./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:27:12,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:27:12,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:27:12,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:27:12,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:27:12,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:27:12,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:27:12,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:27:12,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:27:12,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:27:12,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:27:12,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:27:12,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:27:12,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:27:12,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:27:12,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:27:12,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:27:12,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:27:12,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:27:12,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:27:12,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:27:12,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:27:12,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:27:12,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:27:12,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:27:12,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:27:12,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:27:12,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:27:12,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:27:12,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:27:12,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:27:12,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:27:12,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:27:12,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:27:12,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:27:12,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:27:12,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:27:12,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:27:12,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:27:12,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:27:12,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:27:12,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:27:12,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:27:12,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:27:12,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:27:12,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:27:12,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:27:12,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:27:12,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:27:12,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:27:12,398 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:27:12,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:27:12,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:27:12,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:27:12,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:27:12,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:27:12,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:27:12,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:27:12,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:27:12,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:27:12,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:27:12,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:27:12,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:27:12,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:27:12,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:27:12,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:27:12,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:27:12,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:27:12,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:27:12,402 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:27:12,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:27:12,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:27:12,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:27:12,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-14 17:27:12,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:27:12,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:27:12,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:27:12,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:27:12,670 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:27:12,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-14 17:27:12,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ab289a2/6f29a8e648c348e49e4313796af39f41/FLAGcb982f6da [2021-12-14 17:27:13,533 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:27:13,534 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 [2021-12-14 17:27:13,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ab289a2/6f29a8e648c348e49e4313796af39f41/FLAGcb982f6da [2021-12-14 17:27:14,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ab289a2/6f29a8e648c348e49e4313796af39f41 [2021-12-14 17:27:14,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:27:14,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:27:14,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:27:14,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:27:14,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:27:14,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f89c838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:14, skipping insertion in model container [2021-12-14 17:27:14,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:27:14" (1/1) ... [2021-12-14 17:27:14,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:27:14,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:27:15,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-14 17:27:15,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:27:15,919 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:27:16,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-14 17:27:16,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:27:16,386 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:27:16,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16 WrapperNode [2021-12-14 17:27:16,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:27:16,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:27:16,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:27:16,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:27:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:16,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:16,666 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2021-12-14 17:27:16,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:27:16,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:27:16,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:27:16,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:27:16,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:16,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:16,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:16,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:16,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:17,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:17,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:17,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:27:17,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:27:17,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:27:17,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:27:17,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (1/1) ... [2021-12-14 17:27:17,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:27:17,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:27:17,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:27:17,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:27:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-14 17:27:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-14 17:27:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-14 17:27:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-14 17:27:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-14 17:27:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-14 17:27:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-14 17:27:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-14 17:27:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-14 17:27:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-14 17:27:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-14 17:27:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-14 17:27:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:27:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-14 17:27:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-14 17:27:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:27:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-14 17:27:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-14 17:27:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-14 17:27:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-14 17:27:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-14 17:27:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-14 17:27:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-14 17:27:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-14 17:27:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-14 17:27:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-14 17:27:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-14 17:27:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-14 17:27:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:27:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:27:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-14 17:27:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-14 17:27:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:27:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:27:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-14 17:27:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-14 17:27:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:27:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:27:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:27:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:27:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-14 17:27:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-14 17:27:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-14 17:27:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-14 17:27:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-14 17:27:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-14 17:27:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-14 17:27:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-14 17:27:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-14 17:27:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-14 17:27:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-14 17:27:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-14 17:27:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-14 17:27:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-12-14 17:27:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-12-14 17:27:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:27:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:27:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:27:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:27:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-14 17:27:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-14 17:27:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-14 17:27:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-14 17:27:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-14 17:27:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-14 17:27:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:27:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:27:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:27:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-14 17:27:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-14 17:27:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-14 17:27:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-14 17:27:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:27:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:27:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:27:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-14 17:27:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-14 17:27:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-14 17:27:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-14 17:27:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:27:17,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:27:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-14 17:27:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-14 17:27:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-14 17:27:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-14 17:27:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:27:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:27:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-14 17:27:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-14 17:27:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-14 17:27:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-14 17:27:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:27:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-14 17:27:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:27:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:27:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:27:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:27:17,177 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-14 17:27:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-14 17:27:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:27:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:27:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-14 17:27:17,178 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-14 17:27:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-14 17:27:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-14 17:27:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-14 17:27:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-14 17:27:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 17:27:17,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 17:27:17,179 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-14 17:27:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-14 17:27:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:27:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:27:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:27:17,180 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-14 17:27:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-14 17:27:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-14 17:27:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-14 17:27:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:27:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-14 17:27:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-14 17:27:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:27:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-14 17:27:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-14 17:27:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-14 17:27:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-14 17:27:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-14 17:27:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-14 17:27:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-14 17:27:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-14 17:27:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:27:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:27:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-14 17:27:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-14 17:27:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-14 17:27:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:27:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:27:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:27:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-14 17:27:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-14 17:27:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-14 17:27:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-14 17:27:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-14 17:27:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-14 17:27:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-14 17:27:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-14 17:27:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-14 17:27:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-14 17:27:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-14 17:27:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-14 17:27:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-14 17:27:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-14 17:27:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-14 17:27:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-14 17:27:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:27:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:27:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:27:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:27:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-14 17:27:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-14 17:27:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-14 17:27:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-14 17:27:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:27:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-14 17:27:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-14 17:27:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 17:27:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 17:27:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-14 17:27:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-14 17:27:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:27:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-14 17:27:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-14 17:27:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-14 17:27:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-14 17:27:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-14 17:27:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-14 17:27:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:27:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-14 17:27:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-14 17:27:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:27:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-14 17:27:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-14 17:27:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:27:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:27:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-14 17:27:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-14 17:27:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:27:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:27:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-14 17:27:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-14 17:27:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-14 17:27:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-14 17:27:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:27:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:27:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-12-14 17:27:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-12-14 17:27:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 17:27:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 17:27:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-14 17:27:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-14 17:27:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-14 17:27:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-14 17:27:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:27:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:27:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-14 17:27:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-14 17:27:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-14 17:27:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-14 17:27:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-14 17:27:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-14 17:27:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-14 17:27:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-14 17:27:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-14 17:27:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-14 17:27:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:27:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:27:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-14 17:27:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-14 17:27:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:27:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:27:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:27:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:27:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-14 17:27:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-14 17:27:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:27:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-14 17:27:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-14 17:27:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-14 17:27:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-14 17:27:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-14 17:27:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-14 17:27:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:27:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:27:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:27:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:27:18,016 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:27:18,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,007 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,008 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2021-12-14 17:27:22,009 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-12-14 17:27:22,009 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,009 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2021-12-14 17:27:22,009 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-14 17:27:22,009 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2021-12-14 17:27:23,884 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-12-14 17:27:23,884 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-12-14 17:27:23,884 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,884 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2021-12-14 17:27:23,885 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-12-14 17:27:23,886 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2021-12-14 17:27:24,710 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:27:24,731 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:27:24,731 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:27:24,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:24 BoogieIcfgContainer [2021-12-14 17:27:24,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:27:24,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:27:24,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:27:24,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:27:24,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:27:14" (1/3) ... [2021-12-14 17:27:24,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4228e525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:27:24, skipping insertion in model container [2021-12-14 17:27:24,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:27:16" (2/3) ... [2021-12-14 17:27:24,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4228e525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:27:24, skipping insertion in model container [2021-12-14 17:27:24,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:24" (3/3) ... [2021-12-14 17:27:24,746 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-14 17:27:24,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:27:24,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:27:24,806 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:27:24,813 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:27:24,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:27:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2021-12-14 17:27:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 17:27:24,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:24,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:24,879 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -662016059, now seen corresponding path program 1 times [2021-12-14 17:27:24,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:24,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502597923] [2021-12-14 17:27:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:24,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:25,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502597923] [2021-12-14 17:27:25,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502597923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:25,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:25,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:25,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103614816] [2021-12-14 17:27:25,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:25,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:25,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,349 INFO L87 Difference]: Start difference. First operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:25,605 INFO L93 Difference]: Finished difference Result 4464 states and 6561 transitions. [2021-12-14 17:27:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-14 17:27:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:25,642 INFO L225 Difference]: With dead ends: 4464 [2021-12-14 17:27:25,643 INFO L226 Difference]: Without dead ends: 2228 [2021-12-14 17:27:25,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,669 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 3220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:25,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3220 Valid, 3230 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-12-14 17:27:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-12-14 17:27:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1542 states have (on average 1.3411154345006484) internal successors, (2068), 1585 states have internal predecessors, (2068), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-14 17:27:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3219 transitions. [2021-12-14 17:27:25,868 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3219 transitions. Word has length 16 [2021-12-14 17:27:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:25,869 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3219 transitions. [2021-12-14 17:27:25,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:25,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3219 transitions. [2021-12-14 17:27:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 17:27:25,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:25,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:25,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:27:25,872 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:25,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash 951309113, now seen corresponding path program 1 times [2021-12-14 17:27:25,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:25,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205121031] [2021-12-14 17:27:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:25,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:25,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:25,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205121031] [2021-12-14 17:27:25,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205121031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:25,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:25,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:25,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345212053] [2021-12-14 17:27:25,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:25,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:25,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:25,991 INFO L87 Difference]: Start difference. First operand 2228 states and 3219 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:26,094 INFO L93 Difference]: Finished difference Result 2230 states and 3220 transitions. [2021-12-14 17:27:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:26,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-14 17:27:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:26,109 INFO L225 Difference]: With dead ends: 2230 [2021-12-14 17:27:26,109 INFO L226 Difference]: Without dead ends: 2227 [2021-12-14 17:27:26,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,116 INFO L933 BasicCegarLoop]: 3216 mSDtfsCounter, 3205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:26,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 3216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-12-14 17:27:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-12-14 17:27:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1542 states have (on average 1.3404669260700388) internal successors, (2067), 1584 states have internal predecessors, (2067), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-14 17:27:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3217 transitions. [2021-12-14 17:27:26,287 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3217 transitions. Word has length 17 [2021-12-14 17:27:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:26,287 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3217 transitions. [2021-12-14 17:27:26,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3217 transitions. [2021-12-14 17:27:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:27:26,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:26,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:26,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:27:26,289 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash -575213240, now seen corresponding path program 1 times [2021-12-14 17:27:26,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:26,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213403662] [2021-12-14 17:27:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:26,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:26,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:26,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213403662] [2021-12-14 17:27:26,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213403662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:26,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:26,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:26,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120288467] [2021-12-14 17:27:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:26,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:26,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,380 INFO L87 Difference]: Start difference. First operand 2227 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:26,481 INFO L93 Difference]: Finished difference Result 2229 states and 3218 transitions. [2021-12-14 17:27:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:26,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-14 17:27:26,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:26,494 INFO L225 Difference]: With dead ends: 2229 [2021-12-14 17:27:26,494 INFO L226 Difference]: Without dead ends: 2226 [2021-12-14 17:27:26,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,501 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 3202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:26,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 3214 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-12-14 17:27:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2226. [2021-12-14 17:27:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1542 states have (on average 1.3398184176394292) internal successors, (2066), 1583 states have internal predecessors, (2066), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-12-14 17:27:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3215 transitions. [2021-12-14 17:27:26,618 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3215 transitions. Word has length 18 [2021-12-14 17:27:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:26,618 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3215 transitions. [2021-12-14 17:27:26,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3215 transitions. [2021-12-14 17:27:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 17:27:26,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:26,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:26,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:27:26,619 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash -652761060, now seen corresponding path program 1 times [2021-12-14 17:27:26,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:26,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041577653] [2021-12-14 17:27:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:26,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:27:26,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:26,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041577653] [2021-12-14 17:27:26,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041577653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:26,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:26,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:27:26,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724140266] [2021-12-14 17:27:26,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:26,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:27:26,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:27:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,689 INFO L87 Difference]: Start difference. First operand 2226 states and 3215 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:26,886 INFO L93 Difference]: Finished difference Result 5137 states and 7376 transitions. [2021-12-14 17:27:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:27:26,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-14 17:27:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:26,909 INFO L225 Difference]: With dead ends: 5137 [2021-12-14 17:27:26,909 INFO L226 Difference]: Without dead ends: 2913 [2021-12-14 17:27:26,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:27:26,928 INFO L933 BasicCegarLoop]: 3667 mSDtfsCounter, 1302 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:26,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 6466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:27:26,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2021-12-14 17:27:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2910. [2021-12-14 17:27:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2009 states have (on average 1.321553011448482) internal successors, (2655), 2071 states have internal predecessors, (2655), 721 states have call successors, (721), 183 states have call predecessors, (721), 179 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2021-12-14 17:27:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4107 transitions. [2021-12-14 17:27:27,099 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4107 transitions. Word has length 19 [2021-12-14 17:27:27,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:27,100 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4107 transitions. [2021-12-14 17:27:27,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:27:27,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4107 transitions. [2021-12-14 17:27:27,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 17:27:27,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:27,110 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:27,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:27:27,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:27,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:27,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1639297723, now seen corresponding path program 1 times [2021-12-14 17:27:27,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:27,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216449525] [2021-12-14 17:27:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:27,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:27:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:27:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:27:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:27:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:27,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:27,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216449525] [2021-12-14 17:27:27,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216449525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:27,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:27,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:27:27,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233664209] [2021-12-14 17:27:27,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:27,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:27:27,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:27,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:27:27,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:27:27,304 INFO L87 Difference]: Start difference. First operand 2910 states and 4107 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:27:29,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:34,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:39,394 INFO L93 Difference]: Finished difference Result 6348 states and 9025 transitions. [2021-12-14 17:27:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:27:39,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-12-14 17:27:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:39,416 INFO L225 Difference]: With dead ends: 6348 [2021-12-14 17:27:39,416 INFO L226 Difference]: Without dead ends: 3449 [2021-12-14 17:27:39,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:27:39,430 INFO L933 BasicCegarLoop]: 2762 mSDtfsCounter, 2218 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 3879 mSolverCounterSat, 1612 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 6101 SdHoareTripleChecker+Invalid, 5492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1612 IncrementalHoareTripleChecker+Valid, 3879 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:39,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 6101 Invalid, 5492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1612 Valid, 3879 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2021-12-14 17:27:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-12-14 17:27:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2965. [2021-12-14 17:27:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31884765625) internal successors, (2701), 2112 states have internal predecessors, (2701), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-12-14 17:27:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4177 transitions. [2021-12-14 17:27:39,575 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4177 transitions. Word has length 56 [2021-12-14 17:27:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:39,575 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4177 transitions. [2021-12-14 17:27:39,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:27:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4177 transitions. [2021-12-14 17:27:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 17:27:39,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:39,578 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:39,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:27:39,578 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash -963749432, now seen corresponding path program 1 times [2021-12-14 17:27:39,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:39,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591459806] [2021-12-14 17:27:39,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:39,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:27:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:27:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:27:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 17:27:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:39,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:39,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591459806] [2021-12-14 17:27:39,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591459806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:39,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:39,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:27:39,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081819901] [2021-12-14 17:27:39,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:39,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:27:39,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:39,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:27:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:27:39,742 INFO L87 Difference]: Start difference. First operand 2965 states and 4177 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 17:27:42,100 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:45,248 INFO L93 Difference]: Finished difference Result 6019 states and 8585 transitions. [2021-12-14 17:27:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:27:45,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2021-12-14 17:27:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:45,268 INFO L225 Difference]: With dead ends: 6019 [2021-12-14 17:27:45,268 INFO L226 Difference]: Without dead ends: 3065 [2021-12-14 17:27:45,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:27:45,287 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 1192 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5916 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:45,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5916 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1854 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-12-14 17:27:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2021-12-14 17:27:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2965. [2021-12-14 17:27:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31591796875) internal successors, (2695), 2112 states have internal predecessors, (2695), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-12-14 17:27:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4171 transitions. [2021-12-14 17:27:45,419 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4171 transitions. Word has length 62 [2021-12-14 17:27:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:45,421 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4171 transitions. [2021-12-14 17:27:45,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 17:27:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4171 transitions. [2021-12-14 17:27:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 17:27:45,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:45,425 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:45,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:27:45,425 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:45,426 INFO L85 PathProgramCache]: Analyzing trace with hash -566496063, now seen corresponding path program 1 times [2021-12-14 17:27:45,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:45,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864301151] [2021-12-14 17:27:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:45,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:27:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:27:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:27:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:45,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:45,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864301151] [2021-12-14 17:27:45,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864301151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:45,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:45,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:27:45,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429431463] [2021-12-14 17:27:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:45,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:27:45,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:27:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:27:45,576 INFO L87 Difference]: Start difference. First operand 2965 states and 4171 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:27:47,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:27:50,116 INFO L93 Difference]: Finished difference Result 5045 states and 7042 transitions. [2021-12-14 17:27:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:27:50,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2021-12-14 17:27:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:27:50,131 INFO L225 Difference]: With dead ends: 5045 [2021-12-14 17:27:50,131 INFO L226 Difference]: Without dead ends: 2513 [2021-12-14 17:27:50,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:27:50,144 INFO L933 BasicCegarLoop]: 2667 mSDtfsCounter, 2851 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:27:50,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3618 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-14 17:27:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-12-14 17:27:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2394. [2021-12-14 17:27:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1659 states have (on average 1.3044002411091018) internal successors, (2164), 1705 states have internal predecessors, (2164), 569 states have call successors, (569), 170 states have call predecessors, (569), 165 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2021-12-14 17:27:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3287 transitions. [2021-12-14 17:27:50,241 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3287 transitions. Word has length 62 [2021-12-14 17:27:50,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:27:50,242 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3287 transitions. [2021-12-14 17:27:50,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 17:27:50,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3287 transitions. [2021-12-14 17:27:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 17:27:50,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:27:50,245 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:27:50,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:27:50,246 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:27:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:27:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2018660585, now seen corresponding path program 1 times [2021-12-14 17:27:50,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:27:50,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758973137] [2021-12-14 17:27:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:27:50,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:27:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:27:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:27:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:27:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:27:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:27:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:27:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:27:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:27:50,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:27:50,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758973137] [2021-12-14 17:27:50,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758973137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:27:50,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:27:50,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:27:50,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077001082] [2021-12-14 17:27:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:27:50,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:27:50,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:27:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:27:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:27:50,436 INFO L87 Difference]: Start difference. First operand 2394 states and 3287 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 17:27:52,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:54,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:57,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:27:59,045 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 [] [2021-12-14 17:28:03,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:28:03,867 INFO L93 Difference]: Finished difference Result 2543 states and 3503 transitions. [2021-12-14 17:28:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:28:03,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2021-12-14 17:28:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:28:03,878 INFO L225 Difference]: With dead ends: 2543 [2021-12-14 17:28:03,878 INFO L226 Difference]: Without dead ends: 2533 [2021-12-14 17:28:03,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:28:03,880 INFO L933 BasicCegarLoop]: 2368 mSDtfsCounter, 1138 mSDsluCounter, 6492 mSDsCounter, 0 mSdLazyCounter, 5173 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:28:03,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 8860 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 5173 Invalid, 4 Unknown, 0 Unchecked, 13.3s Time] [2021-12-14 17:28:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-12-14 17:28:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2399. [2021-12-14 17:28:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1663 states have (on average 1.3036680697534575) internal successors, (2168), 1709 states have internal predecessors, (2168), 569 states have call successors, (569), 170 states have call predecessors, (569), 166 states have return successors, (557), 548 states have call predecessors, (557), 554 states have call successors, (557) [2021-12-14 17:28:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3294 transitions. [2021-12-14 17:28:03,979 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3294 transitions. Word has length 65 [2021-12-14 17:28:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:28:03,979 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3294 transitions. [2021-12-14 17:28:03,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 17:28:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3294 transitions. [2021-12-14 17:28:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 17:28:03,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:28:03,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:03,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:28:03,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:28:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:28:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1285989531, now seen corresponding path program 1 times [2021-12-14 17:28:03,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:28:03,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703581827] [2021-12-14 17:28:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:28:03,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:28:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 17:28:04,058 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 17:28:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 17:28:04,219 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 17:28:04,219 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 17:28:04,220 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 17:28:04,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:28:04,224 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:28:04,226 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 17:28:04,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:28:04 BoogieIcfgContainer [2021-12-14 17:28:04,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 17:28:04,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 17:28:04,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 17:28:04,315 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 17:28:04,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:27:24" (3/4) ... [2021-12-14 17:28:04,318 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 17:28:04,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 17:28:04,319 INFO L158 Benchmark]: Toolchain (without parser) took 50263.57ms. Allocated memory was 86.0MB in the beginning and 748.7MB in the end (delta: 662.7MB). Free memory was 54.3MB in the beginning and 309.8MB in the end (delta: -255.5MB). Peak memory consumption was 407.5MB. Max. memory is 16.1GB. [2021-12-14 17:28:04,319 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 56.7MB in the beginning and 56.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:28:04,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2330.15ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 54.3MB in the beginning and 76.7MB in the end (delta: -22.4MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2021-12-14 17:28:04,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 278.04ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 42.4MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-12-14 17:28:04,320 INFO L158 Benchmark]: Boogie Preprocessor took 420.76ms. Allocated memory was 142.6MB in the beginning and 230.7MB in the end (delta: 88.1MB). Free memory was 42.4MB in the beginning and 119.9MB in the end (delta: -77.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-14 17:28:04,320 INFO L158 Benchmark]: RCFGBuilder took 7646.02ms. Allocated memory was 230.7MB in the beginning and 417.3MB in the end (delta: 186.6MB). Free memory was 119.9MB in the beginning and 311.8MB in the end (delta: -192.0MB). Peak memory consumption was 185.5MB. Max. memory is 16.1GB. [2021-12-14 17:28:04,321 INFO L158 Benchmark]: TraceAbstraction took 39577.75ms. Allocated memory was 417.3MB in the beginning and 748.7MB in the end (delta: 331.4MB). Free memory was 310.8MB in the beginning and 309.8MB in the end (delta: 977.2kB). Peak memory consumption was 333.4MB. Max. memory is 16.1GB. [2021-12-14 17:28:04,321 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 748.7MB. Free memory is still 309.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:28:04,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 56.7MB in the beginning and 56.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2330.15ms. Allocated memory was 86.0MB in the beginning and 142.6MB in the end (delta: 56.6MB). Free memory was 54.3MB in the beginning and 76.7MB in the end (delta: -22.4MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 278.04ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 42.4MB in the end (delta: 34.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 420.76ms. Allocated memory was 142.6MB in the beginning and 230.7MB in the end (delta: 88.1MB). Free memory was 42.4MB in the beginning and 119.9MB in the end (delta: -77.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * RCFGBuilder took 7646.02ms. Allocated memory was 230.7MB in the beginning and 417.3MB in the end (delta: 186.6MB). Free memory was 119.9MB in the beginning and 311.8MB in the end (delta: -192.0MB). Peak memory consumption was 185.5MB. Max. memory is 16.1GB. * TraceAbstraction took 39577.75ms. Allocated memory was 417.3MB in the beginning and 748.7MB in the end (delta: 331.4MB). Free memory was 310.8MB in the beginning and 309.8MB in the end (delta: 977.2kB). Peak memory consumption was 333.4MB. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 748.7MB. Free memory is still 309.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=-2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=4294967295, \result={0:4294967295}, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=4294967295, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={8589934595:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={8589934595:-17400}, lock={8589934595:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934595:-17400}, lock={8589934595:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934595:-17400}, ldv_func_arg1={8589934595:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934595:-17400}, ldv_func_arg1={8589934595:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={8589934594:-4}, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={8589934594:-4}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, experimental_zcopytx=0, get_current()={8589934594:-4}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-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={8589934594:-4}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-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={8589934594:-4}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={8589934595:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934595:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934595:8}, lock={8589934595:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 39.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 19392 SdHoareTripleChecker+Valid, 34.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18328 mSDsluCounter, 40621 SdHoareTripleChecker+Invalid, 32.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16549 mSDsCounter, 3945 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12402 IncrementalHoareTripleChecker+Invalid, 16354 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3945 mSolverCounterUnsat, 24072 mSDtfsCounter, 12402 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2965occurred in iteration=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, 840 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 17:28:04,435 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:28:06,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:28:06,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:28:06,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:28:06,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:28:06,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:28:06,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:28:06,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:28:06,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:28:06,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:28:06,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:28:06,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:28:06,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:28:06,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:28:06,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:28:06,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:28:06,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:28:06,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:28:06,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:28:06,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:28:06,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:28:06,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:28:06,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:28:06,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:28:06,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:28:06,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:28:06,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:28:06,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:28:06,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:28:06,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:28:06,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:28:06,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:28:06,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:28:06,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:28:06,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:28:06,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:28:06,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:28:06,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:28:06,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:28:06,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:28:06,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:28:06,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-14 17:28:06,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:28:06,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:28:06,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:28:06,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:28:06,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:28:06,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:28:06,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:28:06,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:28:06,292 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:28:06,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:28:06,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:28:06,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:28:06,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:28:06,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:28:06,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 17:28:06,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 17:28:06,294 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 17:28:06,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:28:06,294 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:28:06,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:28:06,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:28:06,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:28:06,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:28:06,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:28:06,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:28:06,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:28:06,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:28:06,296 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 17:28:06,296 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 17:28:06,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:28:06,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:28:06,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:28:06,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:28:06,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 17:28:06,297 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-14 17:28:06,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:28:06,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:28:06,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:28:06,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:28:06,647 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:28:06,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-14 17:28:06,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedf057e1/59b6a2b337464f4d9b474905698f2629/FLAGc1b5c8b1a [2021-12-14 17:28:07,501 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:28:07,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-14 17:28:07,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedf057e1/59b6a2b337464f4d9b474905698f2629/FLAGc1b5c8b1a [2021-12-14 17:28:07,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedf057e1/59b6a2b337464f4d9b474905698f2629 [2021-12-14 17:28:07,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:28:07,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:28:07,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:28:07,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:28:07,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:28:07,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:28:07" (1/1) ... [2021-12-14 17:28:07,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15869928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:28:07, skipping insertion in model container [2021-12-14 17:28:07,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:28:07" (1/1) ... [2021-12-14 17:28:07,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:28:07,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:28:09,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-12-14 17:28:09,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:28:09,847 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 17:28:09,917 INFO L178 MainTranslator]: Built tables and reachable declarations