./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 eb692b52 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-?-eb692b5 [2022-07-19 22:45:06,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:45:06,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:45:06,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:45:06,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:45:06,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:45:06,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:45:06,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:45:06,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:45:06,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:45:06,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:45:06,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:45:06,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:45:06,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:45:06,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:45:06,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:45:06,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:45:06,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:45:06,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:45:06,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:45:06,425 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:45:06,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:45:06,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:45:06,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:45:06,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:45:06,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:45:06,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:45:06,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:45:06,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:45:06,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:45:06,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:45:06,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:45:06,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:45:06,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:45:06,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:45:06,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:45:06,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:45:06,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:45:06,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:45:06,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:45:06,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:45:06,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:45:06,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:45:06,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:45:06,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:45:06,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:45:06,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:45:06,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:45:06,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:45:06,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:45:06,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:45:06,482 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:45:06,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:45:06,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:45:06,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:45:06,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:45:06,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:45:06,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:45:06,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:45:06,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:45:06,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:45:06,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:45:06,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:45:06,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:45:06,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:45:06,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:45:06,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:45:06,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:45:06,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:45:06,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:45:06,486 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:45:06,487 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:45:06,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:45:06,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-07-19 22:45:06,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:45:06,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:45:06,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:45:06,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:45:06,719 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:45:06,720 INFO L432 ainManager$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 [2022-07-19 22:45:06,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a34d7942/8741d71950ed4d82ac1a7db88a05c320/FLAG6bcc07c83 [2022-07-19 22:45:07,534 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:45:07,534 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 [2022-07-19 22:45:07,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a34d7942/8741d71950ed4d82ac1a7db88a05c320/FLAG6bcc07c83 [2022-07-19 22:45:08,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a34d7942/8741d71950ed4d82ac1a7db88a05c320 [2022-07-19 22:45:08,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:45:08,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:45:08,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:45:08,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:45:08,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:45:08,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:45:08" (1/1) ... [2022-07-19 22:45:08,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b494306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:08, skipping insertion in model container [2022-07-19 22:45:08,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:45:08" (1/1) ... [2022-07-19 22:45:08,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:45:08,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:45:10,158 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] [2022-07-19 22:45:10,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:45:10,283 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:45:10,673 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] [2022-07-19 22:45:10,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:45:10,756 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:45:10,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10 WrapperNode [2022-07-19 22:45:10,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:45:10,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:45:10,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:45:10,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:45:10,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:10,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,076 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6671 [2022-07-19 22:45:11,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:45:11,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:45:11,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:45:11,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:45:11,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:45:11,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:45:11,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:45:11,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:45:11,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (1/1) ... [2022-07-19 22:45:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:45:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:45:11,433 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) [2022-07-19 22:45:11,458 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 [2022-07-19 22:45:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-07-19 22:45:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-07-19 22:45:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-07-19 22:45:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-07-19 22:45:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-07-19 22:45:11,480 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-07-19 22:45:11,480 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-07-19 22:45:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-07-19 22:45:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-19 22:45:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-19 22:45:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-07-19 22:45:11,481 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-07-19 22:45:11,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 22:45:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-07-19 22:45:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-07-19 22:45:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 22:45:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-07-19 22:45:11,482 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-07-19 22:45:11,482 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-07-19 22:45:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-07-19 22:45:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-07-19 22:45:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-07-19 22:45:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-07-19 22:45:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-07-19 22:45:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-19 22:45:11,483 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-19 22:45:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-19 22:45:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-19 22:45:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-19 22:45:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-19 22:45:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-07-19 22:45:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-07-19 22:45:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 22:45:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 22:45:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-07-19 22:45:11,485 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-07-19 22:45:11,485 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 22:45:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 22:45:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 22:45:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 22:45:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-07-19 22:45:11,486 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-19 22:45:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-19 22:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-07-19 22:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-07-19 22:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-07-19 22:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-07-19 22:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-07-19 22:45:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-07-19 22:45:11,487 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-07-19 22:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-07-19 22:45:11,488 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-07-19 22:45:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-07-19 22:45:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-07-19 22:45:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-07-19 22:45:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 22:45:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 22:45:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 22:45:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 22:45:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-19 22:45:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-19 22:45:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-07-19 22:45:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-07-19 22:45:11,491 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-07-19 22:45:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-07-19 22:45:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:45:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-19 22:45:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-19 22:45:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-07-19 22:45:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-07-19 22:45:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-07-19 22:45:11,493 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-07-19 22:45:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:45:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 22:45:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 22:45:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-07-19 22:45:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-07-19 22:45:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-07-19 22:45:11,494 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-07-19 22:45:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:45:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-07-19 22:45:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-07-19 22:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-07-19 22:45:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-07-19 22:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 22:45:11,495 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 22:45:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-07-19 22:45:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-07-19 22:45:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-07-19 22:45:11,496 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-07-19 22:45:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 22:45:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-19 22:45:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-19 22:45:11,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-19 22:45:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 22:45:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 22:45:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-07-19 22:45:11,498 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-07-19 22:45:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-19 22:45:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-19 22:45:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-07-19 22:45:11,499 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-07-19 22:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-07-19 22:45:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-07-19 22:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-07-19 22:45:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-07-19 22:45:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-19 22:45:11,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-19 22:45:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-19 22:45:11,501 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-19 22:45:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 22:45:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-19 22:45:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-19 22:45:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-07-19 22:45:11,502 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-07-19 22:45:11,502 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-19 22:45:11,503 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-19 22:45:11,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 22:45:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-07-19 22:45:11,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-07-19 22:45:11,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:45:11,506 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-07-19 22:45:11,506 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-07-19 22:45:11,507 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-07-19 22:45:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-07-19 22:45:11,508 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-07-19 22:45:11,508 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-07-19 22:45:11,513 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-19 22:45:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-19 22:45:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 22:45:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 22:45:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-07-19 22:45:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-07-19 22:45:11,514 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-07-19 22:45:11,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:45:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-19 22:45:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-19 22:45:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-07-19 22:45:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-07-19 22:45:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-07-19 22:45:11,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-07-19 22:45:11,515 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-07-19 22:45:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-07-19 22:45:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-07-19 22:45:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-07-19 22:45:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-07-19 22:45:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-07-19 22:45:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-07-19 22:45:11,516 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-07-19 22:45:11,516 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-07-19 22:45:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-07-19 22:45:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-19 22:45:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-19 22:45:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-19 22:45:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-19 22:45:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 22:45:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 22:45:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-07-19 22:45:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-07-19 22:45:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-07-19 22:45:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-07-19 22:45:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:45:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-19 22:45:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-19 22:45:11,518 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-19 22:45:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-19 22:45:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-07-19 22:45:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-07-19 22:45:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:45:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-07-19 22:45:11,519 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-07-19 22:45:11,519 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-07-19 22:45:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-07-19 22:45:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-07-19 22:45:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-07-19 22:45:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:45:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-19 22:45:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-19 22:45:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 22:45:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-07-19 22:45:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-07-19 22:45:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 22:45:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 22:45:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-07-19 22:45:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-07-19 22:45:11,521 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-19 22:45:11,521 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-19 22:45:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-19 22:45:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-19 22:45:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-07-19 22:45:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-07-19 22:45:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-19 22:45:11,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-19 22:45:11,522 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-07-19 22:45:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-07-19 22:45:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-19 22:45:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-19 22:45:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-07-19 22:45:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-07-19 22:45:11,523 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-07-19 22:45:11,523 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-07-19 22:45:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-19 22:45:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-19 22:45:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-07-19 22:45:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-07-19 22:45:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-07-19 22:45:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-07-19 22:45:11,524 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-19 22:45:11,524 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-19 22:45:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-07-19 22:45:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-07-19 22:45:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-07-19 22:45:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-07-19 22:45:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-19 22:45:11,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-19 22:45:11,525 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-07-19 22:45:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-07-19 22:45:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-19 22:45:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-19 22:45:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 22:45:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 22:45:11,526 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-07-19 22:45:11,526 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-07-19 22:45:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:45:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-07-19 22:45:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-07-19 22:45:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-07-19 22:45:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-07-19 22:45:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-19 22:45:11,527 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-19 22:45:11,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:45:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:45:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 22:45:11,528 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 22:45:12,286 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:45:12,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:45:16,449 INFO L764 $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 [2022-07-19 22:45:16,449 INFO L764 $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; [2022-07-19 22:45:16,449 INFO L764 $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 [2022-07-19 22:45:16,449 INFO L764 $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; [2022-07-19 22:45:16,450 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-07-19 22:45:16,450 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-07-19 22:45:16,450 INFO L764 $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; [2022-07-19 22:45:16,450 INFO L764 $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; [2022-07-19 22:45:16,450 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-07-19 22:45:16,450 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-07-19 22:45:16,450 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-07-19 22:45:16,450 INFO L764 $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; [2022-07-19 22:45:16,450 INFO L764 $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; [2022-07-19 22:45:16,450 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-07-19 22:45:16,451 INFO L764 $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; [2022-07-19 22:45:16,451 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-19 22:45:16,451 INFO L764 $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; [2022-07-19 22:45:16,451 INFO L764 $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 [2022-07-19 22:45:16,451 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-19 22:45:16,451 INFO L764 $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; [2022-07-19 22:45:16,451 INFO L764 $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); [2022-07-19 22:45:16,451 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-19 22:45:16,451 INFO L764 $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; [2022-07-19 22:45:16,451 INFO L764 $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; [2022-07-19 22:45:16,452 INFO L764 $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; [2022-07-19 22:45:18,431 INFO L764 $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 [2022-07-19 22:45:18,431 INFO L764 $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; [2022-07-19 22:45:18,431 INFO L764 $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; [2022-07-19 22:45:18,431 INFO L764 $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; [2022-07-19 22:45:18,431 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-07-19 22:45:18,431 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-07-19 22:45:18,431 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-07-19 22:45:18,431 INFO L764 $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 [2022-07-19 22:45:18,431 INFO L764 $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; [2022-07-19 22:45:18,431 INFO L764 $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; [2022-07-19 22:45:18,431 INFO L764 $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; [2022-07-19 22:45:18,432 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-19 22:45:18,432 INFO L764 $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; [2022-07-19 22:45:18,432 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-19 22:45:18,432 INFO L764 $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; [2022-07-19 22:45:18,432 INFO L764 $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; [2022-07-19 22:45:18,432 INFO L764 $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; [2022-07-19 22:45:18,432 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-07-19 22:45:18,432 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-07-19 22:45:18,432 INFO L764 $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); [2022-07-19 22:45:18,432 INFO L764 $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 [2022-07-19 22:45:18,432 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-19 22:45:18,432 INFO L764 $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; [2022-07-19 22:45:18,432 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-07-19 22:45:18,432 INFO L764 $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; [2022-07-19 22:45:19,277 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:45:19,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:45:19,297 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 22:45:19,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:45:19 BoogieIcfgContainer [2022-07-19 22:45:19,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:45:19,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:45:19,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:45:19,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:45:19,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:45:08" (1/3) ... [2022-07-19 22:45:19,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6ddbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:45:19, skipping insertion in model container [2022-07-19 22:45:19,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:45:10" (2/3) ... [2022-07-19 22:45:19,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6ddbf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:45:19, skipping insertion in model container [2022-07-19 22:45:19,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:45:19" (3/3) ... [2022-07-19 22:45:19,313 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-07-19 22:45:19,330 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:45:19,331 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:45:19,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:45:19,425 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2abf7567, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@749b530f [2022-07-19 22:45:19,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:45:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 2248 states, 1559 states have (on average 1.347658755612572) internal successors, (2101), 1605 states have internal predecessors, (2101), 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) [2022-07-19 22:45:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 22:45:19,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:19,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:45:19,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1613910609, now seen corresponding path program 1 times [2022-07-19 22:45:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:19,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623050313] [2022-07-19 22:45:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:45:19,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:19,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623050313] [2022-07-19 22:45:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623050313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:19,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:19,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:45:19,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102820521] [2022-07-19 22:45:19,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:19,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:45:19,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:45:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:45:20,079 INFO L87 Difference]: Start difference. First operand has 2248 states, 1559 states have (on average 1.347658755612572) internal successors, (2101), 1605 states have internal predecessors, (2101), 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) [2022-07-19 22:45:20,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:20,334 INFO L93 Difference]: Finished difference Result 4478 states and 6611 transitions. [2022-07-19 22:45:20,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:45:20,341 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 [2022-07-19 22:45:20,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:20,370 INFO L225 Difference]: With dead ends: 4478 [2022-07-19 22:45:20,371 INFO L226 Difference]: Without dead ends: 2237 [2022-07-19 22:45:20,396 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:20,400 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 3235 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 3245 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 [2022-07-19 22:45:20,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3235 Valid, 3245 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:45:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-07-19 22:45:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2237. [2022-07-19 22:45:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1551 states have (on average 1.3430045132172792) internal successors, (2083), 1594 states have internal predecessors, (2083), 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) [2022-07-19 22:45:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3234 transitions. [2022-07-19 22:45:20,613 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3234 transitions. Word has length 16 [2022-07-19 22:45:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:20,614 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3234 transitions. [2022-07-19 22:45:20,615 INFO L496 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) [2022-07-19 22:45:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3234 transitions. [2022-07-19 22:45:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 22:45:20,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:20,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:45:20,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:45:20,618 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1507349808, now seen corresponding path program 1 times [2022-07-19 22:45:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:20,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280592909] [2022-07-19 22:45:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:45:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:20,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280592909] [2022-07-19 22:45:20,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280592909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:20,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:20,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:45:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337838368] [2022-07-19 22:45:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:20,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:45:20,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:45:20,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:45:20,735 INFO L87 Difference]: Start difference. First operand 2237 states and 3234 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) [2022-07-19 22:45:20,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:20,882 INFO L93 Difference]: Finished difference Result 2239 states and 3235 transitions. [2022-07-19 22:45:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:45:20,883 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 [2022-07-19 22:45:20,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:20,896 INFO L225 Difference]: With dead ends: 2239 [2022-07-19 22:45:20,897 INFO L226 Difference]: Without dead ends: 2236 [2022-07-19 22:45:20,902 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:20,903 INFO L413 NwaCegarLoop]: 3231 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, 3231 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 [2022-07-19 22:45:20,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3220 Valid, 3231 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:45:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-07-19 22:45:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2236. [2022-07-19 22:45:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 1551 states have (on average 1.3423597678916828) internal successors, (2082), 1593 states have internal predecessors, (2082), 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) [2022-07-19 22:45:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3232 transitions. [2022-07-19 22:45:21,021 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3232 transitions. Word has length 17 [2022-07-19 22:45:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:21,022 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3232 transitions. [2022-07-19 22:45:21,023 INFO L496 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) [2022-07-19 22:45:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3232 transitions. [2022-07-19 22:45:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 22:45:21,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:21,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:45:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 22:45:21,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash -517820206, now seen corresponding path program 1 times [2022-07-19 22:45:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:21,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323180880] [2022-07-19 22:45:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:45:21,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323180880] [2022-07-19 22:45:21,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323180880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:21,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:45:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928688354] [2022-07-19 22:45:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:21,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:45:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:45:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:45:21,134 INFO L87 Difference]: Start difference. First operand 2236 states and 3232 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) [2022-07-19 22:45:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:21,230 INFO L93 Difference]: Finished difference Result 2238 states and 3233 transitions. [2022-07-19 22:45:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:45:21,231 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 [2022-07-19 22:45:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:21,244 INFO L225 Difference]: With dead ends: 2238 [2022-07-19 22:45:21,244 INFO L226 Difference]: Without dead ends: 2235 [2022-07-19 22:45:21,247 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:21,248 INFO L413 NwaCegarLoop]: 3229 mSDtfsCounter, 3217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 3229 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 [2022-07-19 22:45:21,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3217 Valid, 3229 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:45:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-07-19 22:45:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2235. [2022-07-19 22:45:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1551 states have (on average 1.3417150225660863) internal successors, (2081), 1592 states have internal predecessors, (2081), 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) [2022-07-19 22:45:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3230 transitions. [2022-07-19 22:45:21,355 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3230 transitions. Word has length 18 [2022-07-19 22:45:21,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:21,356 INFO L495 AbstractCegarLoop]: Abstraction has 2235 states and 3230 transitions. [2022-07-19 22:45:21,356 INFO L496 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) [2022-07-19 22:45:21,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3230 transitions. [2022-07-19 22:45:21,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 22:45:21,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:21,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:45:21,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 22:45:21,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:21,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1126423667, now seen corresponding path program 1 times [2022-07-19 22:45:21,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:21,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017599670] [2022-07-19 22:45:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:21,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:45:21,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:21,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017599670] [2022-07-19 22:45:21,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017599670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:21,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:21,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:45:21,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634335480] [2022-07-19 22:45:21,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:21,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:45:21,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:21,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:45:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:45:21,433 INFO L87 Difference]: Start difference. First operand 2235 states and 3230 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) [2022-07-19 22:45:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:21,660 INFO L93 Difference]: Finished difference Result 5156 states and 7405 transitions. [2022-07-19 22:45:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:45:21,661 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 [2022-07-19 22:45:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:21,682 INFO L225 Difference]: With dead ends: 5156 [2022-07-19 22:45:21,682 INFO L226 Difference]: Without dead ends: 2927 [2022-07-19 22:45:21,693 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:21,700 INFO L413 NwaCegarLoop]: 3682 mSDtfsCounter, 1317 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:45:21,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 6488 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:45:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-07-19 22:45:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2924. [2022-07-19 22:45:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2023 states have (on average 1.3232822540781017) internal successors, (2677), 2085 states have internal predecessors, (2677), 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) [2022-07-19 22:45:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4129 transitions. [2022-07-19 22:45:21,849 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 4129 transitions. Word has length 19 [2022-07-19 22:45:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:21,850 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 4129 transitions. [2022-07-19 22:45:21,850 INFO L496 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) [2022-07-19 22:45:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 4129 transitions. [2022-07-19 22:45:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 22:45:21,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:21,861 INFO L195 NwaCegarLoop]: 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] [2022-07-19 22:45:21,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 22:45:21,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1530383769, now seen corresponding path program 1 times [2022-07-19 22:45:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887001707] [2022-07-19 22:45:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:45:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:45:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:45:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:45:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:45:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 22:45:22,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:22,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887001707] [2022-07-19 22:45:22,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887001707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:22,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:22,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:45:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366382087] [2022-07-19 22:45:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:22,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:45:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:45:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:45:22,044 INFO L87 Difference]: Start difference. First operand 2924 states and 4129 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) [2022-07-19 22:45:24,660 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 [] [2022-07-19 22:45:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:32,944 INFO L93 Difference]: Finished difference Result 6382 states and 9075 transitions. [2022-07-19 22:45:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:45:32,945 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 [2022-07-19 22:45:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:32,965 INFO L225 Difference]: With dead ends: 6382 [2022-07-19 22:45:32,965 INFO L226 Difference]: Without dead ends: 3473 [2022-07-19 22:45:32,977 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:32,978 INFO L413 NwaCegarLoop]: 2765 mSDtfsCounter, 2249 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 1618 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 6035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1618 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:45:32,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 5584 Invalid, 6035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1618 Valid, 4416 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-07-19 22:45:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2022-07-19 22:45:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2979. [2022-07-19 22:45:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2062 states have (on average 1.3205625606207565) internal successors, (2723), 2126 states have internal predecessors, (2723), 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) [2022-07-19 22:45:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4199 transitions. [2022-07-19 22:45:33,130 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4199 transitions. Word has length 56 [2022-07-19 22:45:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:33,131 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 4199 transitions. [2022-07-19 22:45:33,131 INFO L496 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) [2022-07-19 22:45:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4199 transitions. [2022-07-19 22:45:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 22:45:33,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:33,134 INFO L195 NwaCegarLoop]: 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] [2022-07-19 22:45:33,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 22:45:33,134 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1423408288, now seen corresponding path program 1 times [2022-07-19 22:45:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681120319] [2022-07-19 22:45:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:45:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:45:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:45:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:45:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:45:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 22:45:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681120319] [2022-07-19 22:45:33,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681120319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:33,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:33,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:45:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138366035] [2022-07-19 22:45:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:45:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:45:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:45:33,306 INFO L87 Difference]: Start difference. First operand 2979 states and 4199 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 22:45:35,587 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 [] [2022-07-19 22:45:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:39,158 INFO L93 Difference]: Finished difference Result 6043 states and 8621 transitions. [2022-07-19 22:45:39,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:45:39,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2022-07-19 22:45:39,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:39,178 INFO L225 Difference]: With dead ends: 6043 [2022-07-19 22:45:39,178 INFO L226 Difference]: Without dead ends: 3079 [2022-07-19 22:45:39,195 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:39,197 INFO L413 NwaCegarLoop]: 2962 mSDtfsCounter, 1199 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:45:39,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 5458 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2347 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-07-19 22:45:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2022-07-19 22:45:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2979. [2022-07-19 22:45:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2062 states have (on average 1.3176527643064986) internal successors, (2717), 2126 states have internal predecessors, (2717), 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) [2022-07-19 22:45:39,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4193 transitions. [2022-07-19 22:45:39,346 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4193 transitions. Word has length 59 [2022-07-19 22:45:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:39,348 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 4193 transitions. [2022-07-19 22:45:39,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 22:45:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4193 transitions. [2022-07-19 22:45:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:45:39,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:39,351 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:45:39,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 22:45:39,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:39,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -510939004, now seen corresponding path program 1 times [2022-07-19 22:45:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:39,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181786252] [2022-07-19 22:45:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:39,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:45:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:45:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:45:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 22:45:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:45:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 22:45:39,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:39,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181786252] [2022-07-19 22:45:39,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181786252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:39,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:39,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:45:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923335417] [2022-07-19 22:45:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:45:39,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:45:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:45:39,515 INFO L87 Difference]: Start difference. First operand 2979 states and 4193 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:45:41,773 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 [] [2022-07-19 22:45:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:44,211 INFO L93 Difference]: Finished difference Result 5069 states and 7078 transitions. [2022-07-19 22:45:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:45:44,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-07-19 22:45:44,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:44,226 INFO L225 Difference]: With dead ends: 5069 [2022-07-19 22:45:44,227 INFO L226 Difference]: Without dead ends: 2527 [2022-07-19 22:45:44,238 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:44,239 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 2867 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3130 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:45:44,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3130 Valid, 3657 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1490 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 22:45:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-07-19 22:45:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2408. [2022-07-19 22:45:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 1673 states have (on average 1.306634787806336) internal successors, (2186), 1719 states have internal predecessors, (2186), 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) [2022-07-19 22:45:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3309 transitions. [2022-07-19 22:45:44,340 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3309 transitions. Word has length 65 [2022-07-19 22:45:44,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:44,341 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3309 transitions. [2022-07-19 22:45:44,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:45:44,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3309 transitions. [2022-07-19 22:45:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:45:44,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:44,345 INFO L195 NwaCegarLoop]: 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] [2022-07-19 22:45:44,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 22:45:44,345 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2092234527, now seen corresponding path program 1 times [2022-07-19 22:45:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5671016] [2022-07-19 22:45:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:45:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:45:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:45:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:45:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:45:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:45:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:45:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 22:45:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:45:44,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5671016] [2022-07-19 22:45:44,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5671016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:45:44,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:45:44,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:45:44,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40782669] [2022-07-19 22:45:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:45:44,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:45:44,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:45:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:45:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:45:44,540 INFO L87 Difference]: Start difference. First operand 2408 states and 3309 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) [2022-07-19 22:45:47,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:45:49,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:45:51,197 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:45:53,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:45:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:45:59,079 INFO L93 Difference]: Finished difference Result 2557 states and 3525 transitions. [2022-07-19 22:45:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:45:59,079 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 [2022-07-19 22:45:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:45:59,093 INFO L225 Difference]: With dead ends: 2557 [2022-07-19 22:45:59,093 INFO L226 Difference]: Without dead ends: 2547 [2022-07-19 22:45:59,095 INFO L412 NwaCegarLoop]: 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 [2022-07-19 22:45:59,096 INFO L413 NwaCegarLoop]: 2385 mSDtfsCounter, 1145 mSDsluCounter, 4996 mSDsCounter, 0 mSdLazyCounter, 6746 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 7381 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 6746 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:45:59,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 7381 Invalid, 7252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 6746 Invalid, 4 Unknown, 0 Unchecked, 14.3s Time] [2022-07-19 22:45:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-07-19 22:45:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2413. [2022-07-19 22:45:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 1677 states have (on average 1.3059033989266546) internal successors, (2190), 1723 states have internal predecessors, (2190), 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) [2022-07-19 22:45:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3316 transitions. [2022-07-19 22:45:59,198 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3316 transitions. Word has length 65 [2022-07-19 22:45:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:45:59,199 INFO L495 AbstractCegarLoop]: Abstraction has 2413 states and 3316 transitions. [2022-07-19 22:45:59,199 INFO L496 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) [2022-07-19 22:45:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3316 transitions. [2022-07-19 22:45:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:45:59,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:45:59,201 INFO L195 NwaCegarLoop]: 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] [2022-07-19 22:45:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 22:45:59,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:45:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:45:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash -922869091, now seen corresponding path program 1 times [2022-07-19 22:45:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:45:59,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357282552] [2022-07-19 22:45:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:45:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:45:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 22:45:59,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 22:45:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 22:45:59,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 22:45:59,477 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 22:45:59,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 22:45:59,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 22:45:59,483 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:45:59,487 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 22:45:59,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:45:59 BoogieIcfgContainer [2022-07-19 22:45:59,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 22:45:59,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 22:45:59,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 22:45:59,567 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 22:45:59,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:45:19" (3/4) ... [2022-07-19 22:45:59,570 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 22:45:59,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 22:45:59,571 INFO L158 Benchmark]: Toolchain (without parser) took 51501.98ms. Allocated memory was 102.8MB in the beginning and 583.0MB in the end (delta: 480.2MB). Free memory was 73.3MB in the beginning and 147.7MB in the end (delta: -74.4MB). Peak memory consumption was 406.3MB. Max. memory is 16.1GB. [2022-07-19 22:45:59,572 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:45:59,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2688.01ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 73.3MB in the beginning and 65.8MB in the end (delta: 7.5MB). Peak memory consumption was 72.5MB. Max. memory is 16.1GB. [2022-07-19 22:45:59,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 317.79ms. Allocated memory is still 151.0MB. Free memory was 65.8MB in the beginning and 61.3MB in the end (delta: 4.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-07-19 22:45:59,573 INFO L158 Benchmark]: Boogie Preprocessor took 316.00ms. Allocated memory was 151.0MB in the beginning and 234.9MB in the end (delta: 83.9MB). Free memory was 61.3MB in the beginning and 132.4MB in the end (delta: -71.1MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2022-07-19 22:45:59,573 INFO L158 Benchmark]: RCFGBuilder took 7907.31ms. Allocated memory was 234.9MB in the beginning and 352.3MB in the end (delta: 117.4MB). Free memory was 132.4MB in the beginning and 156.5MB in the end (delta: -24.1MB). Peak memory consumption was 132.4MB. Max. memory is 16.1GB. [2022-07-19 22:45:59,574 INFO L158 Benchmark]: TraceAbstraction took 40263.01ms. Allocated memory was 352.3MB in the beginning and 583.0MB in the end (delta: 230.7MB). Free memory was 155.4MB in the beginning and 147.7MB in the end (delta: 7.8MB). Peak memory consumption was 238.5MB. Max. memory is 16.1GB. [2022-07-19 22:45:59,574 INFO L158 Benchmark]: Witness Printer took 3.94ms. Allocated memory is still 583.0MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:45:59,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2688.01ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 73.3MB in the beginning and 65.8MB in the end (delta: 7.5MB). Peak memory consumption was 72.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 317.79ms. Allocated memory is still 151.0MB. Free memory was 65.8MB in the beginning and 61.3MB in the end (delta: 4.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 316.00ms. Allocated memory was 151.0MB in the beginning and 234.9MB in the end (delta: 83.9MB). Free memory was 61.3MB in the beginning and 132.4MB in the end (delta: -71.1MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * RCFGBuilder took 7907.31ms. Allocated memory was 234.9MB in the beginning and 352.3MB in the end (delta: 117.4MB). Free memory was 132.4MB in the beginning and 156.5MB in the end (delta: -24.1MB). Peak memory consumption was 132.4MB. Max. memory is 16.1GB. * TraceAbstraction took 40263.01ms. Allocated memory was 352.3MB in the beginning and 583.0MB in the end (delta: 230.7MB). Free memory was 155.4MB in the beginning and 147.7MB in the end (delta: 7.8MB). Peak memory consumption was 238.5MB. Max. memory is 16.1GB. * Witness Printer took 3.94ms. Allocated memory is still 583.0MB. Free memory is still 147.7MB. 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, 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={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: VAL [__this_module={18446744073709551616:18446744073709551618}, 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=2, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10670] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551616:18446744073709551618}, 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=2, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10671] CALL vhost_net_ioctl(var_group2, var_vhost_net_ioctl_27_p1, var_vhost_net_ioctl_27_p2) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-17400}, lock={18446744073709551615:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-17400}, lock={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, ldv_func_arg1={18446744073709551615:-17400}, ldv_func_arg1={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, ldv_func_arg1={18446744073709551615:-17400}, ldv_func_arg1={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, \result={18446744073709551617:-4}, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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__={18446744073709551617:-4}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-17416}, experimental_zcopytx=0, get_current()={18446744073709551617:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-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={18446744073709551617:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-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={18446744073709551617:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-17416}, n={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-17416}, n={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={18446744073709551615:0}] [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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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={18446744073709551615:8}, lock={18446744073709551615:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, 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, 2248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 37.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 19513 SdHoareTripleChecker+Valid, 35.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18449 mSDsluCounter, 38273 SdHoareTripleChecker+Invalid, 32.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14084 mSDsCounter, 3951 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15012 IncrementalHoareTripleChecker+Invalid, 18970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3951 mSolverCounterUnsat, 24189 mSDtfsCounter, 15012 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=2979occurred 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: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 850 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 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 [2022-07-19 22:45:59,668 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-?-eb692b5 [2022-07-19 22:46:01,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:46:01,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:46:01,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:46:01,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:46:01,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:46:01,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:46:01,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:46:01,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:46:01,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:46:01,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:46:01,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:46:01,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:46:01,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:46:01,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:46:01,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:46:01,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:46:01,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:46:01,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:46:01,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:46:01,668 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:46:01,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:46:01,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:46:01,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:46:01,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:46:01,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:46:01,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:46:01,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:46:01,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:46:01,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:46:01,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:46:01,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:46:01,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:46:01,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:46:01,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:46:01,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:46:01,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:46:01,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:46:01,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:46:01,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:46:01,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:46:01,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:46:01,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 22:46:01,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:46:01,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:46:01,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:46:01,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:46:01,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:46:01,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:46:01,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:46:01,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:46:01,731 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:46:01,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:46:01,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:46:01,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:46:01,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:46:01,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:46:01,733 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 22:46:01,733 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 22:46:01,734 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 22:46:01,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:46:01,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:46:01,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:46:01,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:46:01,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:46:01,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:46:01,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:46:01,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:46:01,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:46:01,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:46:01,735 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 22:46:01,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 22:46:01,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:46:01,736 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:46:01,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:46:01,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 22:46:01,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-07-19 22:46:02,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:46:02,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:46:02,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:46:02,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:46:02,100 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:46:02,101 INFO L432 ainManager$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 [2022-07-19 22:46:02,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb22ffe9b/4428c727e8c74444a1b4b1ab91e2e7f5/FLAG3d472b947 [2022-07-19 22:46:02,904 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:46:02,906 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 [2022-07-19 22:46:02,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb22ffe9b/4428c727e8c74444a1b4b1ab91e2e7f5/FLAG3d472b947 [2022-07-19 22:46:03,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb22ffe9b/4428c727e8c74444a1b4b1ab91e2e7f5 [2022-07-19 22:46:03,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:46:03,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:46:03,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:46:03,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:46:03,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:46:03,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:46:03" (1/1) ... [2022-07-19 22:46:03,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477eb5a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:46:03, skipping insertion in model container [2022-07-19 22:46:03,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:46:03" (1/1) ... [2022-07-19 22:46:03,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:46:03,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:46:05,233 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:46:05,239 INFO L158 Benchmark]: Toolchain (without parser) took 1800.99ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.8MB in the beginning and 34.0MB in the end (delta: 1.9MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-07-19 22:46:05,239 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 29.8MB in the beginning and 29.8MB in the end (delta: 31.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:46:05,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1798.33ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.6MB in the beginning and 34.0MB in the end (delta: 1.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-07-19 22:46:05,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 29.8MB in the beginning and 29.8MB in the end (delta: 31.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1798.33ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.6MB in the beginning and 34.0MB in the end (delta: 1.7MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range