./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 791161d1 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-?-791161d [2022-07-22 22:59:14,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:59:14,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:59:14,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:59:14,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:59:14,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:59:14,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:59:14,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:59:14,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:59:14,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:59:14,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:59:14,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:59:14,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:59:14,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:59:14,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:59:14,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:59:14,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:59:14,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:59:14,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:59:14,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:59:14,862 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:59:14,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:59:14,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:59:14,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:59:14,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:59:14,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:59:14,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:59:14,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:59:14,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:59:14,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:59:14,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:59:14,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:59:14,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:59:14,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:59:14,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:59:14,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:59:14,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:59:14,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:59:14,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:59:14,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:59:14,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:59:14,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:59:14,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:59:14,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:59:14,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:59:14,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:59:14,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:59:14,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:59:14,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:59:14,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:59:14,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:59:14,898 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:59:14,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:59:14,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:59:14,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:59:14,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:59:14,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:59:14,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:59:14,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:59:14,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:59:14,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:59:14,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:59:14,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:59:14,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:59:14,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:59:14,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:59:14,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:59:14,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:59:14,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:59:14,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:59:14,901 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:59:14,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:59:14,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:59:14,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-07-22 22:59:15,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:59:15,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:59:15,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:59:15,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:59:15,133 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:59:15,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-07-22 22:59:15,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583b9db2b/240c2851ba7a42919c2d8c8984ebfaa2/FLAGd43da7f81 [2022-07-22 22:59:15,985 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:59:15,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-07-22 22:59:16,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583b9db2b/240c2851ba7a42919c2d8c8984ebfaa2/FLAGd43da7f81 [2022-07-22 22:59:16,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/583b9db2b/240c2851ba7a42919c2d8c8984ebfaa2 [2022-07-22 22:59:16,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:59:16,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:59:16,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:59:16,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:59:16,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:59:16,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:59:16" (1/1) ... [2022-07-22 22:59:16,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68afbd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:16, skipping insertion in model container [2022-07-22 22:59:16,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:59:16" (1/1) ... [2022-07-22 22:59:16,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:59:16,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:59:18,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-07-22 22:59:18,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:59:18,456 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:59:18,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2022-07-22 22:59:18,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:59:18,881 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:59:18,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18 WrapperNode [2022-07-22 22:59:18,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:59:18,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:59:18,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:59:18,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:59:18,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:18,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,161 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6671 [2022-07-22 22:59:19,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:59:19,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:59:19,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:59:19,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:59:19,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:59:19,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:59:19,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:59:19,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:59:19,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (1/1) ... [2022-07-22 22:59:19,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:59:19,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:59:19,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:59:19,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:59:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2022-07-22 22:59:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2022-07-22 22:59:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2022-07-22 22:59:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2022-07-22 22:59:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2022-07-22 22:59:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2022-07-22 22:59:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2022-07-22 22:59:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2022-07-22 22:59:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-07-22 22:59:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-07-22 22:59:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2022-07-22 22:59:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2022-07-22 22:59:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 22:59:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2022-07-22 22:59:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2022-07-22 22:59:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 22:59:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-07-22 22:59:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-07-22 22:59:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2022-07-22 22:59:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2022-07-22 22:59:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2022-07-22 22:59:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2022-07-22 22:59:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2022-07-22 22:59:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2022-07-22 22:59:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-22 22:59:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-22 22:59:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-22 22:59:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-22 22:59:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 22:59:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 22:59:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2022-07-22 22:59:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2022-07-22 22:59:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 22:59:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 22:59:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2022-07-22 22:59:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2022-07-22 22:59:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 22:59:19,533 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 22:59:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 22:59:19,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 22:59:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-07-22 22:59:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-22 22:59:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-22 22:59:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2022-07-22 22:59:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2022-07-22 22:59:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2022-07-22 22:59:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2022-07-22 22:59:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2022-07-22 22:59:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2022-07-22 22:59:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2022-07-22 22:59:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2022-07-22 22:59:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2022-07-22 22:59:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2022-07-22 22:59:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2022-07-22 22:59:19,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2022-07-22 22:59:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 22:59:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 22:59:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 22:59:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 22:59:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-22 22:59:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-22 22:59:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2022-07-22 22:59:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2022-07-22 22:59:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2022-07-22 22:59:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2022-07-22 22:59:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:59:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 22:59:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 22:59:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2022-07-22 22:59:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2022-07-22 22:59:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2022-07-22 22:59:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2022-07-22 22:59:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:59:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 22:59:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 22:59:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2022-07-22 22:59:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2022-07-22 22:59:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2022-07-22 22:59:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2022-07-22 22:59:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:59:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:59:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2022-07-22 22:59:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2022-07-22 22:59:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2022-07-22 22:59:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2022-07-22 22:59:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 22:59:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 22:59:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2022-07-22 22:59:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2022-07-22 22:59:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2022-07-22 22:59:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2022-07-22 22:59:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 22:59:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 22:59:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-22 22:59:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-22 22:59:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 22:59:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 22:59:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-07-22 22:59:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-07-22 22:59:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 22:59:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 22:59:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2022-07-22 22:59:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2022-07-22 22:59:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2022-07-22 22:59:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2022-07-22 22:59:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2022-07-22 22:59:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2022-07-22 22:59:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-22 22:59:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-22 22:59:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-22 22:59:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-22 22:59:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 22:59:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 22:59:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 22:59:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2022-07-22 22:59:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2022-07-22 22:59:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-07-22 22:59:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-07-22 22:59:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 22:59:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-07-22 22:59:19,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-07-22 22:59:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:59:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2022-07-22 22:59:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2022-07-22 22:59:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2022-07-22 22:59:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2022-07-22 22:59:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2022-07-22 22:59:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2022-07-22 22:59:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-22 22:59:19,558 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-22 22:59:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 22:59:19,558 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 22:59:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-07-22 22:59:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2022-07-22 22:59:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2022-07-22 22:59:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:59:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-22 22:59:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-22 22:59:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2022-07-22 22:59:19,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2022-07-22 22:59:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-07-22 22:59:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-07-22 22:59:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2022-07-22 22:59:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2022-07-22 22:59:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2022-07-22 22:59:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2022-07-22 22:59:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2022-07-22 22:59:19,560 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2022-07-22 22:59:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2022-07-22 22:59:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2022-07-22 22:59:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2022-07-22 22:59:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2022-07-22 22:59:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-07-22 22:59:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-07-22 22:59:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-22 22:59:19,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-22 22:59:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 22:59:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 22:59:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2022-07-22 22:59:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2022-07-22 22:59:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-07-22 22:59:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-07-22 22:59:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:59:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2022-07-22 22:59:19,562 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2022-07-22 22:59:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-22 22:59:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-22 22:59:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2022-07-22 22:59:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2022-07-22 22:59:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:59:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2022-07-22 22:59:19,563 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2022-07-22 22:59:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2022-07-22 22:59:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2022-07-22 22:59:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2022-07-22 22:59:19,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2022-07-22 22:59:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:59:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-07-22 22:59:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-07-22 22:59:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 22:59:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-07-22 22:59:19,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-07-22 22:59:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 22:59:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 22:59:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2022-07-22 22:59:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2022-07-22 22:59:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-22 22:59:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-22 22:59:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-07-22 22:59:19,566 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-07-22 22:59:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2022-07-22 22:59:19,567 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2022-07-22 22:59:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-22 22:59:19,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-22 22:59:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2022-07-22 22:59:19,568 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2022-07-22 22:59:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-22 22:59:19,568 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-22 22:59:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2022-07-22 22:59:19,569 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2022-07-22 22:59:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-07-22 22:59:19,569 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-07-22 22:59:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 22:59:19,569 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 22:59:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2022-07-22 22:59:19,569 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2022-07-22 22:59:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2022-07-22 22:59:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2022-07-22 22:59:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-22 22:59:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-22 22:59:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2022-07-22 22:59:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2022-07-22 22:59:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2022-07-22 22:59:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2022-07-22 22:59:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:59:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:59:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2022-07-22 22:59:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2022-07-22 22:59:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-22 22:59:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-22 22:59:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 22:59:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 22:59:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2022-07-22 22:59:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2022-07-22 22:59:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:59:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2022-07-22 22:59:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2022-07-22 22:59:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2022-07-22 22:59:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2022-07-22 22:59:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-22 22:59:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-22 22:59:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:59:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:59:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 22:59:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 22:59:20,358 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:59:20,360 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:59:24,716 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2022-07-22 22:59:24,717 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-07-22 22:59:24,718 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,719 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2022-07-22 22:59:24,719 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2022-07-22 22:59:24,719 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2022-07-22 22:59:26,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-07-22 22:59:26,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2022-07-22 22:59:26,375 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,376 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2022-07-22 22:59:26,377 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2022-07-22 22:59:27,187 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:59:27,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:59:27,211 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 22:59:27,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:59:27 BoogieIcfgContainer [2022-07-22 22:59:27,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:59:27,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:59:27,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:59:27,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:59:27,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:59:16" (1/3) ... [2022-07-22 22:59:27,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab38a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:59:27, skipping insertion in model container [2022-07-22 22:59:27,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:59:18" (2/3) ... [2022-07-22 22:59:27,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab38a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:59:27, skipping insertion in model container [2022-07-22 22:59:27,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:59:27" (3/3) ... [2022-07-22 22:59:27,225 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-07-22 22:59:27,237 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:59:27,237 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:59:27,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:59:27,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65390420, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dfd45dc [2022-07-22 22:59:27,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:59:27,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 2248 states, 1559 states have (on average 1.347658755612572) internal successors, (2101), 1605 states have internal predecessors, (2101), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2022-07-22 22:59:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-22 22:59:27,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:27,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:27,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1613910609, now seen corresponding path program 1 times [2022-07-22 22:59:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:27,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986814977] [2022-07-22 22:59:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:27,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:59:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:27,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986814977] [2022-07-22 22:59:27,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986814977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:27,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:27,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:59:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995425168] [2022-07-22 22:59:27,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:27,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:59:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:59:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:27,865 INFO L87 Difference]: Start difference. First operand has 2248 states, 1559 states have (on average 1.347658755612572) internal successors, (2101), 1605 states have internal predecessors, (2101), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:28,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:28,206 INFO L93 Difference]: Finished difference Result 4478 states and 6611 transitions. [2022-07-22 22:59:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:59:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-22 22:59:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:28,232 INFO L225 Difference]: With dead ends: 4478 [2022-07-22 22:59:28,232 INFO L226 Difference]: Without dead ends: 2237 [2022-07-22 22:59:28,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:28,251 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 3235 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:28,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3235 Valid, 3245 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:59:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2022-07-22 22:59:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2237. [2022-07-22 22:59:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 1551 states have (on average 1.3430045132172792) internal successors, (2083), 1594 states have internal predecessors, (2083), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-07-22 22:59:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 3234 transitions. [2022-07-22 22:59:28,468 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 3234 transitions. Word has length 16 [2022-07-22 22:59:28,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:28,469 INFO L495 AbstractCegarLoop]: Abstraction has 2237 states and 3234 transitions. [2022-07-22 22:59:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 3234 transitions. [2022-07-22 22:59:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 22:59:28,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:28,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:59:28,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1507349808, now seen corresponding path program 1 times [2022-07-22 22:59:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:28,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296327095] [2022-07-22 22:59:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:28,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:28,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:59:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:28,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296327095] [2022-07-22 22:59:28,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296327095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:28,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:28,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:59:28,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495697139] [2022-07-22 22:59:28,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:28,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:59:28,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:59:28,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:28,595 INFO L87 Difference]: Start difference. First operand 2237 states and 3234 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:28,685 INFO L93 Difference]: Finished difference Result 2239 states and 3235 transitions. [2022-07-22 22:59:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:59:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-22 22:59:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:28,700 INFO L225 Difference]: With dead ends: 2239 [2022-07-22 22:59:28,700 INFO L226 Difference]: Without dead ends: 2236 [2022-07-22 22:59:28,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:28,703 INFO L413 NwaCegarLoop]: 3231 mSDtfsCounter, 3220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:28,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3220 Valid, 3231 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:59:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-07-22 22:59:28,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2236. [2022-07-22 22:59:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 1551 states have (on average 1.3423597678916828) internal successors, (2082), 1593 states have internal predecessors, (2082), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-07-22 22:59:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 3232 transitions. [2022-07-22 22:59:28,838 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 3232 transitions. Word has length 17 [2022-07-22 22:59:28,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:28,839 INFO L495 AbstractCegarLoop]: Abstraction has 2236 states and 3232 transitions. [2022-07-22 22:59:28,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 3232 transitions. [2022-07-22 22:59:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 22:59:28,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:28,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 22:59:28,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash -517820206, now seen corresponding path program 1 times [2022-07-22 22:59:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:28,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082587407] [2022-07-22 22:59:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:28,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:59:28,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082587407] [2022-07-22 22:59:28,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082587407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:28,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:28,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:59:28,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142636359] [2022-07-22 22:59:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:59:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:59:28,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:28,937 INFO L87 Difference]: Start difference. First operand 2236 states and 3232 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:29,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:29,023 INFO L93 Difference]: Finished difference Result 2238 states and 3233 transitions. [2022-07-22 22:59:29,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:59:29,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-22 22:59:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:29,037 INFO L225 Difference]: With dead ends: 2238 [2022-07-22 22:59:29,037 INFO L226 Difference]: Without dead ends: 2235 [2022-07-22 22:59:29,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:29,043 INFO L413 NwaCegarLoop]: 3229 mSDtfsCounter, 3217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:29,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3217 Valid, 3229 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:59:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2022-07-22 22:59:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2235. [2022-07-22 22:59:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1551 states have (on average 1.3417150225660863) internal successors, (2081), 1592 states have internal predecessors, (2081), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2022-07-22 22:59:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3230 transitions. [2022-07-22 22:59:29,138 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3230 transitions. Word has length 18 [2022-07-22 22:59:29,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:29,138 INFO L495 AbstractCegarLoop]: Abstraction has 2235 states and 3230 transitions. [2022-07-22 22:59:29,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3230 transitions. [2022-07-22 22:59:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 22:59:29,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:29,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 22:59:29,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1126423667, now seen corresponding path program 1 times [2022-07-22 22:59:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:29,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585392391] [2022-07-22 22:59:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:59:29,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:29,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585392391] [2022-07-22 22:59:29,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585392391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:29,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:29,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:59:29,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803964104] [2022-07-22 22:59:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:29,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:59:29,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:59:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:29,251 INFO L87 Difference]: Start difference. First operand 2235 states and 3230 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:29,432 INFO L93 Difference]: Finished difference Result 5156 states and 7405 transitions. [2022-07-22 22:59:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:59:29,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-07-22 22:59:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:29,452 INFO L225 Difference]: With dead ends: 5156 [2022-07-22 22:59:29,452 INFO L226 Difference]: Without dead ends: 2927 [2022-07-22 22:59:29,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:59:29,466 INFO L413 NwaCegarLoop]: 3682 mSDtfsCounter, 1317 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 6488 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:29,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 6488 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:59:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2022-07-22 22:59:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2924. [2022-07-22 22:59:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2924 states, 2023 states have (on average 1.3232822540781017) internal successors, (2677), 2085 states have internal predecessors, (2677), 721 states have call successors, (721), 183 states have call predecessors, (721), 179 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2022-07-22 22:59:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4129 transitions. [2022-07-22 22:59:29,626 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 4129 transitions. Word has length 19 [2022-07-22 22:59:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:29,627 INFO L495 AbstractCegarLoop]: Abstraction has 2924 states and 4129 transitions. [2022-07-22 22:59:29,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 22:59:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 4129 transitions. [2022-07-22 22:59:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 22:59:29,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:29,638 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 22:59:29,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1530383769, now seen corresponding path program 1 times [2022-07-22 22:59:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:29,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954401513] [2022-07-22 22:59:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:59:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:59:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:59:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:59:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:59:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 22:59:29,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:29,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954401513] [2022-07-22 22:59:29,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954401513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:29,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:29,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:59:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164557349] [2022-07-22 22:59:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:29,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:59:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:59:29,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:59:29,835 INFO L87 Difference]: Start difference. First operand 2924 states and 4129 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 22:59:32,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:59:36,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:59:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:41,445 INFO L93 Difference]: Finished difference Result 6382 states and 9075 transitions. [2022-07-22 22:59:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:59:41,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-07-22 22:59:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:41,466 INFO L225 Difference]: With dead ends: 6382 [2022-07-22 22:59:41,467 INFO L226 Difference]: Without dead ends: 3473 [2022-07-22 22:59:41,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:59:41,478 INFO L413 NwaCegarLoop]: 2767 mSDtfsCounter, 2250 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 4417 mSolverCounterSat, 1618 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2548 SdHoareTripleChecker+Valid, 5589 SdHoareTripleChecker+Invalid, 6036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1618 IncrementalHoareTripleChecker+Valid, 4417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:41,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2548 Valid, 5589 Invalid, 6036 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1618 Valid, 4417 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-07-22 22:59:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2022-07-22 22:59:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2979. [2022-07-22 22:59:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2062 states have (on average 1.3205625606207565) internal successors, (2723), 2126 states have internal predecessors, (2723), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2022-07-22 22:59:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4199 transitions. [2022-07-22 22:59:41,619 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4199 transitions. Word has length 56 [2022-07-22 22:59:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:41,619 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 4199 transitions. [2022-07-22 22:59:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 22:59:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4199 transitions. [2022-07-22 22:59:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 22:59:41,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:41,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 22:59:41,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:41,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1423408288, now seen corresponding path program 1 times [2022-07-22 22:59:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:41,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782325204] [2022-07-22 22:59:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:41,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:59:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:59:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:59:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:59:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:59:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 22:59:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:41,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782325204] [2022-07-22 22:59:41,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782325204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:41,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:41,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:59:41,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688557035] [2022-07-22 22:59:41,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:41,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:59:41,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:41,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:59:41,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:59:41,784 INFO L87 Difference]: Start difference. First operand 2979 states and 4199 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 22:59:44,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:59:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:47,383 INFO L93 Difference]: Finished difference Result 6043 states and 8621 transitions. [2022-07-22 22:59:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:59:47,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2022-07-22 22:59:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:47,403 INFO L225 Difference]: With dead ends: 6043 [2022-07-22 22:59:47,404 INFO L226 Difference]: Without dead ends: 3079 [2022-07-22 22:59:47,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:59:47,422 INFO L413 NwaCegarLoop]: 2963 mSDtfsCounter, 1199 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 5461 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:47,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 5461 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2347 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 22:59:47,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2022-07-22 22:59:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2979. [2022-07-22 22:59:47,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2062 states have (on average 1.3176527643064986) internal successors, (2717), 2126 states have internal predecessors, (2717), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2022-07-22 22:59:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4193 transitions. [2022-07-22 22:59:47,549 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4193 transitions. Word has length 59 [2022-07-22 22:59:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:47,549 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 4193 transitions. [2022-07-22 22:59:47,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 22:59:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4193 transitions. [2022-07-22 22:59:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 22:59:47,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:47,552 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:47,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 22:59:47,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash -510939004, now seen corresponding path program 1 times [2022-07-22 22:59:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:47,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375128589] [2022-07-22 22:59:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 22:59:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 22:59:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:59:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 22:59:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:59:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 22:59:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375128589] [2022-07-22 22:59:47,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375128589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:47,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:47,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:59:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201513444] [2022-07-22 22:59:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:47,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:59:47,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:47,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:59:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:59:47,772 INFO L87 Difference]: Start difference. First operand 2979 states and 4193 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 22:59:50,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:59:52,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:59:52,445 INFO L93 Difference]: Finished difference Result 5069 states and 7078 transitions. [2022-07-22 22:59:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:59:52,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-07-22 22:59:52,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:59:52,462 INFO L225 Difference]: With dead ends: 5069 [2022-07-22 22:59:52,462 INFO L226 Difference]: Without dead ends: 2527 [2022-07-22 22:59:52,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:59:52,476 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 2867 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3130 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:59:52,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3130 Valid, 3657 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1490 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-07-22 22:59:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-07-22 22:59:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2408. [2022-07-22 22:59:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 1673 states have (on average 1.306634787806336) internal successors, (2186), 1719 states have internal predecessors, (2186), 569 states have call successors, (569), 170 states have call predecessors, (569), 165 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2022-07-22 22:59:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3309 transitions. [2022-07-22 22:59:52,602 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3309 transitions. Word has length 65 [2022-07-22 22:59:52,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:59:52,603 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3309 transitions. [2022-07-22 22:59:52,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 22:59:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3309 transitions. [2022-07-22 22:59:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 22:59:52,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:59:52,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:59:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 22:59:52,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:59:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:59:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2092234527, now seen corresponding path program 1 times [2022-07-22 22:59:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:59:52,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767063362] [2022-07-22 22:59:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:59:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:59:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:59:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:59:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:59:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:59:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:59:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:59:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:59:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 22:59:52,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:59:52,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767063362] [2022-07-22 22:59:52,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767063362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:59:52,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:59:52,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:59:52,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947355734] [2022-07-22 22:59:52,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:59:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:59:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:59:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:59:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:59:52,824 INFO L87 Difference]: Start difference. First operand 2408 states and 3309 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 22:59:55,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:59:57,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:59:59,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:00:01,458 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:00:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:00:06,990 INFO L93 Difference]: Finished difference Result 2557 states and 3525 transitions. [2022-07-22 23:00:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:00:06,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-07-22 23:00:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:00:07,005 INFO L225 Difference]: With dead ends: 2557 [2022-07-22 23:00:07,005 INFO L226 Difference]: Without dead ends: 2547 [2022-07-22 23:00:07,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:00:07,008 INFO L413 NwaCegarLoop]: 2384 mSDtfsCounter, 1145 mSDsluCounter, 4991 mSDsCounter, 0 mSdLazyCounter, 6747 mSolverCounterSat, 502 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 7375 SdHoareTripleChecker+Invalid, 7252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 6747 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:00:07,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 7375 Invalid, 7252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 6747 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2022-07-22 23:00:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-07-22 23:00:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2413. [2022-07-22 23:00:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 1677 states have (on average 1.3059033989266546) internal successors, (2190), 1723 states have internal predecessors, (2190), 569 states have call successors, (569), 170 states have call predecessors, (569), 166 states have return successors, (557), 548 states have call predecessors, (557), 554 states have call successors, (557) [2022-07-22 23:00:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 3316 transitions. [2022-07-22 23:00:07,148 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 3316 transitions. Word has length 65 [2022-07-22 23:00:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:00:07,148 INFO L495 AbstractCegarLoop]: Abstraction has 2413 states and 3316 transitions. [2022-07-22 23:00:07,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 23:00:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 3316 transitions. [2022-07-22 23:00:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 23:00:07,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:00:07,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:07,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:00:07,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:00:07,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:00:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash -922869091, now seen corresponding path program 1 times [2022-07-22 23:00:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:00:07,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629781657] [2022-07-22 23:00:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:00:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:00:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 23:00:07,265 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 23:00:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 23:00:07,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 23:00:07,424 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 23:00:07,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 23:00:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:00:07,430 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:00:07,433 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 23:00:07,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 11:00:07 BoogieIcfgContainer [2022-07-22 23:00:07,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 23:00:07,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 23:00:07,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 23:00:07,533 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 23:00:07,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:59:27" (3/4) ... [2022-07-22 23:00:07,536 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 23:00:07,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 23:00:07,537 INFO L158 Benchmark]: Toolchain (without parser) took 51311.85ms. Allocated memory was 115.3MB in the beginning and 587.2MB in the end (delta: 471.9MB). Free memory was 84.2MB in the beginning and 362.0MB in the end (delta: -277.9MB). Peak memory consumption was 192.6MB. Max. memory is 16.1GB. [2022-07-22 23:00:07,537 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 23:00:07,538 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2655.71ms. Allocated memory was 115.3MB in the beginning and 192.9MB in the end (delta: 77.6MB). Free memory was 83.5MB in the beginning and 120.0MB in the end (delta: -36.5MB). Peak memory consumption was 97.1MB. Max. memory is 16.1GB. [2022-07-22 23:00:07,538 INFO L158 Benchmark]: Boogie Procedure Inliner took 278.31ms. Allocated memory is still 192.9MB. Free memory was 120.0MB in the beginning and 84.4MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-07-22 23:00:07,538 INFO L158 Benchmark]: Boogie Preprocessor took 283.28ms. Allocated memory is still 192.9MB. Free memory was 84.4MB in the beginning and 86.1MB in the end (delta: -1.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-07-22 23:00:07,539 INFO L158 Benchmark]: RCFGBuilder took 7767.80ms. Allocated memory was 192.9MB in the beginning and 339.7MB in the end (delta: 146.8MB). Free memory was 86.1MB in the beginning and 187.3MB in the end (delta: -101.2MB). Peak memory consumption was 130.6MB. Max. memory is 16.1GB. [2022-07-22 23:00:07,540 INFO L158 Benchmark]: TraceAbstraction took 40315.41ms. Allocated memory was 339.7MB in the beginning and 587.2MB in the end (delta: 247.5MB). Free memory was 186.3MB in the beginning and 362.0MB in the end (delta: -175.8MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. [2022-07-22 23:00:07,540 INFO L158 Benchmark]: Witness Printer took 3.36ms. Allocated memory is still 587.2MB. Free memory is still 362.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 23:00:07,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2655.71ms. Allocated memory was 115.3MB in the beginning and 192.9MB in the end (delta: 77.6MB). Free memory was 83.5MB in the beginning and 120.0MB in the end (delta: -36.5MB). Peak memory consumption was 97.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 278.31ms. Allocated memory is still 192.9MB. Free memory was 120.0MB in the beginning and 84.4MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 283.28ms. Allocated memory is still 192.9MB. Free memory was 84.4MB in the beginning and 86.1MB in the end (delta: -1.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * RCFGBuilder took 7767.80ms. Allocated memory was 192.9MB in the beginning and 339.7MB in the end (delta: 146.8MB). Free memory was 86.1MB in the beginning and 187.3MB in the end (delta: -101.2MB). Peak memory consumption was 130.6MB. Max. memory is 16.1GB. * TraceAbstraction took 40315.41ms. Allocated memory was 339.7MB in the beginning and 587.2MB in the end (delta: 247.5MB). Free memory was 186.3MB in the beginning and 362.0MB in the end (delta: -175.8MB). Peak memory consumption was 71.7MB. Max. memory is 16.1GB. * Witness Printer took 3.36ms. Allocated memory is still 587.2MB. Free memory is still 362.0MB. 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={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10670] FCALL ldv_handler_precall() VAL [__this_module={18446744073709551616:18446744073709551618}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=2, tmp___1=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10671] CALL vhost_net_ioctl(var_group2, var_vhost_net_ioctl_27_p1, var_vhost_net_ioctl_27_p2) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={18446744073709551615:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={18446744073709551615:-17400}, lock={18446744073709551615:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={18446744073709551615:-17400}, lock={18446744073709551615:-17400}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, ldv_func_arg1={18446744073709551615:-17400}, ldv_func_arg1={18446744073709551615:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, ldv_func_arg1={18446744073709551615:-17400}, ldv_func_arg1={18446744073709551615:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, \result={18446744073709551617:-4}, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={18446744073709551617:-4}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-17416}, experimental_zcopytx=0, get_current()={18446744073709551617:-4}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={18446744073709551617:-4}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, dev={18446744073709551615:-17416}, dev={18446744073709551615:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={18446744073709551617:-4}, tmp->mm={0:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={18446744073709551615:-17416}, n={18446744073709551615:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=1, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={18446744073709551615:-17416}, n={18446744073709551615:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={18446744073709551615:-17416}, rx_sock={220:0}, tx_sock={217:0}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={18446744073709551615:-17416}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0, vq={18446744073709551615:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={18446744073709551615:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={18446744073709551615:8}, lock={18446744073709551615:8}, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(bit = (int )write_page & 7)=18446744073709551619, \old(ldv_mutex_mutex)=2, __this_module={18446744073709551616:18446744073709551618}, bit = (int )write_page & 7=18446744073709551619, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={215:0}, vhost_net_misc={216:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 19514 SdHoareTripleChecker+Valid, 35.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18450 mSDsluCounter, 38275 SdHoareTripleChecker+Invalid, 32.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14084 mSDsCounter, 3951 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15014 IncrementalHoareTripleChecker+Invalid, 18971 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3951 mSolverCounterUnsat, 24191 mSDtfsCounter, 15014 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2979occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 850 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-22 23:00:07,645 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-?-791161d [2022-07-22 23:00:09,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:00:09,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:00:09,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:00:09,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:00:09,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:00:09,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:00:09,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:00:09,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:00:09,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:00:09,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:00:09,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:00:09,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:00:09,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:00:09,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:00:09,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:00:09,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:00:09,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:00:09,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:00:09,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:00:09,562 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:00:09,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:00:09,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:00:09,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:00:09,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:00:09,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:00:09,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:00:09,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:00:09,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:00:09,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:00:09,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:00:09,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:00:09,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:00:09,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:00:09,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:00:09,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:00:09,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:00:09,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:00:09,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:00:09,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:00:09,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:00:09,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:00:09,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 23:00:09,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:00:09,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:00:09,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:00:09,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:00:09,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:00:09,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:00:09,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:00:09,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:00:09,621 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:00:09,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:00:09,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:00:09,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:00:09,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:00:09,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:00:09,623 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 23:00:09,623 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 23:00:09,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 23:00:09,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:00:09,624 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:00:09,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:00:09,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:00:09,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:00:09,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:00:09,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:00:09,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:00:09,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:00:09,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:00:09,625 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 23:00:09,625 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 23:00:09,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:00:09,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:00:09,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:00:09,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 23:00:09,626 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2022-07-22 23:00:09,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:00:09,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:00:09,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:00:09,995 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:00:09,996 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:00:09,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-07-22 23:00:10,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14bc86c5c/6227933373c4457eac06c9c49e8c072a/FLAG8c5d84b71 [2022-07-22 23:00:10,874 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:00:10,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2022-07-22 23:00:10,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14bc86c5c/6227933373c4457eac06c9c49e8c072a/FLAG8c5d84b71 [2022-07-22 23:00:11,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14bc86c5c/6227933373c4457eac06c9c49e8c072a [2022-07-22 23:00:11,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:00:11,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:00:11,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:00:11,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:00:11,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:00:11,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:11" (1/1) ... [2022-07-22 23:00:11,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cd6773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:11, skipping insertion in model container [2022-07-22 23:00:11,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:11" (1/1) ... [2022-07-22 23:00:11,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:00:11,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:00:12,872 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 23:00:12,879 INFO L158 Benchmark]: Toolchain (without parser) took 1809.81ms. Allocated memory was 52.4MB in the beginning and 111.1MB in the end (delta: 58.7MB). Free memory was 24.9MB in the beginning and 60.6MB in the end (delta: -35.7MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-07-22 23:00:12,880 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.8MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 23:00:12,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1806.45ms. Allocated memory was 52.4MB in the beginning and 111.1MB in the end (delta: 58.7MB). Free memory was 24.7MB in the beginning and 60.6MB in the end (delta: -35.9MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2022-07-22 23:00:12,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.8MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1806.45ms. Allocated memory was 52.4MB in the beginning and 111.1MB in the end (delta: 58.7MB). Free memory was 24.7MB in the beginning and 60.6MB in the end (delta: -35.9MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range