-28 03:39:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:39:45,495 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 [2021-12-28 03:39:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:45,512 INFO L225 Difference]: With dead ends: 5137 [2021-12-28 03:39:45,512 INFO L226 Difference]: Without dead ends: 2913 [2021-12-28 03:39:45,523 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 [2021-12-28 03:39:45,528 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, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:45,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 6466 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:39:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2021-12-28 03:39:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2910. [2021-12-28 03:39:45,639 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) [2021-12-28 03:39:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4107 transitions. [2021-12-28 03:39:45,652 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4107 transitions. Word has length 19 [2021-12-28 03:39:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:45,653 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4107 transitions. [2021-12-28 03:39:45,653 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) [2021-12-28 03:39:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4107 transitions. [2021-12-28 03:39:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 03:39:45,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:45,656 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] [2021-12-28 03:39:45,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:39:45,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1639297723, now seen corresponding path program 1 times [2021-12-28 03:39:45,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:45,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074003377] [2021-12-28 03:39:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:45,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:39:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:39:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:39:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:39:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 03:39:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:39:45,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:45,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074003377] [2021-12-28 03:39:45,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074003377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:45,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:45,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:39:45,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800687015] [2021-12-28 03:39:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:45,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:39:45,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:39:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:39:45,820 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) [2021-12-28 03:39:48,373 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 [] [2021-12-28 03:39:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:39:56,551 INFO L93 Difference]: Finished difference Result 6348 states and 9025 transitions. [2021-12-28 03:39:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:39:56,552 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 [2021-12-28 03:39:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:39:56,569 INFO L225 Difference]: With dead ends: 6348 [2021-12-28 03:39:56,569 INFO L226 Difference]: Without dead ends: 3449 [2021-12-28 03:39:56,578 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 [2021-12-28 03:39:56,579 INFO L933 BasicCegarLoop]: 2763 mSDtfsCounter, 2218 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 1610 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 6017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:39:56,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 5584 Invalid, 6017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4406 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2021-12-28 03:39:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-12-28 03:39:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2965. [2021-12-28 03:39:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31884765625) internal successors, (2701), 2112 states have internal predecessors, (2701), 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) [2021-12-28 03:39:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4177 transitions. [2021-12-28 03:39:56,708 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4177 transitions. Word has length 56 [2021-12-28 03:39:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:39:56,708 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4177 transitions. [2021-12-28 03:39:56,709 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) [2021-12-28 03:39:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4177 transitions. [2021-12-28 03:39:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 03:39:56,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:39:56,714 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] [2021-12-28 03:39:56,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:39:56,714 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:39:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:39:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash -963749432, now seen corresponding path program 1 times [2021-12-28 03:39:56,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:39:56,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309634434] [2021-12-28 03:39:56,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:39:56,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:39:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:39:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:39:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:39:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 03:39:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-28 03:39:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:39:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:39:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:39:56,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:39:56,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309634434] [2021-12-28 03:39:56,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309634434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:39:56,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:39:56,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:39:56,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918099163] [2021-12-28 03:39:56,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:39:56,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:39:56,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:39:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:39:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:39:56,863 INFO L87 Difference]: Start difference. First operand 2965 states and 4177 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-12-28 03:39:59,129 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 [] [2021-12-28 03:40:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:02,011 INFO L93 Difference]: Finished difference Result 6019 states and 8585 transitions. [2021-12-28 03:40:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:40:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 62 [2021-12-28 03:40:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:02,026 INFO L225 Difference]: With dead ends: 6019 [2021-12-28 03:40:02,026 INFO L226 Difference]: Without dead ends: 3065 [2021-12-28 03:40:02,037 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 [2021-12-28 03:40:02,039 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 1192 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:02,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5430 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2340 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-12-28 03:40:02,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2021-12-28 03:40:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2965. [2021-12-28 03:40:02,146 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) [2021-12-28 03:40:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4171 transitions. [2021-12-28 03:40:02,157 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4171 transitions. Word has length 62 [2021-12-28 03:40:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:02,159 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4171 transitions. [2021-12-28 03:40:02,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-12-28 03:40:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4171 transitions. [2021-12-28 03:40:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 03:40:02,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:02,161 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] [2021-12-28 03:40:02,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:40:02,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash -566496063, now seen corresponding path program 1 times [2021-12-28 03:40:02,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:02,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679527947] [2021-12-28 03:40:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:02,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:40:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:40:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:40:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:40:02,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:02,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679527947] [2021-12-28 03:40:02,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679527947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:02,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:02,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:40:02,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530553216] [2021-12-28 03:40:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:02,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:40:02,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:40:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:40:02,310 INFO L87 Difference]: Start difference. First operand 2965 states and 4171 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-12-28 03:40:04,557 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 [] [2021-12-28 03:40:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:06,779 INFO L93 Difference]: Finished difference Result 5045 states and 7042 transitions. [2021-12-28 03:40:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:40:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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 62 [2021-12-28 03:40:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:06,789 INFO L225 Difference]: With dead ends: 5045 [2021-12-28 03:40:06,789 INFO L226 Difference]: Without dead ends: 2513 [2021-12-28 03:40:06,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:40:06,797 INFO L933 BasicCegarLoop]: 2668 mSDtfsCounter, 2851 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3621 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 [2021-12-28 03:40:06,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3621 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-12-28 03:40:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-12-28 03:40:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2394. [2021-12-28 03:40:06,865 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) [2021-12-28 03:40:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3287 transitions. [2021-12-28 03:40:06,873 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3287 transitions. Word has length 62 [2021-12-28 03:40:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:06,873 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3287 transitions. [2021-12-28 03:40:06,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-12-28 03:40:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3287 transitions. [2021-12-28 03:40:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 03:40:06,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:06,877 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] [2021-12-28 03:40:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:40:06,877 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2018660585, now seen corresponding path program 1 times [2021-12-28 03:40:06,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541935399] [2021-12-28 03:40:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:06,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:40:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:06,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 03:40:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:06,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:40:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-28 03:40:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:40:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:07,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:40:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:40:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:40:07,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:40:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541935399] [2021-12-28 03:40:07,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541935399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:40:07,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:40:07,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:40:07,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309379063] [2021-12-28 03:40:07,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:40:07,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:40:07,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:40:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:40:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:40:07,024 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) [2021-12-28 03:40:09,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:11,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:13,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:15,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:40:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:40:20,909 INFO L93 Difference]: Finished difference Result 2543 states and 3503 transitions. [2021-12-28 03:40:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:40:20,910 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 [2021-12-28 03:40:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:40:20,918 INFO L225 Difference]: With dead ends: 2543 [2021-12-28 03:40:20,918 INFO L226 Difference]: Without dead ends: 2533 [2021-12-28 03:40:20,918 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 [2021-12-28 03:40:20,919 INFO L933 BasicCegarLoop]: 2369 mSDtfsCounter, 1138 mSDsluCounter, 4952 mSDsCounter, 0 mSdLazyCounter, 6718 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 7321 SdHoareTripleChecker+Invalid, 7224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 6718 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:40:20,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 7321 Invalid, 7224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 6718 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2021-12-28 03:40:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-12-28 03:40:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2399. [2021-12-28 03:40:20,991 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) [2021-12-28 03:40:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3294 transitions. [2021-12-28 03:40:20,998 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3294 transitions. Word has length 65 [2021-12-28 03:40:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:40:20,998 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3294 transitions. [2021-12-28 03:40:20,999 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) [2021-12-28 03:40:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3294 transitions. [2021-12-28 03:40:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 03:40:21,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:40:21,001 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] [2021-12-28 03:40:21,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:40:21,001 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:40:21,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:40:21,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1285989531, now seen corresponding path program 1 times [2021-12-28 03:40:21,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:40:21,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518489276] [2021-12-28 03:40:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:40:21,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:40:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 03:40:21,122 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 03:40:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 03:40:21,260 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 03:40:21,261 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 03:40:21,262 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 03:40:21,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:40:21,267 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:40:21,270 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 03:40:21,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 03:40:21 BoogieIcfgContainer [2021-12-28 03:40:21,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 03:40:21,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 03:40:21,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 03:40:21,347 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 03:40:21,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:39:43" (3/4) ... [2021-12-28 03:40:21,350 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 03:40:21,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 03:40:21,350 INFO L158 Benchmark]: Toolchain (without parser) took 47757.05ms. Allocated memory was 50.3MB in the beginning and 641.7MB in the end (delta: 591.4MB). Free memory was 23.3MB in the beginning and 366.6MB in the end (delta: -343.4MB). Peak memory consumption was 247.9MB. Max. memory is 16.1GB. [2021-12-28 03:40:21,351 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.2MB in the beginning and 32.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:40:21,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2412.40ms. Allocated memory was 50.3MB in the beginning and 119.5MB in the end (delta: 69.2MB). Free memory was 23.1MB in the beginning and 40.9MB in the end (delta: -17.8MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. [2021-12-28 03:40:21,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 283.66ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 40.9MB in the beginning and 62.6MB in the end (delta: -21.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-12-28 03:40:21,352 INFO L158 Benchmark]: Boogie Preprocessor took 291.20ms. Allocated memory is still 155.2MB. Free memory was 62.6MB in the beginning and 66.9MB in the end (delta: -4.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2021-12-28 03:40:21,352 INFO L158 Benchmark]: RCFGBuilder took 6948.56ms. Allocated memory was 155.2MB in the beginning and 459.3MB in the end (delta: 304.1MB). Free memory was 66.9MB in the beginning and 329.3MB in the end (delta: -262.5MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. [2021-12-28 03:40:21,353 INFO L158 Benchmark]: TraceAbstraction took 37811.64ms. Allocated memory was 459.3MB in the beginning and 641.7MB in the end (delta: 182.5MB). Free memory was 329.3MB in the beginning and 367.7MB in the end (delta: -38.4MB). Peak memory consumption was 145.1MB. Max. memory is 16.1GB. [2021-12-28 03:40:21,353 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 641.7MB. Free memory was 367.7MB in the beginning and 366.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:40:21,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 50.3MB. Free memory was 32.2MB in the beginning and 32.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2412.40ms. Allocated memory was 50.3MB in the beginning and 119.5MB in the end (delta: 69.2MB). Free memory was 23.1MB in the beginning and 40.9MB in the end (delta: -17.8MB). Peak memory consumption was 55.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 283.66ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 40.9MB in the beginning and 62.6MB in the end (delta: -21.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 291.20ms. Allocated memory is still 155.2MB. Free memory was 62.6MB in the beginning and 66.9MB in the end (delta: -4.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * RCFGBuilder took 6948.56ms. Allocated memory was 155.2MB in the beginning and 459.3MB in the end (delta: 304.1MB). Free memory was 66.9MB in the beginning and 329.3MB in the end (delta: -262.5MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. * TraceAbstraction took 37811.64ms. Allocated memory was 459.3MB in the beginning and 641.7MB in the end (delta: 182.5MB). Free memory was 329.3MB in the beginning and 367.7MB in the end (delta: -38.4MB). Peak memory consumption was 145.1MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 641.7MB. Free memory was 367.7MB in the beginning and 366.6MB 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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=-2, 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={8589934596:8589934597}, 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=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={8589934596:8589934597}, 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=-2, 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)=4294967295, \result={0:4294967295}, __this_module={8589934596:8589934597}, 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=4294967295, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934592:-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={8589934596:8589934597}, 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={8589934592:-17400}, lock={8589934592:-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={8589934596:8589934597}, 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={8589934592:-17400}, lock={8589934592:-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={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934592:-17400}, ldv_func_arg1={8589934592:-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={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934592:-17400}, ldv_func_arg1={8589934592:-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={8589934596:8589934597}, dev={8589934592:-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={8589934596:8589934597}, dev={8589934592:-17416}, dev={8589934592:-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={8589934596:8589934597}, 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={8589934596:8589934597}, 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={8589934595:-4}, __this_module={8589934596:8589934597}, 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__={8589934595:-4}, 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={8589934596:8589934597}, dev={8589934592:-17416}, dev={8589934592:-17416}, experimental_zcopytx=0, get_current()={8589934595:-4}, 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={8589934596:8589934597}, dev={8589934592:-17416}, dev={8589934592:-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={8589934595:-4}, 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={8589934596:8589934597}, dev={8589934592:-17416}, dev={8589934592:-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={8589934595:-4}, 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={8589934596:8589934597}, 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={8589934592:-17416}, n={8589934592:-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={8589934596:8589934597}, 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={8589934592:-17416}, n={8589934592:-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={8589934596:8589934597}, 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={8589934592:-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={8589934596:8589934597}, 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={8589934592:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={8589934592:0}] [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={8589934596:8589934597}, 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={8589934592:8}, 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={8589934596:8589934597}, 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={8589934592:8}, lock={8589934592:8}, 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={8589934596:8589934597}, 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={8589934596:8589934597}, 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: 37.7s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 19392 SdHoareTripleChecker+Valid, 33.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18328 mSDsluCounter, 38082 SdHoareTripleChecker+Invalid, 30.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14007 mSDsCounter, 3943 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14960 IncrementalHoareTripleChecker+Invalid, 18910 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3943 mSolverCounterUnsat, 24075 mSDtfsCounter, 14960 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2965occurred in iteration=5, 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: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 840 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 [2021-12-28 03:40:21,449 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-dev-ae00767 [2021-12-28 03:40:23,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:40:23,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:40:23,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:40:23,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:40:23,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:40:23,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:40:23,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:40:23,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:40:23,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:40:23,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:40:23,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:40:23,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:40:23,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:40:23,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:40:23,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:40:23,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:40:23,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:40:23,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:40:23,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:40:23,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:40:23,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:40:23,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:40:23,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:40:23,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:40:23,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:40:23,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:40:23,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:40:23,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:40:23,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:40:23,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:40:23,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:40:23,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:40:23,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:40:23,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:40:23,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:40:23,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:40:23,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:40:23,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:40:23,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:40:23,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:40:23,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-28 03:40:23,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:40:23,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:40:23,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:40:23,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:40:23,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:40:23,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:40:23,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:40:23,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:40:23,134 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:40:23,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:40:23,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:40:23,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:40:23,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:40:23,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:40:23,136 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 03:40:23,136 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 03:40:23,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 03:40:23,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:40:23,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:40:23,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:40:23,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:40:23,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:40:23,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:40:23,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:40:23,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:40:23,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:40:23,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:40:23,142 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 03:40:23,142 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 03:40:23,142 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:40:23,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:40:23,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:40:23,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 03:40:23,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-28 03:40:23,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:40:23,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:40:23,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:40:23,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:40:23,396 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:40:23,397 INFO L432 ainManager$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 [2021-12-28 03:40:23,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99387958/6064656408d749389a46f8042f71cbf2/FLAGbc21a94ef [2021-12-28 03:40:24,039 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:40:24,040 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 [2021-12-28 03:40:24,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99387958/6064656408d749389a46f8042f71cbf2/FLAGbc21a94ef [2021-12-28 03:40:24,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99387958/6064656408d749389a46f8042f71cbf2 [2021-12-28 03:40:24,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:40:24,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:40:24,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:40:24,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:40:24,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:40:24,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:40:24" (1/1) ... [2021-12-28 03:40:24,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427a4faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:24, skipping insertion in model container [2021-12-28 03:40:24,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:40:24" (1/1) ... [2021-12-28 03:40:24,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:40:24,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:40:26,152 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] [2021-12-28 03:40:26,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:26,244 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-28 03:40:26,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:40:26,580 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] [2021-12-28 03:40:26,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:26,595 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:40:26,939 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] [2021-12-28 03:40:26,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:40:27,013 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:40:27,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27 WrapperNode [2021-12-28 03:40:27,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:40:27,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:40:27,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:40:27,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:40:27,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,234 INFO L137 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6447 [2021-12-28 03:40:27,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:40:27,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:40:27,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:40:27,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:40:27,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:40:27,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:40:27,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:40:27,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:40:27,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:40:27" (1/1) ... [2021-12-28 03:40:27,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:40:27,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:40:27,454 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) [2021-12-28 03:40:27,471 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 [2021-12-28 03:40:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-28 03:40:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-28 03:40:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-28 03:40:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-28 03:40:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-28 03:40:27,481 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-28 03:40:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-28 03:40:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-28 03:40:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-28 03:40:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-28 03:40:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-28 03:40:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-28 03:40:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-28 03:40:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-28 03:40:27,482 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-28 03:40:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:40:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-28 03:40:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-28 03:40:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-28 03:40:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:40:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-28 03:40:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-28 03:40:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-28 03:40:27,483 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-28 03:40:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-28 03:40:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-28 03:40:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-28 03:40:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-28 03:40:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-28 03:40:27,484 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-28 03:40:27,484 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-28 03:40:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-28 03:40:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 03:40:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 03:40:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-28 03:40:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-28 03:40:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:40:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:40:27,485 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-28 03:40:27,485 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-28 03:40:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:40:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:40:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:40:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:40:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-28 03:40:27,486 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-28 03:40:27,486 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-28 03:40:27,487 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-28 03:40:27,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-28 03:40:27,487 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-28 03:40:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-28 03:40:27,488 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-28 03:40:27,488 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-28 03:40:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-28 03:40:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-28 03:40:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-28 03:40:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-28 03:40:27,489 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 03:40:27,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 03:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-28 03:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-28 03:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-28 03:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-28 03:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-28 03:40:27,490 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-28 03:40:27,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-28 03:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-28 03:40:27,491 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-28 03:40:27,491 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-28 03:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-28 03:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-28 03:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-28 03:40:27,492 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-28 03:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-28 03:40:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-28 03:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-28 03:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-28 03:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:40:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-28 03:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-28 03:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-28 03:40:27,494 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-28 03:40:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:40:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-28 03:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-28 03:40:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-28 03:40:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 03:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-28 03:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-28 03:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-28 03:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:40:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-28 03:40:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-28 03:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:40:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-28 03:40:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-28 03:40:27,497 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-28 03:40:27,498 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-28 03:40:27,498 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-28 03:40:27,500 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-28 03:40:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 03:40:27,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 03:40:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-28 03:40:27,502 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-28 03:40:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:40:27,502 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:40:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-28 03:40:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-28 03:40:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-28 03:40:27,507 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-28 03:40:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-28 03:40:27,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-28 03:40:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-28 03:40:27,507 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-28 03:40:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-28 03:40:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-28 03:40:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-28 03:40:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-28 03:40:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-28 03:40:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-28 03:40:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:40:27,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:40:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-28 03:40:27,508 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-28 03:40:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-28 03:40:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 03:40:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 03:40:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-28 03:40:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-28 03:40:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-28 03:40:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-28 03:40:27,509 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-28 03:40:27,509 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-28 03:40:27,510 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-28 03:40:27,510 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-28 03:40:27,510 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-28 03:40:27,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-28 03:40:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-28 03:40:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-28 03:40:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-28 03:40:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-28 03:40:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-28 03:40:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-28 03:40:27,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:40:27,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:40:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-28 03:40:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-28 03:40:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-28 03:40:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-28 03:40:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:40:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-28 03:40:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-28 03:40:27,512 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-28 03:40:27,512 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-28 03:40:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-28 03:40:27,513 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-28 03:40:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:40:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-28 03:40:27,513 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-28 03:40:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-28 03:40:27,513 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-28 03:40:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-28 03:40:27,513 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-28 03:40:27,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:40:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-28 03:40:27,514 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-28 03:40:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 03:40:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-28 03:40:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-28 03:40:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-28 03:40:27,514 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-28 03:40:27,514 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:40:27,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:40:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-28 03:40:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-28 03:40:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-28 03:40:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-28 03:40:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-28 03:40:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-28 03:40:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-28 03:40:27,515 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-28 03:40:27,515 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-28 03:40:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 03:40:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 03:40:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-28 03:40:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-28 03:40:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-28 03:40:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-28 03:40:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-28 03:40:27,516 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-28 03:40:27,516 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:40:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:40:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-28 03:40:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-28 03:40:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-28 03:40:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-28 03:40:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-28 03:40:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-28 03:40:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-28 03:40:27,517 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-28 03:40:27,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-28 03:40:27,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-28 03:40:27,518 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-28 03:40:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-28 03:40:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-28 03:40:27,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-28 03:40:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:40:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:40:27,553 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:40:28,214 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:40:28,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation