./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 02:08:25,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 02:08:25,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 02:08:25,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 02:08:25,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 02:08:25,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 02:08:25,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 02:08:25,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 02:08:25,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 02:08:25,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 02:08:25,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 02:08:25,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 02:08:25,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 02:08:25,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 02:08:25,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 02:08:25,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 02:08:25,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 02:08:25,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 02:08:25,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 02:08:25,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 02:08:25,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 02:08:25,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 02:08:25,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 02:08:25,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 02:08:25,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 02:08:25,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 02:08:25,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 02:08:25,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 02:08:25,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 02:08:25,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 02:08:25,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 02:08:25,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 02:08:25,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 02:08:25,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 02:08:25,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 02:08:25,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 02:08:25,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 02:08:25,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 02:08:25,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 02:08:25,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 02:08:25,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 02:08:25,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 02:08:25,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 02:08:25,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 02:08:25,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 02:08:25,542 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 02:08:25,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 02:08:25,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 02:08:25,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 02:08:25,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 02:08:25,544 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 02:08:25,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 02:08:25,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 02:08:25,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 02:08:25,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 02:08:25,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 02:08:25,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 02:08:25,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 02:08:25,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 02:08:25,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 02:08:25,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 02:08:25,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 02:08:25,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 02:08:25,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 02:08:25,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 02:08:25,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 02:08:25,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 02:08:25,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 02:08:25,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 02:08:25,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 02:08:25,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 02:08:25,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 02:08:25,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 02:08:25,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-18 02:08:25,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 02:08:25,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 02:08:25,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 02:08:25,750 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 02:08:25,751 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 02:08:25,752 INFO L432 ainManager$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 [2021-12-18 02:08:25,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7f73475/2a7ab90530634502875195ff95861f71/FLAGb2b23b4b8 [2021-12-18 02:08:26,365 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 02:08:26,365 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 [2021-12-18 02:08:26,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7f73475/2a7ab90530634502875195ff95861f71/FLAGb2b23b4b8 [2021-12-18 02:08:26,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7f73475/2a7ab90530634502875195ff95861f71 [2021-12-18 02:08:26,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 02:08:26,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 02:08:26,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 02:08:26,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 02:08:26,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 02:08:26,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:08:26" (1/1) ... [2021-12-18 02:08:26,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679f5e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:26, skipping insertion in model container [2021-12-18 02:08:26,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:08:26" (1/1) ... [2021-12-18 02:08:26,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 02:08:26,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 02:08:28,593 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] [2021-12-18 02:08:28,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:08:28,723 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 02:08:28,949 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] [2021-12-18 02:08:28,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:08:29,001 INFO L208 MainTranslator]: Completed translation [2021-12-18 02:08:29,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29 WrapperNode [2021-12-18 02:08:29,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 02:08:29,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 02:08:29,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 02:08:29,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 02:08:29,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,250 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6648 [2021-12-18 02:08:29,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 02:08:29,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 02:08:29,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 02:08:29,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 02:08:29,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 02:08:29,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 02:08:29,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 02:08:29,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 02:08:29,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (1/1) ... [2021-12-18 02:08:29,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 02:08:29,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 02:08:29,529 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) [2021-12-18 02:08:29,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 02:08:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-18 02:08:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-18 02:08:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-18 02:08:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-18 02:08:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-18 02:08:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-18 02:08:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-18 02:08:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-18 02:08:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-18 02:08:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-18 02:08:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-18 02:08:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-18 02:08:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 02:08:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-18 02:08:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-18 02:08:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 02:08:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-18 02:08:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-18 02:08:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-18 02:08:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-18 02:08:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-18 02:08:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-18 02:08:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-18 02:08:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-18 02:08:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-18 02:08:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-18 02:08:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-18 02:08:29,610 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-18 02:08:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 02:08:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 02:08:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-18 02:08:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-18 02:08:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 02:08:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 02:08:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-18 02:08:29,611 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-18 02:08:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 02:08:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 02:08:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 02:08:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 02:08:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-18 02:08:29,612 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-18 02:08:29,612 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-18 02:08:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-18 02:08:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-18 02:08:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-18 02:08:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-18 02:08:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-18 02:08:29,613 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-18 02:08:29,613 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-18 02:08:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-18 02:08:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-18 02:08:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-18 02:08:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-12-18 02:08:29,614 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-12-18 02:08:29,614 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 02:08:29,615 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 02:08:29,615 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 02:08:29,615 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 02:08:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-18 02:08:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-18 02:08:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-18 02:08:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-18 02:08:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-18 02:08:29,616 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-18 02:08:29,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 02:08:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 02:08:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 02:08:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-18 02:08:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-18 02:08:29,617 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-18 02:08:29,617 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-18 02:08:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 02:08:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 02:08:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 02:08:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-18 02:08:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-18 02:08:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-18 02:08:29,618 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-18 02:08:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 02:08:29,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 02:08:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-18 02:08:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-18 02:08:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-18 02:08:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-18 02:08:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 02:08:29,619 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 02:08:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-18 02:08:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-18 02:08:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-18 02:08:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-18 02:08:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 02:08:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 02:08:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-18 02:08:29,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-18 02:08:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 02:08:29,621 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 02:08:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-18 02:08:29,621 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-18 02:08:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 02:08:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 02:08:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-18 02:08:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-18 02:08:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-18 02:08:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-18 02:08:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-18 02:08:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-18 02:08:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-18 02:08:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-18 02:08:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-18 02:08:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-18 02:08:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 02:08:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 02:08:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 02:08:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-18 02:08:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-18 02:08:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-18 02:08:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-18 02:08:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 02:08:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-18 02:08:29,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-18 02:08:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 02:08:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-18 02:08:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-18 02:08:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-18 02:08:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-18 02:08:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-18 02:08:29,629 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-18 02:08:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-18 02:08:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-18 02:08:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 02:08:29,633 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 02:08:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-18 02:08:29,633 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-18 02:08:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-18 02:08:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 02:08:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 02:08:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 02:08:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-18 02:08:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-18 02:08:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-18 02:08:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-18 02:08:29,634 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-18 02:08:29,634 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-18 02:08:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-18 02:08:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-18 02:08:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-18 02:08:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-18 02:08:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-18 02:08:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-18 02:08:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-18 02:08:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-18 02:08:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-18 02:08:29,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-18 02:08:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-18 02:08:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-18 02:08:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 02:08:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 02:08:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-18 02:08:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-18 02:08:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-18 02:08:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-18 02:08:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 02:08:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-18 02:08:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-18 02:08:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-18 02:08:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-18 02:08:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-18 02:08:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-18 02:08:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 02:08:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-18 02:08:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-18 02:08:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-18 02:08:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-18 02:08:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-18 02:08:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-18 02:08:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 02:08:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-18 02:08:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-18 02:08:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 02:08:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-18 02:08:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-18 02:08:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 02:08:29,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 02:08:29,638 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-18 02:08:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-18 02:08:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-18 02:08:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-18 02:08:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-18 02:08:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-18 02:08:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-18 02:08:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-18 02:08:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 02:08:29,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 02:08:29,639 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-12-18 02:08:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-12-18 02:08:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-18 02:08:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-18 02:08:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-18 02:08:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-18 02:08:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-18 02:08:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-18 02:08:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 02:08:29,640 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 02:08:29,640 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-18 02:08:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-18 02:08:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-18 02:08:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-18 02:08:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-18 02:08:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-18 02:08:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-18 02:08:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-18 02:08:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-18 02:08:29,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-18 02:08:29,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 02:08:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 02:08:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-18 02:08:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-18 02:08:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 02:08:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 02:08:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 02:08:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 02:08:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-18 02:08:29,642 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-18 02:08:29,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 02:08:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-18 02:08:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-18 02:08:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-18 02:08:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-18 02:08:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-18 02:08:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-18 02:08:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 02:08:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 02:08:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 02:08:29,643 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 02:08:30,333 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 02:08:30,336 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 02:08:33,973 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 [2021-12-18 02:08:33,974 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; [2021-12-18 02:08:33,974 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 [2021-12-18 02:08:33,974 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; [2021-12-18 02:08:33,974 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-12-18 02:08:33,974 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-12-18 02:08:33,974 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; [2021-12-18 02:08:33,974 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; [2021-12-18 02:08:33,975 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-12-18 02:08:33,977 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-12-18 02:08:33,977 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-12-18 02:08:33,977 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; [2021-12-18 02:08:33,977 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; [2021-12-18 02:08:33,977 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-12-18 02:08:33,977 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; [2021-12-18 02:08:33,977 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; [2021-12-18 02:08:33,977 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; [2021-12-18 02:08:33,977 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 [2021-12-18 02:08:33,978 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; [2021-12-18 02:08:33,978 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; [2021-12-18 02:08:33,978 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); [2021-12-18 02:08:33,978 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; [2021-12-18 02:08:33,978 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; [2021-12-18 02:08:33,979 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; [2021-12-18 02:08:33,979 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; [2021-12-18 02:08:36,746 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 [2021-12-18 02:08:36,746 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; [2021-12-18 02:08:36,746 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; [2021-12-18 02:08:36,746 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; [2021-12-18 02:08:36,746 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-12-18 02:08:36,747 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-12-18 02:08:36,747 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-12-18 02:08:36,747 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 [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-12-18 02:08:36,747 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-12-18 02:08:36,747 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); [2021-12-18 02:08:36,747 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 [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:36,747 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-12-18 02:08:36,747 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; [2021-12-18 02:08:37,448 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 02:08:37,485 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 02:08:37,485 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 02:08:37,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:08:37 BoogieIcfgContainer [2021-12-18 02:08:37,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 02:08:37,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 02:08:37,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 02:08:37,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 02:08:37,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 02:08:26" (1/3) ... [2021-12-18 02:08:37,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b544525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:08:37, skipping insertion in model container [2021-12-18 02:08:37,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:08:29" (2/3) ... [2021-12-18 02:08:37,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b544525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:08:37, skipping insertion in model container [2021-12-18 02:08:37,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:08:37" (3/3) ... [2021-12-18 02:08:37,495 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-18 02:08:37,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 02:08:37,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 02:08:37,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 02:08:37,613 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 [2021-12-18 02:08:37,613 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 02:08:37,716 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) [2021-12-18 02:08:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 02:08:37,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:37,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:08:37,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash -662016059, now seen corresponding path program 1 times [2021-12-18 02:08:37,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:37,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114269513] [2021-12-18 02:08:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:37,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:08:38,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:38,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114269513] [2021-12-18 02:08:38,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114269513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:38,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:38,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:08:38,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459179370] [2021-12-18 02:08:38,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:38,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:08:38,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:08:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:08:38,354 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) [2021-12-18 02:08:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:38,696 INFO L93 Difference]: Finished difference Result 4464 states and 6561 transitions. [2021-12-18 02:08:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:08:38,699 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 [2021-12-18 02:08:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:38,752 INFO L225 Difference]: With dead ends: 4464 [2021-12-18 02:08:38,752 INFO L226 Difference]: Without dead ends: 2228 [2021-12-18 02:08:38,781 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 [2021-12-18 02:08:38,785 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 [2021-12-18 02:08:38,786 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] [2021-12-18 02:08:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-12-18 02:08:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-12-18 02:08:38,981 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) [2021-12-18 02:08:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3219 transitions. [2021-12-18 02:08:39,000 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3219 transitions. Word has length 16 [2021-12-18 02:08:39,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:39,002 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3219 transitions. [2021-12-18 02:08:39,002 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) [2021-12-18 02:08:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3219 transitions. [2021-12-18 02:08:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 02:08:39,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:39,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:08:39,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 02:08:39,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:39,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:39,006 INFO L85 PathProgramCache]: Analyzing trace with hash 951309113, now seen corresponding path program 1 times [2021-12-18 02:08:39,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:39,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112179480] [2021-12-18 02:08:39,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:39,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:08:39,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:39,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112179480] [2021-12-18 02:08:39,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112179480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:39,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:39,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:08:39,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991816062] [2021-12-18 02:08:39,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:39,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:08:39,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:08:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:08:39,168 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) [2021-12-18 02:08:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:39,243 INFO L93 Difference]: Finished difference Result 2230 states and 3220 transitions. [2021-12-18 02:08:39,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:08:39,243 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 [2021-12-18 02:08:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:39,254 INFO L225 Difference]: With dead ends: 2230 [2021-12-18 02:08:39,254 INFO L226 Difference]: Without dead ends: 2227 [2021-12-18 02:08:39,260 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 [2021-12-18 02:08:39,261 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 [2021-12-18 02:08:39,262 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] [2021-12-18 02:08:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-12-18 02:08:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-12-18 02:08:39,325 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) [2021-12-18 02:08:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3217 transitions. [2021-12-18 02:08:39,336 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3217 transitions. Word has length 17 [2021-12-18 02:08:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:39,337 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3217 transitions. [2021-12-18 02:08:39,337 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) [2021-12-18 02:08:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3217 transitions. [2021-12-18 02:08:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 02:08:39,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:39,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:08:39,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 02:08:39,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash -575213240, now seen corresponding path program 1 times [2021-12-18 02:08:39,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:39,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669791842] [2021-12-18 02:08:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:39,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:08:39,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:39,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669791842] [2021-12-18 02:08:39,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669791842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:39,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:39,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:08:39,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369923471] [2021-12-18 02:08:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:39,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:08:39,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:08:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:08:39,407 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) [2021-12-18 02:08:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:39,485 INFO L93 Difference]: Finished difference Result 2229 states and 3218 transitions. [2021-12-18 02:08:39,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:08:39,486 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 [2021-12-18 02:08:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:39,495 INFO L225 Difference]: With dead ends: 2229 [2021-12-18 02:08:39,495 INFO L226 Difference]: Without dead ends: 2226 [2021-12-18 02:08:39,497 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 [2021-12-18 02:08:39,502 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 [2021-12-18 02:08:39,503 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] [2021-12-18 02:08:39,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-12-18 02:08:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2226. [2021-12-18 02:08:39,569 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) [2021-12-18 02:08:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3215 transitions. [2021-12-18 02:08:39,579 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3215 transitions. Word has length 18 [2021-12-18 02:08:39,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:39,579 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3215 transitions. [2021-12-18 02:08:39,579 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) [2021-12-18 02:08:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3215 transitions. [2021-12-18 02:08:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 02:08:39,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:39,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:08:39,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 02:08:39,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash -652761060, now seen corresponding path program 1 times [2021-12-18 02:08:39,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:39,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73946371] [2021-12-18 02:08:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:39,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:39,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:08:39,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:39,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73946371] [2021-12-18 02:08:39,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73946371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:39,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:39,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:08:39,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919518003] [2021-12-18 02:08:39,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:39,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:08:39,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:08:39,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:08:39,702 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) [2021-12-18 02:08:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:39,857 INFO L93 Difference]: Finished difference Result 5137 states and 7376 transitions. [2021-12-18 02:08:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:08:39,857 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 [2021-12-18 02:08:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:39,878 INFO L225 Difference]: With dead ends: 5137 [2021-12-18 02:08:39,878 INFO L226 Difference]: Without dead ends: 2913 [2021-12-18 02:08:39,892 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 [2021-12-18 02:08:39,897 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 [2021-12-18 02:08:39,898 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] [2021-12-18 02:08:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2021-12-18 02:08:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2910. [2021-12-18 02:08:40,017 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) [2021-12-18 02:08:40,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4107 transitions. [2021-12-18 02:08:40,029 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4107 transitions. Word has length 19 [2021-12-18 02:08:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:40,030 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4107 transitions. [2021-12-18 02:08:40,030 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) [2021-12-18 02:08:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4107 transitions. [2021-12-18 02:08:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-18 02:08:40,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:40,039 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] [2021-12-18 02:08:40,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 02:08:40,040 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1639297723, now seen corresponding path program 1 times [2021-12-18 02:08:40,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:40,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235322834] [2021-12-18 02:08:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:40,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 02:08:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 02:08:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 02:08:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 02:08:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 02:08:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:08:40,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:40,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235322834] [2021-12-18 02:08:40,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235322834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:40,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:40,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 02:08:40,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292902491] [2021-12-18 02:08:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:40,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 02:08:40,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 02:08:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:08:40,214 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) [2021-12-18 02:08:42,657 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 [] [2021-12-18 02:08:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:49,704 INFO L93 Difference]: Finished difference Result 6348 states and 9025 transitions. [2021-12-18 02:08:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 02:08:49,705 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 [2021-12-18 02:08:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:49,729 INFO L225 Difference]: With dead ends: 6348 [2021-12-18 02:08:49,729 INFO L226 Difference]: Without dead ends: 3449 [2021-12-18 02:08:49,740 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 [2021-12-18 02:08:49,741 INFO L933 BasicCegarLoop]: 2761 mSDtfsCounter, 2219 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 1610 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 6097 SdHoareTripleChecker+Invalid, 5494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-18 02:08:49,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2517 Valid, 6097 Invalid, 5494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 3883 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-18 02:08:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-12-18 02:08:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2965. [2021-12-18 02:08:49,835 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) [2021-12-18 02:08:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4177 transitions. [2021-12-18 02:08:49,846 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4177 transitions. Word has length 56 [2021-12-18 02:08:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:49,846 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4177 transitions. [2021-12-18 02:08:49,846 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) [2021-12-18 02:08:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4177 transitions. [2021-12-18 02:08:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-18 02:08:49,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:49,848 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] [2021-12-18 02:08:49,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 02:08:49,848 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash -963749432, now seen corresponding path program 1 times [2021-12-18 02:08:49,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:49,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287740240] [2021-12-18 02:08:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:49,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:08:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 02:08:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 02:08:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 02:08:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:08:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:08:49,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:49,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287740240] [2021-12-18 02:08:49,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287740240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:49,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:49,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:08:49,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961594767] [2021-12-18 02:08:49,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:49,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:08:49,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:08:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:08:49,985 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) [2021-12-18 02:08:52,177 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 [] [2021-12-18 02:08:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:55,067 INFO L93 Difference]: Finished difference Result 6019 states and 8585 transitions. [2021-12-18 02:08:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 02:08:55,068 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 [2021-12-18 02:08:55,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:55,086 INFO L225 Difference]: With dead ends: 6019 [2021-12-18 02:08:55,086 INFO L226 Difference]: Without dead ends: 3065 [2021-12-18 02:08:55,100 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 [2021-12-18 02:08:55,101 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 1192 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5913 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 02:08:55,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5913 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1854 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 02:08:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2021-12-18 02:08:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2965. [2021-12-18 02:08:55,205 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) [2021-12-18 02:08:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4171 transitions. [2021-12-18 02:08:55,218 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4171 transitions. Word has length 62 [2021-12-18 02:08:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:55,220 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4171 transitions. [2021-12-18 02:08:55,221 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) [2021-12-18 02:08:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4171 transitions. [2021-12-18 02:08:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-18 02:08:55,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:55,224 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] [2021-12-18 02:08:55,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 02:08:55,224 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash -566496063, now seen corresponding path program 1 times [2021-12-18 02:08:55,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:55,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988229174] [2021-12-18 02:08:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:55,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 02:08:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 02:08:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 02:08:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 02:08:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:08:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:08:55,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:55,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988229174] [2021-12-18 02:08:55,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988229174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:55,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:55,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:08:55,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594025200] [2021-12-18 02:08:55,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:55,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:08:55,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:08:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:08:55,381 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) [2021-12-18 02:08:57,675 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 [] [2021-12-18 02:08:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:08:59,598 INFO L93 Difference]: Finished difference Result 5045 states and 7042 transitions. [2021-12-18 02:08:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 02:08:59,599 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 [2021-12-18 02:08:59,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:08:59,611 INFO L225 Difference]: With dead ends: 5045 [2021-12-18 02:08:59,611 INFO L226 Difference]: Without dead ends: 2513 [2021-12-18 02:08:59,635 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 [2021-12-18 02:08:59,636 INFO L933 BasicCegarLoop]: 2667 mSDtfsCounter, 2851 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:08:59,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3618 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-12-18 02:08:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-12-18 02:08:59,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2394. [2021-12-18 02:08:59,710 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) [2021-12-18 02:08:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3287 transitions. [2021-12-18 02:08:59,717 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3287 transitions. Word has length 62 [2021-12-18 02:08:59,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:08:59,718 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3287 transitions. [2021-12-18 02:08:59,718 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) [2021-12-18 02:08:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3287 transitions. [2021-12-18 02:08:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 02:08:59,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:08:59,721 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] [2021-12-18 02:08:59,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 02:08:59,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:08:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:08:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2018660585, now seen corresponding path program 1 times [2021-12-18 02:08:59,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:08:59,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212975485] [2021-12-18 02:08:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:08:59,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:08:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:08:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 02:08:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 02:08:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 02:08:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 02:08:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:08:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:08:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:08:59,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:08:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212975485] [2021-12-18 02:08:59,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212975485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:08:59,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:08:59,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 02:08:59,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181780174] [2021-12-18 02:08:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:08:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 02:08:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:08:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 02:08:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 02:08:59,859 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) [2021-12-18 02:09:02,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:09:04,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:09:06,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:09:08,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:09:13,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:09:13,387 INFO L93 Difference]: Finished difference Result 2543 states and 3503 transitions. [2021-12-18 02:09:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 02:09:13,387 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 [2021-12-18 02:09:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:09:13,396 INFO L225 Difference]: With dead ends: 2543 [2021-12-18 02:09:13,396 INFO L226 Difference]: Without dead ends: 2533 [2021-12-18 02:09:13,397 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 [2021-12-18 02:09:13,397 INFO L933 BasicCegarLoop]: 2369 mSDtfsCounter, 1138 mSDsluCounter, 6497 mSDsCounter, 0 mSdLazyCounter, 5173 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 8866 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2021-12-18 02:09:13,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 8866 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 5173 Invalid, 4 Unknown, 0 Unchecked, 13.4s Time] [2021-12-18 02:09:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-12-18 02:09:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2399. [2021-12-18 02:09:13,478 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) [2021-12-18 02:09:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3294 transitions. [2021-12-18 02:09:13,485 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3294 transitions. Word has length 65 [2021-12-18 02:09:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:09:13,485 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3294 transitions. [2021-12-18 02:09:13,485 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) [2021-12-18 02:09:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3294 transitions. [2021-12-18 02:09:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 02:09:13,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:09:13,487 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] [2021-12-18 02:09:13,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 02:09:13,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:09:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:09:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1285989531, now seen corresponding path program 1 times [2021-12-18 02:09:13,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:09:13,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769163830] [2021-12-18 02:09:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:09:13,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:09:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 02:09:13,597 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 02:09:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 02:09:13,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-18 02:09:13,715 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 02:09:13,716 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 02:09:13,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 02:09:13,720 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:09:13,722 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 02:09:13,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 02:09:13 BoogieIcfgContainer [2021-12-18 02:09:13,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 02:09:13,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 02:09:13,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 02:09:13,810 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 02:09:13,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:08:37" (3/4) ... [2021-12-18 02:09:13,812 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-18 02:09:13,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 02:09:13,813 INFO L158 Benchmark]: Toolchain (without parser) took 46984.22ms. Allocated memory was 104.9MB in the beginning and 805.3MB in the end (delta: 700.4MB). Free memory was 62.7MB in the beginning and 380.8MB in the end (delta: -318.1MB). Peak memory consumption was 381.2MB. Max. memory is 16.1GB. [2021-12-18 02:09:13,813 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 62.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 02:09:13,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2172.97ms. Allocated memory was 104.9MB in the beginning and 224.4MB in the end (delta: 119.5MB). Free memory was 62.5MB in the beginning and 124.0MB in the end (delta: -61.6MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2021-12-18 02:09:13,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 247.42ms. Allocated memory is still 224.4MB. Free memory was 124.0MB in the beginning and 139.1MB in the end (delta: -15.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-12-18 02:09:13,814 INFO L158 Benchmark]: Boogie Preprocessor took 243.98ms. Allocated memory is still 224.4MB. Free memory was 139.1MB in the beginning and 104.2MB in the end (delta: 34.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-12-18 02:09:13,814 INFO L158 Benchmark]: RCFGBuilder took 7993.33ms. Allocated memory was 224.4MB in the beginning and 448.8MB in the end (delta: 224.4MB). Free memory was 104.2MB in the beginning and 288.5MB in the end (delta: -184.3MB). Peak memory consumption was 158.7MB. Max. memory is 16.1GB. [2021-12-18 02:09:13,814 INFO L158 Benchmark]: TraceAbstraction took 36318.84ms. Allocated memory was 448.8MB in the beginning and 805.3MB in the end (delta: 356.5MB). Free memory was 288.5MB in the beginning and 381.8MB in the end (delta: -93.3MB). Peak memory consumption was 263.3MB. Max. memory is 16.1GB. [2021-12-18 02:09:13,815 INFO L158 Benchmark]: Witness Printer took 2.74ms. Allocated memory is still 805.3MB. Free memory was 381.8MB in the beginning and 380.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 02:09:13,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 62.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2172.97ms. Allocated memory was 104.9MB in the beginning and 224.4MB in the end (delta: 119.5MB). Free memory was 62.5MB in the beginning and 124.0MB in the end (delta: -61.6MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 247.42ms. Allocated memory is still 224.4MB. Free memory was 124.0MB in the beginning and 139.1MB in the end (delta: -15.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 243.98ms. Allocated memory is still 224.4MB. Free memory was 139.1MB in the beginning and 104.2MB in the end (delta: 34.9MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * RCFGBuilder took 7993.33ms. Allocated memory was 224.4MB in the beginning and 448.8MB in the end (delta: 224.4MB). Free memory was 104.2MB in the beginning and 288.5MB in the end (delta: -184.3MB). Peak memory consumption was 158.7MB. Max. memory is 16.1GB. * TraceAbstraction took 36318.84ms. Allocated memory was 448.8MB in the beginning and 805.3MB in the end (delta: 356.5MB). Free memory was 288.5MB in the beginning and 381.8MB in the end (delta: -93.3MB). Peak memory consumption was 263.3MB. Max. memory is 16.1GB. * Witness Printer took 2.74ms. Allocated memory is still 805.3MB. Free memory was 381.8MB in the beginning and 380.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=0, \result={0:0}, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={44806:-17400}, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:-17400}, lock={44806:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, ldv_func_arg1={44806:-17400}, ldv_func_arg1={44806:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, ldv_func_arg1={44806:-17400}, ldv_func_arg1={44806:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={44805:-3}, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={44805:-3}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, experimental_zcopytx=0, get_current()={44805:-3}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={44805:-3}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={44807:44808}, dev={44806:-17416}, dev={44806:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={44805:-3}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={44807:44808}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={44806:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={44806:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={44806:8}, lock={44806:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={44807:44808}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 19393 SdHoareTripleChecker+Valid, 31.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18329 mSDsluCounter, 40620 SdHoareTripleChecker+Invalid, 29.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16549 mSDsCounter, 3943 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12406 IncrementalHoareTripleChecker+Invalid, 16356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3943 mSolverCounterUnsat, 24071 mSDtfsCounter, 12406 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: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 840 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s 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 [2021-12-18 02:09:13,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 02:09:15,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 02:09:15,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 02:09:15,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 02:09:15,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 02:09:15,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 02:09:15,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 02:09:15,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 02:09:15,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 02:09:15,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 02:09:15,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 02:09:15,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 02:09:15,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 02:09:15,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 02:09:15,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 02:09:15,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 02:09:15,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 02:09:15,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 02:09:15,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 02:09:15,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 02:09:15,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 02:09:15,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 02:09:15,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 02:09:15,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 02:09:15,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 02:09:15,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 02:09:15,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 02:09:15,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 02:09:15,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 02:09:15,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 02:09:15,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 02:09:15,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 02:09:15,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 02:09:15,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 02:09:15,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 02:09:15,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 02:09:15,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 02:09:15,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 02:09:15,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 02:09:15,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 02:09:15,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 02:09:15,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-18 02:09:15,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 02:09:15,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 02:09:15,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 02:09:15,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 02:09:15,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 02:09:15,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 02:09:15,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 02:09:15,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 02:09:15,684 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 02:09:15,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 02:09:15,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 02:09:15,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 02:09:15,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 02:09:15,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 02:09:15,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 02:09:15,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 02:09:15,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 02:09:15,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 02:09:15,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-12-18 02:09:15,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 02:09:15,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 02:09:15,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 02:09:15,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 02:09:15,939 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 02:09:15,940 INFO L432 ainManager$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 [2021-12-18 02:09:15,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa4c47dfa/7a8abb150af24a0aaba11869a10a1207/FLAGc191c3eac [2021-12-18 02:09:16,614 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 02:09:16,615 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 [2021-12-18 02:09:16,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa4c47dfa/7a8abb150af24a0aaba11869a10a1207/FLAGc191c3eac [2021-12-18 02:09:16,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa4c47dfa/7a8abb150af24a0aaba11869a10a1207 [2021-12-18 02:09:16,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 02:09:16,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 02:09:16,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 02:09:16,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 02:09:16,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 02:09:16,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:09:16" (1/1) ... [2021-12-18 02:09:16,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8e52f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:16, skipping insertion in model container [2021-12-18 02:09:16,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:09:16" (1/1) ... [2021-12-18 02:09:16,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 02:09:16,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 02:09:18,303 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] [2021-12-18 02:09:18,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:09:18,391 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 02:09:18,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 02:09:18,735 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] [2021-12-18 02:09:18,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:09:18,751 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 02:09:19,078 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] [2021-12-18 02:09:19,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:09:19,145 INFO L208 MainTranslator]: Completed translation [2021-12-18 02:09:19,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19 WrapperNode [2021-12-18 02:09:19,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 02:09:19,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 02:09:19,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 02:09:19,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 02:09:19,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,388 INFO L137 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6447 [2021-12-18 02:09:19,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 02:09:19,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 02:09:19,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 02:09:19,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 02:09:19,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 02:09:19,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 02:09:19,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 02:09:19,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 02:09:19,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (1/1) ... [2021-12-18 02:09:19,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 02:09:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 02:09:19,697 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) [2021-12-18 02:09:19,725 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 [2021-12-18 02:09:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-12-18 02:09:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-12-18 02:09:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-12-18 02:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-12-18 02:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-12-18 02:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-12-18 02:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-18 02:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-12-18 02:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-12-18 02:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-18 02:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-18 02:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-18 02:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-18 02:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-12-18 02:09:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-12-18 02:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 02:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-18 02:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-12-18 02:09:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-12-18 02:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 02:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-18 02:09:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-18 02:09:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-12-18 02:09:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-12-18 02:09:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-12-18 02:09:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-12-18 02:09:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-12-18 02:09:19,741 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-12-18 02:09:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-18 02:09:19,741 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-18 02:09:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-18 02:09:19,741 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-18 02:09:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 02:09:19,741 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 02:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-12-18 02:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-12-18 02:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 02:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 02:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-12-18 02:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-12-18 02:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 02:09:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 02:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 02:09:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 02:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-12-18 02:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-18 02:09:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-18 02:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-12-18 02:09:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-12-18 02:09:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-12-18 02:09:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-12-18 02:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-12-18 02:09:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-12-18 02:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-12-18 02:09:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-12-18 02:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-12-18 02:09:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-12-18 02:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 02:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 02:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 02:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 02:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-18 02:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-18 02:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-12-18 02:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-12-18 02:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-12-18 02:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-12-18 02:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 02:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 02:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 02:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-12-18 02:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-12-18 02:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-12-18 02:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-12-18 02:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 02:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 02:09:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 02:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-12-18 02:09:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-12-18 02:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-12-18 02:09:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-12-18 02:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-18 02:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-18 02:09:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-18 02:09:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 02:09:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-18 02:09:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 02:09:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-12-18 02:09:19,749 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-12-18 02:09:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-12-18 02:09:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-12-18 02:09:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 02:09:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 02:09:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-18 02:09:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-12-18 02:09:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-12-18 02:09:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 02:09:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-18 02:09:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-12-18 02:09:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-12-18 02:09:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-18 02:09:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-18 02:09:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 02:09:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 02:09:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-12-18 02:09:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-12-18 02:09:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 02:09:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 02:09:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-12-18 02:09:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-12-18 02:09:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-12-18 02:09:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-12-18 02:09:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-12-18 02:09:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-12-18 02:09:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-18 02:09:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-18 02:09:19,756 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-18 02:09:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-18 02:09:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 02:09:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 02:09:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-12-18 02:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-12-18 02:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-18 02:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-18 02:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-12-18 02:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-12-18 02:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-12-18 02:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-12-18 02:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-12-18 02:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-12-18 02:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-12-18 02:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-12-18 02:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-18 02:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-18 02:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 02:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 02:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-12-18 02:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-12-18 02:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-12-18 02:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-18 02:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-18 02:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-12-18 02:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-12-18 02:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-12-18 02:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-12-18 02:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-12-18 02:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-12-18 02:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-12-18 02:09:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-12-18 02:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-12-18 02:09:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-12-18 02:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-12-18 02:09:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-12-18 02:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-18 02:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-18 02:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-18 02:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-18 02:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-12-18 02:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-12-18 02:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-18 02:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-18 02:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-18 02:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-18 02:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 02:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 02:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-12-18 02:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-12-18 02:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-12-18 02:09:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-12-18 02:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 02:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-12-18 02:09:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-12-18 02:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-18 02:09:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-18 02:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-12-18 02:09:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-12-18 02:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 02:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-12-18 02:09:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-12-18 02:09:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-12-18 02:09:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-18 02:09:19,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-18 02:09:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-18 02:09:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-18 02:09:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-18 02:09:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 02:09:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 02:09:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-18 02:09:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-12-18 02:09:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-12-18 02:09:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-18 02:09:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-18 02:09:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-12-18 02:09:19,769 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-12-18 02:09:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-12-18 02:09:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-12-18 02:09:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 02:09:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 02:09:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-18 02:09:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-18 02:09:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-12-18 02:09:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-12-18 02:09:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-18 02:09:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-18 02:09:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 02:09:19,770 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 02:09:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-12-18 02:09:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-12-18 02:09:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-12-18 02:09:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-12-18 02:09:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-18 02:09:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-18 02:09:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-12-18 02:09:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-12-18 02:09:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-12-18 02:09:19,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-12-18 02:09:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-12-18 02:09:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-12-18 02:09:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 02:09:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 02:09:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 02:09:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 02:09:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-12-18 02:09:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-12-18 02:09:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-18 02:09:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-12-18 02:09:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-12-18 02:09:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-12-18 02:09:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-12-18 02:09:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-18 02:09:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-18 02:09:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 02:09:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 02:09:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 02:09:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 02:09:20,458 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 02:09:20,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 02:09:43,553 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: __copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: __copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0bv64 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0bv64 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0bv64 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0bv64 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-12-18 02:09:43,554 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-12-18 02:09:43,554 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 || 16bv32 == __copy_to_user_~size#1; [2021-12-18 02:09:43,554 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; [2021-12-18 02:09:43,555 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 || 10bv32 == __copy_to_user_~size#1; [2021-12-18 02:09:43,555 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 [2021-12-18 02:09:43,555 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; [2021-12-18 02:09:43,555 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 || 8bv32 == __copy_to_user_~size#1; [2021-12-18 02:09:43,555 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 := __copy_to_user_~tmp___2~4#1[32:0]; [2021-12-18 02:09:43,555 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; [2021-12-18 02:09:43,555 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 || 4bv32 == __copy_to_user_~size#1; [2021-12-18 02:09:43,555 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; [2021-12-18 02:09:43,555 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 || 2bv32 == __copy_to_user_~size#1; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: __copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0bv64 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0bv64 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-12-18 02:09:59,662 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-12-18 02:09:59,663 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-18 02:09:59,663 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-12-18 02:09:59,663 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; [2021-12-18 02:09:59,663 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 || 4bv32 == __copy_from_user_~size#1; [2021-12-18 02:09:59,663 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; [2021-12-18 02:09:59,663 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 || 8bv32 == __copy_from_user_~size#1; [2021-12-18 02:09:59,663 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 || 2bv32 == __copy_from_user_~size#1; [2021-12-18 02:09:59,663 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; [2021-12-18 02:09:59,663 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-12-18 02:09:59,663 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-12-18 02:09:59,663 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 := __copy_from_user_~tmp___2~3#1[32:0]; [2021-12-18 02:09:59,663 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 [2021-12-18 02:09:59,663 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; [2021-12-18 02:09:59,663 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 || 10bv32 == __copy_from_user_~size#1; [2021-12-18 02:09:59,663 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-12-18 02:09:59,663 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 || 16bv32 == __copy_from_user_~size#1; [2021-12-18 02:10:08,021 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 02:10:08,044 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 02:10:08,044 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 02:10:08,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:10:08 BoogieIcfgContainer [2021-12-18 02:10:08,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 02:10:08,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 02:10:08,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 02:10:08,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 02:10:08,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 02:09:16" (1/3) ... [2021-12-18 02:10:08,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b653521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:10:08, skipping insertion in model container [2021-12-18 02:10:08,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:09:19" (2/3) ... [2021-12-18 02:10:08,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b653521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:10:08, skipping insertion in model container [2021-12-18 02:10:08,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:10:08" (3/3) ... [2021-12-18 02:10:08,054 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-12-18 02:10:08,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 02:10:08,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 02:10:08,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 02:10:08,108 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 [2021-12-18 02:10:08,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 02:10:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) [2021-12-18 02:10:08,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 02:10:08,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:08,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:08,165 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:08,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash -801145376, now seen corresponding path program 1 times [2021-12-18 02:10:08,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:08,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065760311] [2021-12-18 02:10:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:08,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:08,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:08,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:08,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 02:10:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:08,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 02:10:08,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:10:08,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:08,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:08,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065760311] [2021-12-18 02:10:08,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065760311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:08,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:08,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:08,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039683318] [2021-12-18 02:10:08,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:08,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:08,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:08,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:08,964 INFO L87 Difference]: Start difference. First operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) 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) [2021-12-18 02:10:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:09,278 INFO L93 Difference]: Finished difference Result 4422 states and 6498 transitions. [2021-12-18 02:10:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:09,280 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 [2021-12-18 02:10:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:09,304 INFO L225 Difference]: With dead ends: 4422 [2021-12-18 02:10:09,305 INFO L226 Difference]: Without dead ends: 2207 [2021-12-18 02:10:09,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:09,322 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:09,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 3205 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:10:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-12-18 02:10:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-12-18 02:10:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1532 states have (on average 1.3426892950391645) internal successors, (2057), 1575 states have internal predecessors, (2057), 571 states have call successors, (571), 104 states have call predecessors, (571), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-12-18 02:10:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3194 transitions. [2021-12-18 02:10:09,466 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3194 transitions. Word has length 16 [2021-12-18 02:10:09,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:09,467 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3194 transitions. [2021-12-18 02:10:09,467 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) [2021-12-18 02:10:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3194 transitions. [2021-12-18 02:10:09,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 02:10:09,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:09,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:09,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:09,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:09,679 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:09,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:09,681 INFO L85 PathProgramCache]: Analyzing trace with hash 933280137, now seen corresponding path program 1 times [2021-12-18 02:10:09,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:09,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242060079] [2021-12-18 02:10:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:09,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:09,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:09,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:09,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 02:10:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:10,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 02:10:10,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:10:10,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:10,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242060079] [2021-12-18 02:10:10,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242060079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:10,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:10,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:10,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487011928] [2021-12-18 02:10:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:10,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:10,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:10,408 INFO L87 Difference]: Start difference. First operand 2207 states and 3194 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) [2021-12-18 02:10:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:10,530 INFO L93 Difference]: Finished difference Result 2209 states and 3195 transitions. [2021-12-18 02:10:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:10,531 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 [2021-12-18 02:10:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:10,540 INFO L225 Difference]: With dead ends: 2209 [2021-12-18 02:10:10,541 INFO L226 Difference]: Without dead ends: 2206 [2021-12-18 02:10:10,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:10,543 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 3178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:10,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 3191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:10:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-12-18 02:10:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2021-12-18 02:10:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1532 states have (on average 1.3420365535248042) internal successors, (2056), 1574 states have internal predecessors, (2056), 570 states have call successors, (570), 104 states have call predecessors, (570), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-12-18 02:10:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3192 transitions. [2021-12-18 02:10:10,615 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3192 transitions. Word has length 17 [2021-12-18 02:10:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:10,615 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 3192 transitions. [2021-12-18 02:10:10,615 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) [2021-12-18 02:10:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3192 transitions. [2021-12-18 02:10:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 02:10:10,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:10,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:10,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:10,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:10,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1134098941, now seen corresponding path program 1 times [2021-12-18 02:10:10,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:10,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070658740] [2021-12-18 02:10:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:10,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:10,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:10,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:10,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 02:10:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:11,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 02:10:11,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:10:11,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:11,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:11,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070658740] [2021-12-18 02:10:11,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070658740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:11,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:11,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:11,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706710117] [2021-12-18 02:10:11,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:11,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:11,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:11,638 INFO L87 Difference]: Start difference. First operand 2206 states and 3192 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) [2021-12-18 02:10:11,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:11,775 INFO L93 Difference]: Finished difference Result 2208 states and 3193 transitions. [2021-12-18 02:10:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:11,776 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 [2021-12-18 02:10:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:11,787 INFO L225 Difference]: With dead ends: 2208 [2021-12-18 02:10:11,787 INFO L226 Difference]: Without dead ends: 2205 [2021-12-18 02:10:11,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:11,790 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 3175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:11,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3175 Valid, 3189 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:10:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-12-18 02:10:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2205. [2021-12-18 02:10:11,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1532 states have (on average 1.3413838120104438) internal successors, (2055), 1573 states have internal predecessors, (2055), 569 states have call successors, (569), 104 states have call predecessors, (569), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-12-18 02:10:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3190 transitions. [2021-12-18 02:10:11,884 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3190 transitions. Word has length 18 [2021-12-18 02:10:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:11,884 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3190 transitions. [2021-12-18 02:10:11,884 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) [2021-12-18 02:10:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3190 transitions. [2021-12-18 02:10:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 02:10:11,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:11,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:11,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:12,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:12,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -798336052, now seen corresponding path program 1 times [2021-12-18 02:10:12,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:12,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370963658] [2021-12-18 02:10:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:12,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:12,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:12,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:12,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 02:10:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:12,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 02:10:12,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:10:12,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:12,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:12,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370963658] [2021-12-18 02:10:12,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370963658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:12,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:12,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:12,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336980578] [2021-12-18 02:10:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:12,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:12,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:12,883 INFO L87 Difference]: Start difference. First operand 2205 states and 3190 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) [2021-12-18 02:10:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:13,178 INFO L93 Difference]: Finished difference Result 4994 states and 7160 transitions. [2021-12-18 02:10:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:13,179 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 [2021-12-18 02:10:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:13,191 INFO L225 Difference]: With dead ends: 4994 [2021-12-18 02:10:13,192 INFO L226 Difference]: Without dead ends: 2791 [2021-12-18 02:10:13,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:13,201 INFO L933 BasicCegarLoop]: 3540 mSDtfsCounter, 1201 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 6266 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:13,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 6266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 02:10:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-12-18 02:10:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2788. [2021-12-18 02:10:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 1930 states have (on average 1.3233160621761657) internal successors, (2554), 1990 states have internal predecessors, (2554), 688 states have call successors, (688), 172 states have call predecessors, (688), 169 states have return successors, (693), 667 states have call predecessors, (693), 679 states have call successors, (693) [2021-12-18 02:10:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3935 transitions. [2021-12-18 02:10:13,331 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3935 transitions. Word has length 19 [2021-12-18 02:10:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:13,332 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3935 transitions. [2021-12-18 02:10:13,332 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) [2021-12-18 02:10:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3935 transitions. [2021-12-18 02:10:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-18 02:10:13,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:13,334 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] [2021-12-18 02:10:13,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:13,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:13,544 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash -587069341, now seen corresponding path program 1 times [2021-12-18 02:10:13,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:13,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300856283] [2021-12-18 02:10:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:13,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:13,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:13,562 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:13,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 02:10:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:14,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 02:10:14,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:10:14,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:14,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300856283] [2021-12-18 02:10:14,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300856283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:14,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:14,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:14,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002517198] [2021-12-18 02:10:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:14,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:14,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:14,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:14,574 INFO L87 Difference]: Start difference. First operand 2788 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:10:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:14,737 INFO L93 Difference]: Finished difference Result 5585 states and 7888 transitions. [2021-12-18 02:10:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2021-12-18 02:10:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:14,752 INFO L225 Difference]: With dead ends: 5585 [2021-12-18 02:10:14,752 INFO L226 Difference]: Without dead ends: 2808 [2021-12-18 02:10:14,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:14,765 INFO L933 BasicCegarLoop]: 3172 mSDtfsCounter, 43 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:14,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 6290 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:10:14,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2021-12-18 02:10:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2808. [2021-12-18 02:10:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 1946 states have (on average 1.3232271325796505) internal successors, (2575), 2006 states have internal predecessors, (2575), 692 states have call successors, (692), 172 states have call predecessors, (692), 169 states have return successors, (697), 671 states have call predecessors, (697), 683 states have call successors, (697) [2021-12-18 02:10:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3964 transitions. [2021-12-18 02:10:14,881 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3964 transitions. Word has length 55 [2021-12-18 02:10:14,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:14,881 INFO L470 AbstractCegarLoop]: Abstraction has 2808 states and 3964 transitions. [2021-12-18 02:10:14,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:10:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3964 transitions. [2021-12-18 02:10:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-18 02:10:14,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:14,887 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:14,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:15,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:15,095 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1997599171, now seen corresponding path program 1 times [2021-12-18 02:10:15,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:15,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575360759] [2021-12-18 02:10:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:15,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:15,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:15,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:15,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 02:10:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:15,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-18 02:10:15,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:10:15,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:15,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:15,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575360759] [2021-12-18 02:10:15,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575360759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:15,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:15,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:15,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187322374] [2021-12-18 02:10:15,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:15,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:15,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:15,830 INFO L87 Difference]: Start difference. First operand 2808 states and 3964 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:10:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:16,023 INFO L93 Difference]: Finished difference Result 5607 states and 7983 transitions. [2021-12-18 02:10:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:16,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-12-18 02:10:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:16,035 INFO L225 Difference]: With dead ends: 5607 [2021-12-18 02:10:16,035 INFO L226 Difference]: Without dead ends: 2810 [2021-12-18 02:10:16,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:16,048 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 0 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:16,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:10:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-12-18 02:10:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2808. [2021-12-18 02:10:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2808 states, 1946 states have (on average 1.3201438848920863) internal successors, (2569), 2006 states have internal predecessors, (2569), 692 states have call successors, (692), 172 states have call predecessors, (692), 169 states have return successors, (697), 671 states have call predecessors, (697), 683 states have call successors, (697) [2021-12-18 02:10:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3958 transitions. [2021-12-18 02:10:16,154 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3958 transitions. Word has length 59 [2021-12-18 02:10:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:16,155 INFO L470 AbstractCegarLoop]: Abstraction has 2808 states and 3958 transitions. [2021-12-18 02:10:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:10:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3958 transitions. [2021-12-18 02:10:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 02:10:16,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:16,158 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:16,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:16,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:16,372 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1160460849, now seen corresponding path program 1 times [2021-12-18 02:10:16,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:16,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371916321] [2021-12-18 02:10:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:16,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:16,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:16,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:16,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-18 02:10:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:16,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 02:10:16,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:10:17,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:17,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:17,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371916321] [2021-12-18 02:10:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371916321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:17,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:17,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 02:10:17,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431234927] [2021-12-18 02:10:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:17,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 02:10:17,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:17,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 02:10:17,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:17,384 INFO L87 Difference]: Start difference. First operand 2808 states and 3958 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:10:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:17,542 INFO L93 Difference]: Finished difference Result 4622 states and 6465 transitions. [2021-12-18 02:10:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 02:10:17,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2021-12-18 02:10:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:17,553 INFO L225 Difference]: With dead ends: 4622 [2021-12-18 02:10:17,553 INFO L226 Difference]: Without dead ends: 2330 [2021-12-18 02:10:17,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 02:10:17,563 INFO L933 BasicCegarLoop]: 3066 mSDtfsCounter, 2146 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:17,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 4068 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:10:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-12-18 02:10:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2330. [2021-12-18 02:10:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 1621 states have (on average 1.3084515731030228) internal successors, (2121), 1666 states have internal predecessors, (2121), 551 states have call successors, (551), 161 states have call predecessors, (551), 157 states have return successors, (538), 531 states have call predecessors, (538), 538 states have call successors, (538) [2021-12-18 02:10:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3210 transitions. [2021-12-18 02:10:17,633 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3210 transitions. Word has length 65 [2021-12-18 02:10:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:17,633 INFO L470 AbstractCegarLoop]: Abstraction has 2330 states and 3210 transitions. [2021-12-18 02:10:17,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:10:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3210 transitions. [2021-12-18 02:10:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 02:10:17,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:17,635 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] [2021-12-18 02:10:17,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-18 02:10:17,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:17,847 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:17,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:17,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1430062309, now seen corresponding path program 1 times [2021-12-18 02:10:17,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:17,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563090837] [2021-12-18 02:10:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:17,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:17,850 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:17,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-18 02:10:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:10:18,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 02:10:18,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:10:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:10:18,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:10:18,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 02:10:18,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563090837] [2021-12-18 02:10:18,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563090837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:10:18,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:10:18,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 02:10:18,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638931319] [2021-12-18 02:10:18,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:10:18,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 02:10:18,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 02:10:18,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 02:10:18,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 02:10:18,774 INFO L87 Difference]: Start difference. First operand 2330 states and 3210 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:10:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:10:19,078 INFO L93 Difference]: Finished difference Result 2360 states and 3251 transitions. [2021-12-18 02:10:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 02:10:19,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 2 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 68 [2021-12-18 02:10:19,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:10:19,089 INFO L225 Difference]: With dead ends: 2360 [2021-12-18 02:10:19,089 INFO L226 Difference]: Without dead ends: 2350 [2021-12-18 02:10:19,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 02:10:19,091 INFO L933 BasicCegarLoop]: 2565 mSDtfsCounter, 13 mSDsluCounter, 10249 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12814 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 02:10:19,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 12814 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 02:10:19,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-12-18 02:10:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2335. [2021-12-18 02:10:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1625 states have (on average 1.3076923076923077) internal successors, (2125), 1670 states have internal predecessors, (2125), 551 states have call successors, (551), 161 states have call predecessors, (551), 158 states have return successors, (541), 532 states have call predecessors, (541), 538 states have call successors, (541) [2021-12-18 02:10:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3217 transitions. [2021-12-18 02:10:19,172 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3217 transitions. Word has length 68 [2021-12-18 02:10:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:10:19,173 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 3217 transitions. [2021-12-18 02:10:19,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:10:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3217 transitions. [2021-12-18 02:10:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-18 02:10:19,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:10:19,174 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] [2021-12-18 02:10:19,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:19,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:19,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:10:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:10:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2110680448, now seen corresponding path program 1 times [2021-12-18 02:10:19,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 02:10:19,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810080589] [2021-12-18 02:10:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:10:19,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 02:10:19,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 02:10:19,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 02:10:19,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-18 02:10:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 02:10:23,632 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 02:10:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 02:10:26,726 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-18 02:10:26,727 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 02:10:26,727 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 02:10:26,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-18 02:10:26,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 02:10:26,941 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:10:26,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 02:10:27,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 02:10:27 BoogieIcfgContainer [2021-12-18 02:10:27,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 02:10:27,002 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 02:10:27,002 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 02:10:27,002 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 02:10:27,003 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:10:08" (3/4) ... [2021-12-18 02:10:27,005 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-18 02:10:27,019 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 02:10:27,019 INFO L158 Benchmark]: Toolchain (without parser) took 70242.58ms. Allocated memory was 62.9MB in the beginning and 656.4MB in the end (delta: 593.5MB). Free memory was 41.3MB in the beginning and 362.4MB in the end (delta: -321.1MB). Peak memory consumption was 272.1MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,020 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 44.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 02:10:27,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2367.48ms. Allocated memory was 62.9MB in the beginning and 199.2MB in the end (delta: 136.3MB). Free memory was 41.1MB in the beginning and 89.9MB in the end (delta: -48.8MB). Peak memory consumption was 100.1MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 244.31ms. Allocated memory is still 199.2MB. Free memory was 89.9MB in the beginning and 100.6MB in the end (delta: -10.6MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,020 INFO L158 Benchmark]: Boogie Preprocessor took 268.84ms. Allocated memory is still 199.2MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,021 INFO L158 Benchmark]: RCFGBuilder took 48386.28ms. Allocated memory was 199.2MB in the beginning and 408.9MB in the end (delta: 209.7MB). Free memory was 98.7MB in the beginning and 190.4MB in the end (delta: -91.7MB). Peak memory consumption was 229.7MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,021 INFO L158 Benchmark]: TraceAbstraction took 18952.55ms. Allocated memory was 408.9MB in the beginning and 656.4MB in the end (delta: 247.5MB). Free memory was 190.4MB in the beginning and 363.5MB in the end (delta: -173.1MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,021 INFO L158 Benchmark]: Witness Printer took 16.79ms. Allocated memory is still 656.4MB. Free memory was 363.5MB in the beginning and 362.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 02:10:27,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 44.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2367.48ms. Allocated memory was 62.9MB in the beginning and 199.2MB in the end (delta: 136.3MB). Free memory was 41.1MB in the beginning and 89.9MB in the end (delta: -48.8MB). Peak memory consumption was 100.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 244.31ms. Allocated memory is still 199.2MB. Free memory was 89.9MB in the beginning and 100.6MB in the end (delta: -10.6MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 268.84ms. Allocated memory is still 199.2MB. Free memory was 100.6MB in the beginning and 99.1MB in the end (delta: 1.5MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * RCFGBuilder took 48386.28ms. Allocated memory was 199.2MB in the beginning and 408.9MB in the end (delta: 209.7MB). Free memory was 98.7MB in the beginning and 190.4MB in the end (delta: -91.7MB). Peak memory consumption was 229.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18952.55ms. Allocated memory was 408.9MB in the beginning and 656.4MB in the end (delta: 247.5MB). Free memory was 190.4MB in the beginning and 363.5MB in the end (delta: -173.1MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. * Witness Printer took 16.79ms. Allocated memory is still 656.4MB. Free memory was 363.5MB in the beginning and 362.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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={0:0}, 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={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=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={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=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={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=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={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=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={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=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={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=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={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=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: VAL [__this_module={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=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10670] FCALL ldv_handler_precall() VAL [__this_module={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=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=2147483648, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10671] CALL vhost_net_ioctl(var_group2, var_vhost_net_ioctl_27_p1, var_vhost_net_ioctl_27_p2) VAL [\old(ldv_mutex_mutex)=1, __this_module={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=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={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=1, lock={1152921504624148480:103079198736}, 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={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=1, lock={1152921504624148480:103079198736}, lock={1152921504624148480:103079198736}, 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={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, lock={1152921504624148480:103079198736}, lock={1152921504624148480:103079198736}, 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={0:0}, experimental_zcopytx=0, ldv_func_arg1={1152921504624148480:103079198736}, ldv_func_arg1={1152921504624148480:103079198736}, 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={0:0}, experimental_zcopytx=0, ldv_func_arg1={1152921504624148480:103079198736}, ldv_func_arg1={1152921504624148480:103079198736}, 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={0:0}, dev={1152921504624148480:103079198720}, 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={0:0}, dev={1152921504624148480:103079198720}, dev={1152921504624148480:103079198720}, 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={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, 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={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, 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={4:0}, __this_module={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, pfo_ret__={4:0}, 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={0:0}, dev={1152921504624148480:103079198720}, dev={1152921504624148480:103079198720}, experimental_zcopytx=0, get_current()={4:0}, 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] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={1152921504624148480:103079198720}, dev={1152921504624148480:103079198720}, dev->mm={144115188075855872:0}, 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={4:0}, tmp->mm={0:144115188075855872}, 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={0:0}, dev={1152921504624148480:103079198720}, dev={1152921504624148480:103079198720}, dev->mm={144115188075855872:0}, 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={4:0}, tmp->mm={0:144115188075855872}, 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={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, n={1152921504624148480:103079198720}, n={1152921504624148480:103079198720}, rx_sock={222:0}, tx_sock={235:0}, 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={0:0}, 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={1152921504624148480:103079198720}, n={1152921504624148480:103079198720}, rx_sock={222:0}, tx_sock={235:0}, 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={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, n={1152921504624148480:103079198720}, rx_sock={222:0}, tx_sock={235:0}, 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={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, n={1152921504624148480:103079198720}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={1152921504624148480:103079216136}] [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={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, lock={1152921504624148480:103079216144}, 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={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, lock={1152921504624148480:103079216144}, lock={1152921504624148480:103079216144}, 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={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, 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={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, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 105 procedures, 2218 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12968 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12949 mSDsluCounter, 45350 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20255 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 25095 mSDtfsCounter, 61 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2808occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 524 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5127 ConjunctsInSsa, 21 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 [2021-12-18 02:10:27,095 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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample