./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 0f8a17c6 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 0.2.1-dev-0f8a17c [2021-11-16 22:42:01,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 22:42:01,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 22:42:01,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 22:42:01,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 22:42:01,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 22:42:01,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 22:42:01,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 22:42:01,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 22:42:01,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 22:42:01,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 22:42:01,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 22:42:01,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 22:42:01,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 22:42:01,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 22:42:01,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 22:42:01,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 22:42:01,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 22:42:01,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 22:42:01,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 22:42:01,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 22:42:01,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 22:42:01,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 22:42:01,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 22:42:01,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 22:42:01,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 22:42:01,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 22:42:01,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 22:42:01,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 22:42:01,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 22:42:01,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 22:42:01,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 22:42:01,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 22:42:01,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 22:42:01,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 22:42:01,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 22:42:01,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 22:42:01,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 22:42:01,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 22:42:01,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 22:42:01,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 22:42:01,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 22:42:01,470 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 22:42:01,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 22:42:01,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 22:42:01,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 22:42:01,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 22:42:01,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 22:42:01,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 22:42:01,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 22:42:01,473 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 22:42:01,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 22:42:01,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 22:42:01,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 22:42:01,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 22:42:01,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 22:42:01,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 22:42:01,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 22:42:01,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 22:42:01,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 22:42:01,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 22:42:01,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 22:42:01,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 22:42:01,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 22:42:01,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 22:42:01,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 22:42:01,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 22:42:01,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 22:42:01,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 22:42:01,482 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 22:42:01,482 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 22:42:01,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 22:42:01,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 22:42:01,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-16 22:42:01,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 22:42:01,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 22:42:01,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 22:42:01,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 22:42:01,706 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 22:42:01,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-16 22:42:01,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e875bf18/49d4837e415249b7b6c5f06434b93181/FLAGda5d35c9e [2021-11-16 22:42:02,494 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 22:42:02,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-16 22:42:02,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e875bf18/49d4837e415249b7b6c5f06434b93181/FLAGda5d35c9e [2021-11-16 22:42:02,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e875bf18/49d4837e415249b7b6c5f06434b93181 [2021-11-16 22:42:02,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 22:42:02,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 22:42:02,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 22:42:02,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 22:42:02,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 22:42:02,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:42:02" (1/1) ... [2021-11-16 22:42:02,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ce835b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:02, skipping insertion in model container [2021-11-16 22:42:02,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:42:02" (1/1) ... [2021-11-16 22:42:02,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 22:42:02,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 22:42:04,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-16 22:42:05,009 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 22:42:05,020 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 22:42:05,390 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-16 22:42:05,398 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 22:42:05,491 INFO L208 MainTranslator]: Completed translation [2021-11-16 22:42:05,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05 WrapperNode [2021-11-16 22:42:05,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 22:42:05,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 22:42:05,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 22:42:05,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 22:42:05,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:05,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:05,803 INFO L137 Inliner]: procedures = 335, calls = 2629, calls flagged for inlining = 138, calls inlined = 130, statements flattened = 6646 [2021-11-16 22:42:05,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 22:42:05,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 22:42:05,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 22:42:05,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 22:42:05,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:05,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:05,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:05,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:06,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:06,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:06,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:06,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 22:42:06,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 22:42:06,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 22:42:06,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 22:42:06,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (1/1) ... [2021-11-16 22:42:06,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 22:42:06,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 22:42:06,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 22:42:06,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 22:42:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-16 22:42:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-16 22:42:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-16 22:42:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-16 22:42:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-16 22:42:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-16 22:42:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-16 22:42:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-16 22:42:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-16 22:42:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-16 22:42:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-16 22:42:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-16 22:42:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-16 22:42:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-16 22:42:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-16 22:42:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-16 22:42:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-16 22:42:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-16 22:42:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-16 22:42:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-16 22:42:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-16 22:42:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-16 22:42:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-16 22:42:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-16 22:42:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-16 22:42:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-16 22:42:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-16 22:42:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-16 22:42:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-16 22:42:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-16 22:42:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-16 22:42:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-16 22:42:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 22:42:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 22:42:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-16 22:42:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-16 22:42:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 22:42:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 22:42:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 22:42:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 22:42:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-16 22:42:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-16 22:42:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-16 22:42:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-16 22:42:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-16 22:42:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-16 22:42:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-16 22:42:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-16 22:42:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-16 22:42:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-16 22:42:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-16 22:42:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-16 22:42:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-16 22:42:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_open [2021-11-16 22:42:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_open [2021-11-16 22:42:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 22:42:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 22:42:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-16 22:42:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-16 22:42:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-16 22:42:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-16 22:42:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-16 22:42:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-16 22:42:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-16 22:42:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-16 22:42:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 22:42:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-16 22:42:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-16 22:42:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-16 22:42:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-16 22:42:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-16 22:42:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-16 22:42:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-16 22:42:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-16 22:42:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 22:42:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-16 22:42:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-16 22:42:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-16 22:42:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-16 22:42:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-16 22:42:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-16 22:42:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-16 22:42:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-16 22:42:06,251 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-16 22:42:06,252 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-16 22:42:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-16 22:42:06,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-16 22:42:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-16 22:42:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-16 22:42:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-16 22:42:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-16 22:42:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-16 22:42:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-16 22:42:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-16 22:42:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-16 22:42:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-16 22:42:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-16 22:42:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-16 22:42:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-16 22:42:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-16 22:42:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-16 22:42:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-16 22:42:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-16 22:42:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-16 22:42:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-16 22:42:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-16 22:42:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-16 22:42:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-16 22:42:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-16 22:42:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-16 22:42:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-16 22:42:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-16 22:42:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-16 22:42:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-16 22:42:06,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-16 22:42:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 22:42:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-16 22:42:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-16 22:42:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-16 22:42:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-16 22:42:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-16 22:42:06,263 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-16 22:42:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-16 22:42:06,266 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-16 22:42:06,266 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-16 22:42:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-16 22:42:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-16 22:42:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-16 22:42:06,267 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-16 22:42:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 22:42:06,267 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-16 22:42:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-16 22:42:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-16 22:42:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-16 22:42:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-16 22:42:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-16 22:42:06,268 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-16 22:42:06,268 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-16 22:42:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-16 22:42:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-16 22:42:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-16 22:42:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-16 22:42:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-16 22:42:06,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-16 22:42:06,269 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-16 22:42:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-16 22:42:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-16 22:42:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-16 22:42:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-16 22:42:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-16 22:42:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 22:42:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 22:42:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-16 22:42:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-16 22:42:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-16 22:42:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-16 22:42:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 22:42:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-16 22:42:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-16 22:42:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-16 22:42:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-16 22:42:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-16 22:42:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-16 22:42:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 22:42:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-16 22:42:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-16 22:42:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-16 22:42:06,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-16 22:42:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-16 22:42:06,273 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-16 22:42:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 22:42:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-16 22:42:06,273 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-16 22:42:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-16 22:42:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-16 22:42:06,274 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-16 22:42:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-16 22:42:06,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-16 22:42:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-16 22:42:06,275 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-16 22:42:06,275 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-16 22:42:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-16 22:42:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-16 22:42:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-16 22:42:06,276 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-16 22:42:06,276 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-16 22:42:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-16 22:42:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-16 22:42:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_release [2021-11-16 22:42:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_release [2021-11-16 22:42:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-16 22:42:06,277 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-16 22:42:06,277 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-16 22:42:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-16 22:42:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-16 22:42:06,278 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-16 22:42:06,278 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-16 22:42:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-16 22:42:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-16 22:42:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-16 22:42:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-16 22:42:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-16 22:42:06,279 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-16 22:42:06,279 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-16 22:42:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-16 22:42:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-16 22:42:06,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-16 22:42:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-16 22:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-16 22:42:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-16 22:42:06,281 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-16 22:42:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-16 22:42:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-16 22:42:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-16 22:42:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-16 22:42:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-16 22:42:06,282 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-16 22:42:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-16 22:42:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 22:42:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-16 22:42:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-16 22:42:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-16 22:42:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-16 22:42:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-16 22:42:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-16 22:42:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 22:42:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 22:42:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 22:42:06,284 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 22:42:07,089 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 22:42:07,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: assume -9223372036854775808 <= __copy_to_user_#t~ret139#1 && __copy_to_user_#t~ret139#1 <= 9223372036854775807;__copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect((if 0 != __copy_to_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: assume -9223372036854775808 <= __copy_to_user_#t~ret138#1 && __copy_to_user_#t~ret138#1 <= 9223372036854775807;__copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16 == __copy_to_user_~size#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10 == __copy_to_user_~size#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8 == __copy_to_user_~size#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := (if __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 else __copy_to_user_~tmp___2~4#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4 == __copy_to_user_~size#1; [2021-11-16 22:42:11,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:42:11,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2 == __copy_to_user_~size#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: assume -9223372036854775808 <= __copy_from_user_#t~ret133#1 && __copy_from_user_#t~ret133#1 <= 9223372036854775807;__copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~1#1 then 1 else 0), 0); srcloc: null [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: assume -9223372036854775808 <= __copy_from_user_#t~ret134#1 && __copy_from_user_#t~ret134#1 <= 9223372036854775807;__copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-11-16 22:42:12,869 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4 == __copy_from_user_~size#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8 == __copy_from_user_~size#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2 == __copy_from_user_~size#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~3#1 % 18446744073709551616 % 4294967296 - 4294967296); [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10 == __copy_from_user_~size#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-11-16 22:42:12,870 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16 == __copy_from_user_~size#1; [2021-11-16 22:42:13,948 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 22:42:14,002 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 22:42:14,003 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 22:42:14,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:42:14 BoogieIcfgContainer [2021-11-16 22:42:14,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 22:42:14,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 22:42:14,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 22:42:14,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 22:42:14,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:42:02" (1/3) ... [2021-11-16 22:42:14,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5812783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:42:14, skipping insertion in model container [2021-11-16 22:42:14,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:42:05" (2/3) ... [2021-11-16 22:42:14,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5812783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:42:14, skipping insertion in model container [2021-11-16 22:42:14,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:42:14" (3/3) ... [2021-11-16 22:42:14,015 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-16 22:42:14,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 22:42:14,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 22:42:14,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 22:42:14,087 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 22:42:14,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 22:42:14,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2021-11-16 22:42:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-16 22:42:14,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:14,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:14,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash -662016059, now seen corresponding path program 1 times [2021-11-16 22:42:14,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:14,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525587623] [2021-11-16 22:42:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:14,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:14,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:42:14,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:14,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525587623] [2021-11-16 22:42:14,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525587623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:14,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:14,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 22:42:14,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586142821] [2021-11-16 22:42:14,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:14,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:42:14,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:42:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:14,642 INFO L87 Difference]: Start difference. First operand has 2239 states, 1550 states have (on average 1.344516129032258) internal successors, (2084), 1596 states have internal predecessors, (2084), 579 states have call successors, (579), 108 states have call predecessors, (579), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:15,501 INFO L93 Difference]: Finished difference Result 4464 states and 6561 transitions. [2021-11-16 22:42:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:42:15,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-16 22:42:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:15,525 INFO L225 Difference]: With dead ends: 4464 [2021-11-16 22:42:15,526 INFO L226 Difference]: Without dead ends: 2228 [2021-11-16 22:42:15,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:15,547 INFO L933 BasicCegarLoop]: 3230 mSDtfsCounter, 3220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3220 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:15,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3220 Valid, 3230 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-16 22:42:15,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2021-11-16 22:42:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2228. [2021-11-16 22:42:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1542 states have (on average 1.3411154345006484) internal successors, (2068), 1585 states have internal predecessors, (2068), 578 states have call successors, (578), 108 states have call predecessors, (578), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-16 22:42:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3219 transitions. [2021-11-16 22:42:15,741 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3219 transitions. Word has length 16 [2021-11-16 22:42:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 3219 transitions. [2021-11-16 22:42:15,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3219 transitions. [2021-11-16 22:42:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-16 22:42:15,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:15,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:15,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 22:42:15,745 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 951309113, now seen corresponding path program 1 times [2021-11-16 22:42:15,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:15,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953313699] [2021-11-16 22:42:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:15,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:42:15,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:15,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953313699] [2021-11-16 22:42:15,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953313699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:15,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:15,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 22:42:15,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955272018] [2021-11-16 22:42:15,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:15,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:42:15,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:15,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:42:15,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:15,842 INFO L87 Difference]: Start difference. First operand 2228 states and 3219 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:16,052 INFO L93 Difference]: Finished difference Result 2230 states and 3220 transitions. [2021-11-16 22:42:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:42:16,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-16 22:42:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:16,067 INFO L225 Difference]: With dead ends: 2230 [2021-11-16 22:42:16,068 INFO L226 Difference]: Without dead ends: 2227 [2021-11-16 22:42:16,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:16,074 INFO L933 BasicCegarLoop]: 3216 mSDtfsCounter, 3205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:16,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 3216 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 22:42:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2021-11-16 22:42:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2227. [2021-11-16 22:42:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2227 states, 1542 states have (on average 1.3404669260700388) internal successors, (2067), 1584 states have internal predecessors, (2067), 577 states have call successors, (577), 108 states have call predecessors, (577), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-16 22:42:16,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2227 states to 2227 states and 3217 transitions. [2021-11-16 22:42:16,183 INFO L78 Accepts]: Start accepts. Automaton has 2227 states and 3217 transitions. Word has length 17 [2021-11-16 22:42:16,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:16,184 INFO L470 AbstractCegarLoop]: Abstraction has 2227 states and 3217 transitions. [2021-11-16 22:42:16,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2227 states and 3217 transitions. [2021-11-16 22:42:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-16 22:42:16,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:16,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:16,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-16 22:42:16,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -575213240, now seen corresponding path program 1 times [2021-11-16 22:42:16,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:16,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042289879] [2021-11-16 22:42:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:16,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:42:16,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:16,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042289879] [2021-11-16 22:42:16,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042289879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:16,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:16,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 22:42:16,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11767973] [2021-11-16 22:42:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:16,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:42:16,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:42:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:16,288 INFO L87 Difference]: Start difference. First operand 2227 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:16,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:16,494 INFO L93 Difference]: Finished difference Result 2229 states and 3218 transitions. [2021-11-16 22:42:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:42:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-16 22:42:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:16,508 INFO L225 Difference]: With dead ends: 2229 [2021-11-16 22:42:16,508 INFO L226 Difference]: Without dead ends: 2226 [2021-11-16 22:42:16,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:16,515 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 3202 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:16,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 3214 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 22:42:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2021-11-16 22:42:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2226. [2021-11-16 22:42:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 1542 states have (on average 1.3398184176394292) internal successors, (2066), 1583 states have internal predecessors, (2066), 576 states have call successors, (576), 108 states have call predecessors, (576), 107 states have return successors, (573), 568 states have call predecessors, (573), 573 states have call successors, (573) [2021-11-16 22:42:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3215 transitions. [2021-11-16 22:42:16,624 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3215 transitions. Word has length 18 [2021-11-16 22:42:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:16,625 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3215 transitions. [2021-11-16 22:42:16,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3215 transitions. [2021-11-16 22:42:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-16 22:42:16,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:16,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:16,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-16 22:42:16,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -652761060, now seen corresponding path program 1 times [2021-11-16 22:42:16,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:16,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765114860] [2021-11-16 22:42:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:16,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:16,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:42:16,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:16,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765114860] [2021-11-16 22:42:16,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765114860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:16,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:16,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-16 22:42:16,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492853412] [2021-11-16 22:42:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:16,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:42:16,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:16,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:42:16,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:16,702 INFO L87 Difference]: Start difference. First operand 2226 states and 3215 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:16,944 INFO L93 Difference]: Finished difference Result 5137 states and 7376 transitions. [2021-11-16 22:42:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:42:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-16 22:42:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:16,961 INFO L225 Difference]: With dead ends: 5137 [2021-11-16 22:42:16,962 INFO L226 Difference]: Without dead ends: 2913 [2021-11-16 22:42:16,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:42:16,974 INFO L933 BasicCegarLoop]: 3667 mSDtfsCounter, 1302 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:16,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 6466 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 22:42:16,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2021-11-16 22:42:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2910. [2021-11-16 22:42:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2009 states have (on average 1.321553011448482) internal successors, (2655), 2071 states have internal predecessors, (2655), 721 states have call successors, (721), 183 states have call predecessors, (721), 179 states have return successors, (731), 698 states have call predecessors, (731), 708 states have call successors, (731) [2021-11-16 22:42:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4107 transitions. [2021-11-16 22:42:17,168 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4107 transitions. Word has length 19 [2021-11-16 22:42:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:17,169 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4107 transitions. [2021-11-16 22:42:17,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-16 22:42:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4107 transitions. [2021-11-16 22:42:17,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-16 22:42:17,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:17,173 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:17,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 22:42:17,173 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:17,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1639297723, now seen corresponding path program 1 times [2021-11-16 22:42:17,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:17,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267372670] [2021-11-16 22:42:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:17,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 22:42:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-16 22:42:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 22:42:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 22:42:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 22:42:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:42:17,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:17,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267372670] [2021-11-16 22:42:17,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267372670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:17,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:17,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 22:42:17,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523395218] [2021-11-16 22:42:17,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:17,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 22:42:17,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 22:42:17,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 22:42:17,302 INFO L87 Difference]: Start difference. First operand 2910 states and 4107 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-16 22:42:20,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:24,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:26,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:30,729 INFO L93 Difference]: Finished difference Result 6348 states and 9025 transitions. [2021-11-16 22:42:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 22:42:30,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-16 22:42:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:30,750 INFO L225 Difference]: With dead ends: 6348 [2021-11-16 22:42:30,750 INFO L226 Difference]: Without dead ends: 3449 [2021-11-16 22:42:30,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 22:42:30,763 INFO L933 BasicCegarLoop]: 2763 mSDtfsCounter, 2218 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 3881 mSolverCounterSat, 1612 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 5494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1612 IncrementalHoareTripleChecker+Valid, 3881 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:30,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2516 Valid, 6103 Invalid, 5494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1612 Valid, 3881 Invalid, 1 Unknown, 0 Unchecked, 13.1s Time] [2021-11-16 22:42:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3449 states. [2021-11-16 22:42:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 2965. [2021-11-16 22:42:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31884765625) internal successors, (2701), 2112 states have internal predecessors, (2701), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-11-16 22:42:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4177 transitions. [2021-11-16 22:42:30,905 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4177 transitions. Word has length 56 [2021-11-16 22:42:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:30,906 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4177 transitions. [2021-11-16 22:42:30,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-16 22:42:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4177 transitions. [2021-11-16 22:42:30,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-16 22:42:30,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:30,912 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:30,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-16 22:42:30,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash -963749432, now seen corresponding path program 1 times [2021-11-16 22:42:30,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:30,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703421546] [2021-11-16 22:42:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:30,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 22:42:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 22:42:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 22:42:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 22:42:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 22:42:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:42:31,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:31,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703421546] [2021-11-16 22:42:31,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703421546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:31,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:31,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 22:42:31,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35950296] [2021-11-16 22:42:31,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:31,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 22:42:31,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 22:42:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 22:42:31,077 INFO L87 Difference]: Start difference. First operand 2965 states and 4177 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-16 22:42:33,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:36,531 INFO L93 Difference]: Finished difference Result 6019 states and 8585 transitions. [2021-11-16 22:42:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-16 22:42:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2021-11-16 22:42:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:36,551 INFO L225 Difference]: With dead ends: 6019 [2021-11-16 22:42:36,551 INFO L226 Difference]: Without dead ends: 3065 [2021-11-16 22:42:36,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 22:42:36,569 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 1192 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 627 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5913 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:36,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 5913 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 1854 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-16 22:42:36,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2021-11-16 22:42:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2965. [2021-11-16 22:42:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2048 states have (on average 1.31591796875) internal successors, (2695), 2112 states have internal predecessors, (2695), 726 states have call successors, (726), 183 states have call predecessors, (726), 190 states have return successors, (750), 713 states have call predecessors, (750), 713 states have call successors, (750) [2021-11-16 22:42:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4171 transitions. [2021-11-16 22:42:36,715 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4171 transitions. Word has length 62 [2021-11-16 22:42:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:36,717 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4171 transitions. [2021-11-16 22:42:36,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-16 22:42:36,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4171 transitions. [2021-11-16 22:42:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-16 22:42:36,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:36,720 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:36,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-16 22:42:36,721 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:36,722 INFO L85 PathProgramCache]: Analyzing trace with hash -566496063, now seen corresponding path program 1 times [2021-11-16 22:42:36,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:36,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533215526] [2021-11-16 22:42:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:36,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 22:42:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-16 22:42:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 22:42:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 22:42:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 22:42:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:42:36,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:36,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533215526] [2021-11-16 22:42:36,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533215526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:36,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:36,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 22:42:36,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531084848] [2021-11-16 22:42:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:36,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 22:42:36,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 22:42:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-16 22:42:36,852 INFO L87 Difference]: Start difference. First operand 2965 states and 4171 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-16 22:42:39,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:41,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:43,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:43,865 INFO L93 Difference]: Finished difference Result 5045 states and 7042 transitions. [2021-11-16 22:42:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 22:42:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2021-11-16 22:42:43,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:43,882 INFO L225 Difference]: With dead ends: 5045 [2021-11-16 22:42:43,882 INFO L226 Difference]: Without dead ends: 2513 [2021-11-16 22:42:43,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-16 22:42:43,894 INFO L933 BasicCegarLoop]: 2668 mSDtfsCounter, 2851 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 1200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3114 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 2684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:43,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3114 Valid, 3621 Invalid, 2684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1483 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-16 22:42:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-11-16 22:42:43,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2394. [2021-11-16 22:42:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 1659 states have (on average 1.3044002411091018) internal successors, (2164), 1705 states have internal predecessors, (2164), 569 states have call successors, (569), 170 states have call predecessors, (569), 165 states have return successors, (554), 547 states have call predecessors, (554), 554 states have call successors, (554) [2021-11-16 22:42:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3287 transitions. [2021-11-16 22:42:43,996 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3287 transitions. Word has length 62 [2021-11-16 22:42:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:43,997 INFO L470 AbstractCegarLoop]: Abstraction has 2394 states and 3287 transitions. [2021-11-16 22:42:43,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-16 22:42:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3287 transitions. [2021-11-16 22:42:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-16 22:42:44,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:44,000 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:44,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 22:42:44,001 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:44,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2018660585, now seen corresponding path program 1 times [2021-11-16 22:42:44,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:44,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35649286] [2021-11-16 22:42:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:44,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 22:42:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-16 22:42:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-16 22:42:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 22:42:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-16 22:42:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 22:42:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:42:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:42:44,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 22:42:44,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35649286] [2021-11-16 22:42:44,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35649286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 22:42:44,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:42:44,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 22:42:44,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469380738] [2021-11-16 22:42:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 22:42:44,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 22:42:44,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 22:42:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 22:42:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-16 22:42:44,189 INFO L87 Difference]: Start difference. First operand 2394 states and 3287 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-16 22:42:47,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:49,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:51,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:53,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:42:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:42:57,924 INFO L93 Difference]: Finished difference Result 2543 states and 3503 transitions. [2021-11-16 22:42:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 22:42:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2021-11-16 22:42:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:42:57,939 INFO L225 Difference]: With dead ends: 2543 [2021-11-16 22:42:57,939 INFO L226 Difference]: Without dead ends: 2533 [2021-11-16 22:42:57,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-16 22:42:57,941 INFO L933 BasicCegarLoop]: 2368 mSDtfsCounter, 1138 mSDsluCounter, 6492 mSDsCounter, 0 mSdLazyCounter, 5173 mSolverCounterSat, 502 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 5173 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-16 22:42:57,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 8860 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 5173 Invalid, 4 Unknown, 0 Unchecked, 13.6s Time] [2021-11-16 22:42:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-11-16 22:42:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2399. [2021-11-16 22:42:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1663 states have (on average 1.3036680697534575) internal successors, (2168), 1709 states have internal predecessors, (2168), 569 states have call successors, (569), 170 states have call predecessors, (569), 166 states have return successors, (557), 548 states have call predecessors, (557), 554 states have call successors, (557) [2021-11-16 22:42:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3294 transitions. [2021-11-16 22:42:58,040 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3294 transitions. Word has length 65 [2021-11-16 22:42:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:42:58,041 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3294 transitions. [2021-11-16 22:42:58,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-16 22:42:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3294 transitions. [2021-11-16 22:42:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-16 22:42:58,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:42:58,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:58,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-16 22:42:58,044 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:42:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:42:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1285989531, now seen corresponding path program 1 times [2021-11-16 22:42:58,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 22:42:58,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787908802] [2021-11-16 22:42:58,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:42:58,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 22:42:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 22:42:58,141 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-16 22:42:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 22:42:58,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-16 22:42:58,320 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-16 22:42:58,321 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-16 22:42:58,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-16 22:42:58,325 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:42:58,328 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-16 22:42:58,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:42:58 BoogieIcfgContainer [2021-11-16 22:42:58,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-16 22:42:58,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-16 22:42:58,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-16 22:42:58,416 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-16 22:42:58,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:42:14" (3/4) ... [2021-11-16 22:42:58,419 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-16 22:42:58,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-16 22:42:58,420 INFO L158 Benchmark]: Toolchain (without parser) took 55625.01ms. Allocated memory was 92.3MB in the beginning and 614.5MB in the end (delta: 522.2MB). Free memory was 46.9MB in the beginning and 161.0MB in the end (delta: -114.1MB). Peak memory consumption was 409.2MB. Max. memory is 16.1GB. [2021-11-16 22:42:58,420 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 49.0MB in the beginning and 48.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 22:42:58,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2697.26ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 46.6MB in the beginning and 92.3MB in the end (delta: -45.7MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2021-11-16 22:42:58,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 310.23ms. Allocated memory is still 159.4MB. Free memory was 92.3MB in the beginning and 57.1MB in the end (delta: 35.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-11-16 22:42:58,421 INFO L158 Benchmark]: Boogie Preprocessor took 290.44ms. Allocated memory is still 159.4MB. Free memory was 57.1MB in the beginning and 50.5MB in the end (delta: 6.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-11-16 22:42:58,421 INFO L158 Benchmark]: RCFGBuilder took 7911.84ms. Allocated memory was 159.4MB in the beginning and 417.3MB in the end (delta: 257.9MB). Free memory was 50.5MB in the beginning and 205.7MB in the end (delta: -155.2MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. [2021-11-16 22:42:58,422 INFO L158 Benchmark]: TraceAbstraction took 44406.02ms. Allocated memory was 417.3MB in the beginning and 614.5MB in the end (delta: 197.1MB). Free memory was 204.6MB in the beginning and 162.0MB in the end (delta: 42.6MB). Peak memory consumption was 240.8MB. Max. memory is 16.1GB. [2021-11-16 22:42:58,423 INFO L158 Benchmark]: Witness Printer took 3.39ms. Allocated memory is still 614.5MB. Free memory was 162.0MB in the beginning and 161.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 22:42:58,424 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 92.3MB. Free memory was 49.0MB in the beginning and 48.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2697.26ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 46.6MB in the beginning and 92.3MB in the end (delta: -45.7MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 310.23ms. Allocated memory is still 159.4MB. Free memory was 92.3MB in the beginning and 57.1MB in the end (delta: 35.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 290.44ms. Allocated memory is still 159.4MB. Free memory was 57.1MB in the beginning and 50.5MB in the end (delta: 6.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * RCFGBuilder took 7911.84ms. Allocated memory was 159.4MB in the beginning and 417.3MB in the end (delta: 257.9MB). Free memory was 50.5MB in the beginning and 205.7MB in the end (delta: -155.2MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. * TraceAbstraction took 44406.02ms. Allocated memory was 417.3MB in the beginning and 614.5MB in the end (delta: 197.1MB). Free memory was 204.6MB in the beginning and 162.0MB in the end (delta: 42.6MB). Peak memory consumption was 240.8MB. Max. memory is 16.1GB. * Witness Printer took 3.39ms. Allocated memory is still 614.5MB. Free memory was 162.0MB in the beginning and 161.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10992]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 10595. Possible FailurePath: [L5971] static unsigned int vhost_zcopy_mask ; [L9348] static int experimental_zcopytx ; [L10590-L10593] static struct file_operations const vhost_net_fops = {& __this_module, & noop_llseek, 0, 0, 0, 0, 0, 0, & vhost_net_ioctl, & vhost_net_compat_ioctl, 0, & vhost_net_open, 0, & vhost_net_release, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; [L10594-L10595] static struct miscdevice vhost_net_misc = {238, "vhost-net", & vhost_net_fops, {0, 0}, 0, 0, 0, (unsigned short)0}; [L10620] int LDV_IN_INTERRUPT ; [L11002] static int ldv_mutex_cred_guard_mutex ; [L11109] static int ldv_mutex_lock ; [L11216] static int ldv_mutex_mtx ; [L11323] static int ldv_mutex_mutex ; VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=-2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=-2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=-2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=4294967295, \result={0:4294967295}, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=4294967295, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={8589934595:-17400}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={8589934595:-17400}, lock={8589934595:-17400}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934595:-17400}, lock={8589934595:-17400}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934595:-17400}, ldv_func_arg1={8589934595:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, ldv_func_arg1={8589934595:-17400}, ldv_func_arg1={8589934595:-17400}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={8589934594:-4}, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={8589934594:-4}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, experimental_zcopytx=0, get_current()={8589934594:-4}, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={8589934594:-4}, tmp->mm={0:0}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, dev={8589934595:-17416}, dev={8589934595:-17416}, dev->mm={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, tmp={8589934594:-4}, tmp->mm={0:0}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={215:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={8589934596:8589934597}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={215:0}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, rx_sock={220:0}, tx_sock={215:0}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={8589934595:-17416}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0, vq={8589934595:0}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934595:8}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={8589934595:8}, lock={8589934595:8}, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={8589934596:8589934597}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={216:0}, vhost_net_misc={217:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 109 procedures, 2239 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.2s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 41.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 19392 SdHoareTripleChecker+Valid, 39.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18328 mSDsluCounter, 40623 SdHoareTripleChecker+Invalid, 36.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16550 mSDsCounter, 3945 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12404 IncrementalHoareTripleChecker+Invalid, 16356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3945 mSolverCounterUnsat, 24073 mSDtfsCounter, 12404 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2965occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 840 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 307 ConstructedInterpolants, 0 QuantifiedInterpolants, 487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-16 22:42:58,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 22:43:00,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 22:43:00,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 22:43:00,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 22:43:00,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 22:43:00,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 22:43:00,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 22:43:00,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 22:43:00,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 22:43:00,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 22:43:00,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 22:43:00,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 22:43:00,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 22:43:00,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 22:43:00,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 22:43:00,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 22:43:00,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 22:43:00,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 22:43:00,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 22:43:00,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 22:43:00,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 22:43:00,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 22:43:00,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 22:43:00,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 22:43:00,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 22:43:00,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 22:43:00,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 22:43:00,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 22:43:00,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 22:43:00,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 22:43:00,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 22:43:00,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 22:43:00,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 22:43:00,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 22:43:00,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 22:43:00,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 22:43:00,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 22:43:00,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 22:43:00,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 22:43:00,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 22:43:00,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 22:43:00,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-16 22:43:00,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 22:43:00,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 22:43:00,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 22:43:00,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 22:43:00,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 22:43:00,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 22:43:00,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 22:43:00,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 22:43:00,414 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 22:43:00,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 22:43:00,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 22:43:00,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 22:43:00,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 22:43:00,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 22:43:00,416 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-16 22:43:00,416 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-16 22:43:00,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 22:43:00,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 22:43:00,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 22:43:00,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 22:43:00,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 22:43:00,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 22:43:00,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 22:43:00,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 22:43:00,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 22:43:00,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 22:43:00,418 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-16 22:43:00,419 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-16 22:43:00,419 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 22:43:00,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 22:43:00,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 22:43:00,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 22:43:00,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-16 22:43:00,420 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4e2d1a15968d1244ea21dd78c93930ffcefcf7ed108cd6721571103f64feb4f [2021-11-16 22:43:00,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 22:43:00,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 22:43:00,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 22:43:00,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 22:43:00,751 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 22:43:00,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-16 22:43:00,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e238e53/14d02a653941482eb55b433d974176dd/FLAG86abe0af5 [2021-11-16 22:43:01,534 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 22:43:01,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-16 22:43:01,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e238e53/14d02a653941482eb55b433d974176dd/FLAG86abe0af5 [2021-11-16 22:43:01,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40e238e53/14d02a653941482eb55b433d974176dd [2021-11-16 22:43:01,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 22:43:01,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 22:43:01,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 22:43:01,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 22:43:01,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 22:43:01,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:43:01" (1/1) ... [2021-11-16 22:43:01,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9e9a77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:01, skipping insertion in model container [2021-11-16 22:43:01,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:43:01" (1/1) ... [2021-11-16 22:43:01,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 22:43:01,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 22:43:03,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-16 22:43:03,864 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 22:43:03,890 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 22:43:04,283 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.7.3/main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i[372197,372210] [2021-11-16 22:43:04,290 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 22:43:04,380 INFO L208 MainTranslator]: Completed translation [2021-11-16 22:43:04,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04 WrapperNode [2021-11-16 22:43:04,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 22:43:04,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 22:43:04,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 22:43:04,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 22:43:04,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,658 INFO L137 Inliner]: procedures = 350, calls = 2627, calls flagged for inlining = 143, calls inlined = 135, statements flattened = 6445 [2021-11-16 22:43:04,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 22:43:04,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 22:43:04,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 22:43:04,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 22:43:04,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 22:43:04,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 22:43:04,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 22:43:04,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 22:43:04,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (1/1) ... [2021-11-16 22:43:04,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 22:43:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 22:43:04,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 22:43:04,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 22:43:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_add_used_and_signal [2021-11-16 22:43:04,948 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_add_used_and_signal [2021-11-16 22:43:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toiovecend [2021-11-16 22:43:04,948 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toiovecend [2021-11-16 22:43:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_net [2021-11-16 22:43:04,948 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_net [2021-11-16 22:43:04,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-16 22:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_free_iovecs [2021-11-16 22:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_free_iovecs [2021-11-16 22:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-16 22:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-16 22:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-16 22:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-16 22:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure vq_access_ok [2021-11-16 22:43:04,949 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_access_ok [2021-11-16 22:43:04,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-16 22:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-16 22:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_flush [2021-11-16 22:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_flush [2021-11-16 22:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-16 22:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-16 22:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-16 22:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_check_owner [2021-11-16 22:43:04,950 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_check_owner [2021-11-16 22:43:04,950 INFO L130 BoogieDeclarations]: Found specification of procedure log_write [2021-11-16 22:43:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure log_write [2021-11-16 22:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx [2021-11-16 22:43:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx [2021-11-16 22:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-16 22:43:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-16 22:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-16 22:43:04,951 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-16 22:43:04,951 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-16 22:43:04,952 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-16 22:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_vq_reset [2021-11-16 22:43:04,952 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_vq_reset [2021-11-16 22:43:04,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-16 22:43:04,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-16 22:43:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure vq_log_access_ok [2021-11-16 22:43:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_log_access_ok [2021-11-16 22:43:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-16 22:43:04,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-16 22:43:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-16 22:43:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-16 22:43:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2021-11-16 22:43:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-16 22:43:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-16 22:43:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure __vhost_add_used_n [2021-11-16 22:43:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __vhost_add_used_n [2021-11-16 22:43:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_start [2021-11-16 22:43:04,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_start [2021-11-16 22:43:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_queue [2021-11-16 22:43:04,955 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_queue [2021-11-16 22:43:04,956 INFO L130 BoogieDeclarations]: Found specification of procedure handle_rx [2021-11-16 22:43:04,956 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_rx [2021-11-16 22:43:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure handle_tx_kick [2021-11-16 22:43:04,957 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_tx_kick [2021-11-16 22:43:04,957 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-16 22:43:04,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-16 22:43:04,958 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-16 22:43:04,958 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-16 22:43:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-16 22:43:04,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-16 22:43:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_fget [2021-11-16 22:43:04,959 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_fget [2021-11-16 22:43:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_init [2021-11-16 22:43:04,959 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_init [2021-11-16 22:43:04,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 22:43:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-16 22:43:04,960 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-16 22:43:04,960 INFO L130 BoogieDeclarations]: Found specification of procedure vq_memory_access_ok [2021-11-16 22:43:04,960 INFO L138 BoogieDeclarations]: Found implementation of procedure vq_memory_access_ok [2021-11-16 22:43:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure move_iovec_hdr [2021-11-16 22:43:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure move_iovec_hdr [2021-11-16 22:43:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 22:43:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-16 22:43:04,961 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-16 22:43:04,961 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_queue [2021-11-16 22:43:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_queue [2021-11-16 22:43:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop [2021-11-16 22:43:04,962 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop [2021-11-16 22:43:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-16 22:43:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-16 22:43:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-16 22:43:04,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 22:43:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-16 22:43:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 22:43:04,963 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_dev_cleanup [2021-11-16 22:43:04,963 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_dev_cleanup [2021-11-16 22:43:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_callback [2021-11-16 22:43:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_callback [2021-11-16 22:43:04,964 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-16 22:43:04,964 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-16 22:43:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-16 22:43:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush_vq [2021-11-16 22:43:04,965 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush_vq [2021-11-16 22:43:04,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-16 22:43:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-16 22:43:04,966 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_stop_vq [2021-11-16 22:43:04,966 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_stop_vq [2021-11-16 22:43:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-16 22:43:04,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-16 22:43:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-16 22:43:04,967 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-16 22:43:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-16 22:43:04,967 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-16 22:43:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-16 22:43:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-16 22:43:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure next_desc [2021-11-16 22:43:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure next_desc [2021-11-16 22:43:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure iov_length [2021-11-16 22:43:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure iov_length [2021-11-16 22:43:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure tx_poll_stop [2021-11-16 22:43:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_poll_stop [2021-11-16 22:43:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-16 22:43:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-16 22:43:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-16 22:43:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-16 22:43:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-16 22:43:04,972 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-16 22:43:04,972 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_has_feature [2021-11-16 22:43:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_has_feature [2021-11-16 22:43:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-16 22:43:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-16 22:43:04,974 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2021-11-16 22:43:04,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2021-11-16 22:43:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_init [2021-11-16 22:43:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_init [2021-11-16 22:43:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fileget [2021-11-16 22:43:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fileget [2021-11-16 22:43:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_flush [2021-11-16 22:43:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_flush [2021-11-16 22:43:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-16 22:43:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-16 22:43:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-16 22:43:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-16 22:43:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2021-11-16 22:43:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put [2021-11-16 22:43:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put [2021-11-16 22:43:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-16 22:43:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-16 22:43:04,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex [2021-11-16 22:43:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex [2021-11-16 22:43:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2021-11-16 22:43:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2021-11-16 22:43:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure translate_desc [2021-11-16 22:43:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_desc [2021-11-16 22:43:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2021-11-16 22:43:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2021-11-16 22:43:04,982 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_ioctl [2021-11-16 22:43:04,982 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_ioctl [2021-11-16 22:43:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_net_disable_vq [2021-11-16 22:43:04,983 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_net_disable_vq [2021-11-16 22:43:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-16 22:43:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-16 22:43:04,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-16 22:43:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-16 22:43:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure mmput [2021-11-16 22:43:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure mmput [2021-11-16 22:43:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-16 22:43:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-16 22:43:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-16 22:43:04,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-16 22:43:04,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-16 22:43:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-16 22:43:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_ubuf_put_and_wait [2021-11-16 22:43:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_ubuf_put_and_wait [2021-11-16 22:43:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2021-11-16 22:43:04,985 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2021-11-16 22:43:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 22:43:04,985 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_cpu_idle [2021-11-16 22:43:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_cpu_idle [2021-11-16 22:43:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-16 22:43:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-16 22:43:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_get_vq_desc [2021-11-16 22:43:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_get_vq_desc [2021-11-16 22:43:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 22:43:04,986 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2021-11-16 22:43:04,986 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2021-11-16 22:43:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_enable_notify [2021-11-16 22:43:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_enable_notify [2021-11-16 22:43:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_stop [2021-11-16 22:43:04,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_stop [2021-11-16 22:43:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 22:43:04,987 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-16 22:43:04,988 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-16 22:43:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-16 22:43:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-16 22:43:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-16 22:43:04,988 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-11-16 22:43:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-11-16 22:43:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-16 22:43:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-16 22:43:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-16 22:43:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure memory_access_ok [2021-11-16 22:43:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure memory_access_ok [2021-11-16 22:43:04,989 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-16 22:43:04,989 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-16 22:43:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-16 22:43:04,990 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-16 22:43:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_work_seq_done [2021-11-16 22:43:04,990 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_work_seq_done [2021-11-16 22:43:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-16 22:43:04,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-16 22:43:04,990 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-16 22:43:04,991 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-16 22:43:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_disable_notify [2021-11-16 22:43:04,991 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_disable_notify [2021-11-16 22:43:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-16 22:43:04,991 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-16 22:43:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-16 22:43:04,991 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-16 22:43:04,991 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_update_used_flags [2021-11-16 22:43:04,992 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_update_used_flags [2021-11-16 22:43:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_discard_vq_desc [2021-11-16 22:43:04,992 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_discard_vq_desc [2021-11-16 22:43:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-11-16 22:43:04,992 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-11-16 22:43:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_flush [2021-11-16 22:43:04,992 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_flush [2021-11-16 22:43:04,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex [2021-11-16 22:43:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex [2021-11-16 22:43:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure log_access_ok [2021-11-16 22:43:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure log_access_ok [2021-11-16 22:43:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-16 22:43:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-16 22:43:04,993 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-16 22:43:04,993 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-16 22:43:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_signal [2021-11-16 22:43:04,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_signal [2021-11-16 22:43:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-16 22:43:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_zerocopy_signal_used [2021-11-16 22:43:04,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_zerocopy_signal_used [2021-11-16 22:43:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure vhost_poll_start [2021-11-16 22:43:04,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vhost_poll_start [2021-11-16 22:43:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-16 22:43:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-16 22:43:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 22:43:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 22:43:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-16 22:43:04,995 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-16 22:43:05,800 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 22:43:05,805 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 22:43:22,313 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857: SUMMARY for call __copy_to_user_#t~ret139#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-16 22:43:22,314 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5857-1: __copy_to_user_~tmp___1~3#1 := __copy_to_user_#t~ret139#1;havoc __copy_to_user_#t~ret139#1; [2021-11-16 22:43:22,314 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845: SUMMARY for call __copy_to_user_#t~ret138#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_to_user_~ret~2#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-16 22:43:22,314 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5845-1: __copy_to_user_~tmp___0~6#1 := __copy_to_user_#t~ret138#1;havoc __copy_to_user_#t~ret138#1; [2021-11-16 22:43:22,314 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume __copy_to_user_#t~switch137#1; [2021-11-16 22:43:22,314 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5866: assume !__copy_to_user_#t~switch137#1; [2021-11-16 22:43:22,314 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume 0bv64 != __copy_to_user_~tmp___1~3#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,315 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5858: assume !(0bv64 != __copy_to_user_~tmp___1~3#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,315 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume __copy_to_user_#t~switch137#1; [2021-11-16 22:43:22,315 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5854: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := true; [2021-11-16 22:43:22,315 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5825: havoc __copy_to_user_#t~switch137#1; [2021-11-16 22:43:22,315 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume 0bv64 != __copy_to_user_~tmp___0~6#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,315 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5846: assume !(0bv64 != __copy_to_user_~tmp___0~6#1);__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,316 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume __copy_to_user_#t~switch137#1; [2021-11-16 22:43:22,316 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5842: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 16bv32 == __copy_to_user_~size#1; [2021-11-16 22:43:22,316 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,316 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5838: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 10bv32 == __copy_to_user_~size#1; [2021-11-16 22:43:22,316 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867: SUMMARY for call __copy_to_user_#t~ret140#1 := copy_user_generic(__copy_to_user_~dst#1.base, __copy_to_user_~dst#1.offset, __copy_to_user_~src#1.base, __copy_to_user_~src#1.offset, __copy_to_user_~size#1); srcloc: null [2021-11-16 22:43:22,316 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,317 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5834: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 8bv32 == __copy_to_user_~size#1; [2021-11-16 22:43:22,317 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5867-1: __copy_to_user_~tmp___2~4#1 := __copy_to_user_#t~ret140#1;havoc __copy_to_user_#t~ret140#1;__copy_to_user_#res#1 := __copy_to_user_~tmp___2~4#1[32:0]; [2021-11-16 22:43:22,317 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,317 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5830: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 4bv32 == __copy_to_user_~size#1; [2021-11-16 22:43:22,317 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume __copy_to_user_#t~switch137#1;__copy_to_user_#res#1 := __copy_to_user_~ret~2#1; [2021-11-16 22:43:22,317 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !__copy_to_user_#t~switch137#1;__copy_to_user_#t~switch137#1 := __copy_to_user_#t~switch137#1 || 2bv32 == __copy_to_user_~size#1; [2021-11-16 22:43:30,907 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785: SUMMARY for call __copy_from_user_#t~ret133#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-16 22:43:30,907 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5785-1: __copy_from_user_~tmp___0~5#1 := __copy_from_user_#t~ret133#1;havoc __copy_from_user_#t~ret133#1; [2021-11-16 22:43:30,907 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume 0bv64 != __copy_from_user_~tmp___0~5#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5786: assume !(0bv64 != __copy_from_user_~tmp___0~5#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5760: havoc __copy_from_user_#t~switch132#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume __copy_from_user_#t~switch132#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5794: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := true; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798: SUMMARY for call __copy_from_user_#t~ret134#1 := ldv__builtin_expect(~sign_extendFrom32To64((if 0bv32 != __copy_from_user_~ret~1#1 then 1bv32 else 0bv32)), 0bv64); srcloc: null [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5798-1: __copy_from_user_~tmp___1~2#1 := __copy_from_user_#t~ret134#1;havoc __copy_from_user_#t~ret134#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume 0bv64 != __copy_from_user_~tmp___1~2#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5799: assume !(0bv64 != __copy_from_user_~tmp___1~2#1);__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5766: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 4bv32 == __copy_from_user_~size#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5771: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 8bv32 == __copy_from_user_~size#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 2bv32 == __copy_from_user_~size#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume __copy_from_user_#t~switch132#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5807: assume !__copy_from_user_#t~switch132#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808-1: __copy_from_user_~tmp___2~3#1 := __copy_from_user_#t~ret135#1;havoc __copy_from_user_#t~ret135#1;__copy_from_user_#res#1 := __copy_from_user_~tmp___2~3#1[32:0]; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5808: SUMMARY for call __copy_from_user_#t~ret135#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume __copy_from_user_#t~switch132#1;__copy_from_user_#res#1 := __copy_from_user_~ret~1#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5776: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 10bv32 == __copy_from_user_~size#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume __copy_from_user_#t~switch132#1; [2021-11-16 22:43:30,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5781: assume !__copy_from_user_#t~switch132#1;__copy_from_user_#t~switch132#1 := __copy_from_user_#t~switch132#1 || 16bv32 == __copy_from_user_~size#1; [2021-11-16 22:43:39,064 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 22:43:39,092 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 22:43:39,092 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 22:43:39,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:43:39 BoogieIcfgContainer [2021-11-16 22:43:39,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 22:43:39,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 22:43:39,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 22:43:39,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 22:43:39,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:43:01" (1/3) ... [2021-11-16 22:43:39,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8ac44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:43:39, skipping insertion in model container [2021-11-16 22:43:39,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:43:04" (2/3) ... [2021-11-16 22:43:39,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8ac44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:43:39, skipping insertion in model container [2021-11-16 22:43:39,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:43:39" (3/3) ... [2021-11-16 22:43:39,104 INFO L111 eAbstractionObserver]: Analyzing ICFG main1_drivers-vhost-vhost_net-ko--32_7a--linux-3.7.3.i [2021-11-16 22:43:39,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 22:43:39,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 22:43:39,167 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 22:43:39,175 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 22:43:39,175 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 22:43:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) [2021-11-16 22:43:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-16 22:43:39,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:39,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:39,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash -801145376, now seen corresponding path program 1 times [2021-11-16 22:43:39,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:39,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667648645] [2021-11-16 22:43:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:39,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:39,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:39,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:39,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-16 22:43:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:39,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 22:43:39,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:40,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:40,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:40,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667648645] [2021-11-16 22:43:40,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667648645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:40,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:40,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-16 22:43:40,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553438206] [2021-11-16 22:43:40,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:40,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:43:40,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:40,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:43:40,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:40,288 INFO L87 Difference]: Start difference. First operand has 2218 states, 1540 states have (on average 1.346103896103896) internal successors, (2073), 1586 states have internal predecessors, (2073), 572 states have call successors, (572), 104 states have call predecessors, (572), 104 states have return successors, (572), 567 states have call predecessors, (572), 572 states have call successors, (572) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:42,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:43:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:43:42,596 INFO L93 Difference]: Finished difference Result 4422 states and 6498 transitions. [2021-11-16 22:43:42,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:43:42,599 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-16 22:43:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:43:42,633 INFO L225 Difference]: With dead ends: 4422 [2021-11-16 22:43:42,633 INFO L226 Difference]: Without dead ends: 2207 [2021-11-16 22:43:42,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:42,658 INFO L933 BasicCegarLoop]: 3205 mSDtfsCounter, 3193 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3193 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:43:42,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3193 Valid, 3205 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-16 22:43:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-16 22:43:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2021-11-16 22:43:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1532 states have (on average 1.3426892950391645) internal successors, (2057), 1575 states have internal predecessors, (2057), 571 states have call successors, (571), 104 states have call predecessors, (571), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-16 22:43:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3194 transitions. [2021-11-16 22:43:42,926 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3194 transitions. Word has length 16 [2021-11-16 22:43:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:43:42,927 INFO L470 AbstractCegarLoop]: Abstraction has 2207 states and 3194 transitions. [2021-11-16 22:43:42,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3194 transitions. [2021-11-16 22:43:42,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-16 22:43:42,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:42,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:42,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-16 22:43:43,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:43:43,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash 933280137, now seen corresponding path program 1 times [2021-11-16 22:43:43,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:43,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827557709] [2021-11-16 22:43:43,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:43,146 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:43,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:43,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-16 22:43:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:43,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 22:43:43,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:43,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:44,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:44,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827557709] [2021-11-16 22:43:44,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827557709] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:44,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:44,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-16 22:43:44,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140876613] [2021-11-16 22:43:44,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:44,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:43:44,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:43:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:44,140 INFO L87 Difference]: Start difference. First operand 2207 states and 3194 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:46,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:43:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:43:46,302 INFO L93 Difference]: Finished difference Result 2209 states and 3195 transitions. [2021-11-16 22:43:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:43:46,303 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-16 22:43:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:43:46,316 INFO L225 Difference]: With dead ends: 2209 [2021-11-16 22:43:46,316 INFO L226 Difference]: Without dead ends: 2206 [2021-11-16 22:43:46,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:46,318 INFO L933 BasicCegarLoop]: 3191 mSDtfsCounter, 3178 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:43:46,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3178 Valid, 3191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-16 22:43:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-16 22:43:46,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2021-11-16 22:43:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1532 states have (on average 1.3420365535248042) internal successors, (2056), 1574 states have internal predecessors, (2056), 570 states have call successors, (570), 104 states have call predecessors, (570), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-16 22:43:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3192 transitions. [2021-11-16 22:43:46,423 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3192 transitions. Word has length 17 [2021-11-16 22:43:46,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:43:46,423 INFO L470 AbstractCegarLoop]: Abstraction has 2206 states and 3192 transitions. [2021-11-16 22:43:46,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:46,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3192 transitions. [2021-11-16 22:43:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-16 22:43:46,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:46,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:46,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-16 22:43:46,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:43:46,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:46,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:46,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1134098941, now seen corresponding path program 1 times [2021-11-16 22:43:46,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:46,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240090534] [2021-11-16 22:43:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:46,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:46,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:46,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:46,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-16 22:43:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:47,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 22:43:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:47,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:47,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:47,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240090534] [2021-11-16 22:43:47,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240090534] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:47,620 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:47,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-16 22:43:47,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537908794] [2021-11-16 22:43:47,621 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:47,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:43:47,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:47,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:43:47,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:47,622 INFO L87 Difference]: Start difference. First operand 2206 states and 3192 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:49,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:43:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:43:49,817 INFO L93 Difference]: Finished difference Result 2208 states and 3193 transitions. [2021-11-16 22:43:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:43:49,817 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, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-16 22:43:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:43:49,831 INFO L225 Difference]: With dead ends: 2208 [2021-11-16 22:43:49,834 INFO L226 Difference]: Without dead ends: 2205 [2021-11-16 22:43:49,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:49,839 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 3175 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:43:49,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3175 Valid, 3189 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-16 22:43:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2021-11-16 22:43:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2205. [2021-11-16 22:43:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1532 states have (on average 1.3413838120104438) internal successors, (2055), 1573 states have internal predecessors, (2055), 569 states have call successors, (569), 104 states have call predecessors, (569), 103 states have return successors, (566), 561 states have call predecessors, (566), 566 states have call successors, (566) [2021-11-16 22:43:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3190 transitions. [2021-11-16 22:43:49,956 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3190 transitions. Word has length 18 [2021-11-16 22:43:49,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:43:49,956 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 3190 transitions. [2021-11-16 22:43:49,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3190 transitions. [2021-11-16 22:43:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-16 22:43:49,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:49,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:49,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-16 22:43:50,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:43:50,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash -798336052, now seen corresponding path program 1 times [2021-11-16 22:43:50,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:50,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910737920] [2021-11-16 22:43:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:50,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:50,177 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:50,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-16 22:43:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:50,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 22:43:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:51,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:51,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:51,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910737920] [2021-11-16 22:43:51,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910737920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:51,226 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:51,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-16 22:43:51,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779550595] [2021-11-16 22:43:51,227 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:51,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:43:51,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:43:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:51,228 INFO L87 Difference]: Start difference. First operand 2205 states and 3190 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:53,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:43:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:43:53,506 INFO L93 Difference]: Finished difference Result 4994 states and 7160 transitions. [2021-11-16 22:43:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:43:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-16 22:43:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:43:53,528 INFO L225 Difference]: With dead ends: 4994 [2021-11-16 22:43:53,529 INFO L226 Difference]: Without dead ends: 2791 [2021-11-16 22:43:53,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:53,546 INFO L933 BasicCegarLoop]: 3581 mSDtfsCounter, 1201 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:43:53,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 6307 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-16 22:43:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-11-16 22:43:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2788. [2021-11-16 22:43:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 1930 states have (on average 1.3233160621761657) internal successors, (2554), 1990 states have internal predecessors, (2554), 688 states have call successors, (688), 172 states have call predecessors, (688), 169 states have return successors, (693), 667 states have call predecessors, (693), 679 states have call successors, (693) [2021-11-16 22:43:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3935 transitions. [2021-11-16 22:43:53,733 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3935 transitions. Word has length 19 [2021-11-16 22:43:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:43:53,734 INFO L470 AbstractCegarLoop]: Abstraction has 2788 states and 3935 transitions. [2021-11-16 22:43:53,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-16 22:43:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3935 transitions. [2021-11-16 22:43:53,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-16 22:43:53,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:53,745 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:53,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-16 22:43:53,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:43:53,963 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:53,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -587069341, now seen corresponding path program 1 times [2021-11-16 22:43:53,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:53,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930092609] [2021-11-16 22:43:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:53,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:53,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:53,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-16 22:43:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:54,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 22:43:54,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-16 22:43:54,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:43:55,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930092609] [2021-11-16 22:43:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930092609] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:55,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:55,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-16 22:43:55,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857518332] [2021-11-16 22:43:55,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:55,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 22:43:55,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:55,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 22:43:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-16 22:43:55,370 INFO L87 Difference]: Start difference. First operand 2788 states and 3935 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-16 22:43:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:43:55,666 INFO L93 Difference]: Finished difference Result 5605 states and 7919 transitions. [2021-11-16 22:43:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-16 22:43:55,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 55 [2021-11-16 22:43:55,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:43:55,683 INFO L225 Difference]: With dead ends: 5605 [2021-11-16 22:43:55,684 INFO L226 Difference]: Without dead ends: 2828 [2021-11-16 22:43:55,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-16 22:43:55,697 INFO L933 BasicCegarLoop]: 3176 mSDtfsCounter, 58 mSDsluCounter, 6250 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 9426 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:43:55,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 9426 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 22:43:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-11-16 22:43:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2828. [2021-11-16 22:43:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.3236493374108054) internal successors, (2597), 2022 states have internal predecessors, (2597), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-16 22:43:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3994 transitions. [2021-11-16 22:43:55,884 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3994 transitions. Word has length 55 [2021-11-16 22:43:55,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:43:55,884 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3994 transitions. [2021-11-16 22:43:55,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-16 22:43:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3994 transitions. [2021-11-16 22:43:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-16 22:43:55,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:55,887 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:55,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-16 22:43:56,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:43:56,102 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1997599171, now seen corresponding path program 1 times [2021-11-16 22:43:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:56,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974864107] [2021-11-16 22:43:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:56,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:56,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:56,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:56,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-16 22:43:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:56,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-16 22:43:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:43:56,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:43:57,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:57,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974864107] [2021-11-16 22:43:57,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974864107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:57,126 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:57,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-16 22:43:57,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222640431] [2021-11-16 22:43:57,127 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:57,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:43:57,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:43:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:57,128 INFO L87 Difference]: Start difference. First operand 2828 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-16 22:43:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:43:57,315 INFO L93 Difference]: Finished difference Result 5647 states and 8045 transitions. [2021-11-16 22:43:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:43:57,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 59 [2021-11-16 22:43:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:43:57,334 INFO L225 Difference]: With dead ends: 5647 [2021-11-16 22:43:57,334 INFO L226 Difference]: Without dead ends: 2830 [2021-11-16 22:43:57,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:57,361 INFO L933 BasicCegarLoop]: 3167 mSDtfsCounter, 0 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:43:57,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 22:43:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2021-11-16 22:43:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2828. [2021-11-16 22:43:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 1962 states have (on average 1.32059123343527) internal successors, (2591), 2022 states have internal predecessors, (2591), 696 states have call successors, (696), 172 states have call predecessors, (696), 169 states have return successors, (701), 675 states have call predecessors, (701), 687 states have call successors, (701) [2021-11-16 22:43:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3988 transitions. [2021-11-16 22:43:57,521 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3988 transitions. Word has length 59 [2021-11-16 22:43:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:43:57,521 INFO L470 AbstractCegarLoop]: Abstraction has 2828 states and 3988 transitions. [2021-11-16 22:43:57,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-16 22:43:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3988 transitions. [2021-11-16 22:43:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-16 22:43:57,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:43:57,524 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:43:57,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-16 22:43:57,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:43:57,746 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:43:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:43:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1160460849, now seen corresponding path program 1 times [2021-11-16 22:43:57,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:43:57,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91399760] [2021-11-16 22:43:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:43:57,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:43:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:43:57,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:43:57,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-16 22:43:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:43:58,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-16 22:43:58,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:43:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:43:58,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:43:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:43:59,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:43:59,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91399760] [2021-11-16 22:43:59,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91399760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:43:59,151 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:43:59,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-16 22:43:59,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487145659] [2021-11-16 22:43:59,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:43:59,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-16 22:43:59,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:43:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-16 22:43:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:43:59,153 INFO L87 Difference]: Start difference. First operand 2828 states and 3988 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-16 22:44:01,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-16 22:44:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:44:01,362 INFO L93 Difference]: Finished difference Result 4642 states and 6495 transitions. [2021-11-16 22:44:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 22:44:01,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-11-16 22:44:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:44:01,378 INFO L225 Difference]: With dead ends: 4642 [2021-11-16 22:44:01,378 INFO L226 Difference]: Without dead ends: 2350 [2021-11-16 22:44:01,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 22:44:01,394 INFO L933 BasicCegarLoop]: 3066 mSDtfsCounter, 2146 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2146 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 22:44:01,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2146 Valid, 4068 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-16 22:44:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2021-11-16 22:44:01,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2021-11-16 22:44:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 1637 states have (on average 1.3091020158827122) internal successors, (2143), 1682 states have internal predecessors, (2143), 555 states have call successors, (555), 161 states have call predecessors, (555), 157 states have return successors, (542), 535 states have call predecessors, (542), 542 states have call successors, (542) [2021-11-16 22:44:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3240 transitions. [2021-11-16 22:44:01,531 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3240 transitions. Word has length 65 [2021-11-16 22:44:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:44:01,532 INFO L470 AbstractCegarLoop]: Abstraction has 2350 states and 3240 transitions. [2021-11-16 22:44:01,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-16 22:44:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3240 transitions. [2021-11-16 22:44:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-16 22:44:01,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:44:01,537 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:44:01,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-16 22:44:01,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:44:01,760 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:44:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:44:01,761 INFO L85 PathProgramCache]: Analyzing trace with hash 904423170, now seen corresponding path program 1 times [2021-11-16 22:44:01,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:44:01,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464835005] [2021-11-16 22:44:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:44:01,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:44:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:44:01,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:44:01,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-16 22:44:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 22:44:02,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 22:44:02,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 22:44:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:44:02,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 22:44:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-16 22:44:03,494 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-16 22:44:03,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464835005] [2021-11-16 22:44:03,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464835005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-16 22:44:03,494 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-16 22:44:03,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-16 22:44:03,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784238205] [2021-11-16 22:44:03,495 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-16 22:44:03,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 22:44:03,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-16 22:44:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 22:44:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-16 22:44:03,496 INFO L87 Difference]: Start difference. First operand 2350 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-16 22:44:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 22:44:03,893 INFO L93 Difference]: Finished difference Result 2382 states and 3290 transitions. [2021-11-16 22:44:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 22:44:03,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-11-16 22:44:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 22:44:03,908 INFO L225 Difference]: With dead ends: 2382 [2021-11-16 22:44:03,908 INFO L226 Difference]: Without dead ends: 2372 [2021-11-16 22:44:03,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-16 22:44:03,911 INFO L933 BasicCegarLoop]: 2567 mSDtfsCounter, 37 mSDsluCounter, 12819 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 15386 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 22:44:03,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 15386 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 22:44:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-16 22:44:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2355. [2021-11-16 22:44:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1641 states have (on average 1.3083485679463742) internal successors, (2147), 1686 states have internal predecessors, (2147), 555 states have call successors, (555), 161 states have call predecessors, (555), 158 states have return successors, (545), 536 states have call predecessors, (545), 542 states have call successors, (545) [2021-11-16 22:44:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3247 transitions. [2021-11-16 22:44:04,052 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3247 transitions. Word has length 65 [2021-11-16 22:44:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 22:44:04,056 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3247 transitions. [2021-11-16 22:44:04,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-16 22:44:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3247 transitions. [2021-11-16 22:44:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-16 22:44:04,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 22:44:04,058 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:44:04,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-16 22:44:04,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:44:04,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 22:44:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 22:44:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1585041309, now seen corresponding path program 1 times [2021-11-16 22:44:04,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-16 22:44:04,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866089297] [2021-11-16 22:44:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 22:44:04,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-16 22:44:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-16 22:44:04,275 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-16 22:44:04,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-16 22:44:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 22:44:07,899 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-16 22:44:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-16 22:44:11,650 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-16 22:44:11,650 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-16 22:44:11,651 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-16 22:44:11,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-16 22:44:11,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-16 22:44:11,856 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 22:44:11,858 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-16 22:44:11,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:44:11 BoogieIcfgContainer [2021-11-16 22:44:11,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-16 22:44:11,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-16 22:44:11,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-16 22:44:11,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-16 22:44:11,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:43:39" (3/4) ... [2021-11-16 22:44:11,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-16 22:44:11,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-16 22:44:11,978 INFO L158 Benchmark]: Toolchain (without parser) took 70322.03ms. Allocated memory was 52.4MB in the beginning and 455.1MB in the end (delta: 402.7MB). Free memory was 24.7MB in the beginning and 232.1MB in the end (delta: -207.3MB). Peak memory consumption was 194.7MB. Max. memory is 16.1GB. [2021-11-16 22:44:11,978 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 22:44:11,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2722.97ms. Allocated memory was 52.4MB in the beginning and 140.5MB in the end (delta: 88.1MB). Free memory was 24.5MB in the beginning and 69.8MB in the end (delta: -45.3MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2021-11-16 22:44:11,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 277.66ms. Allocated memory was 140.5MB in the beginning and 260.0MB in the end (delta: 119.5MB). Free memory was 69.8MB in the beginning and 183.4MB in the end (delta: -113.6MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. [2021-11-16 22:44:11,980 INFO L158 Benchmark]: Boogie Preprocessor took 210.66ms. Allocated memory is still 260.0MB. Free memory was 183.4MB in the beginning and 146.7MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-11-16 22:44:11,980 INFO L158 Benchmark]: RCFGBuilder took 34225.44ms. Allocated memory was 260.0MB in the beginning and 455.1MB in the end (delta: 195.0MB). Free memory was 146.7MB in the beginning and 269.4MB in the end (delta: -122.7MB). Peak memory consumption was 183.8MB. Max. memory is 16.1GB. [2021-11-16 22:44:11,981 INFO L158 Benchmark]: TraceAbstraction took 32875.43ms. Allocated memory is still 455.1MB. Free memory was 268.3MB in the beginning and 232.1MB in the end (delta: 36.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2021-11-16 22:44:11,981 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 455.1MB. Free memory is still 232.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 22:44:11,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory was 33.8MB in the beginning and 33.7MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2722.97ms. Allocated memory was 52.4MB in the beginning and 140.5MB in the end (delta: 88.1MB). Free memory was 24.5MB in the beginning and 69.8MB in the end (delta: -45.3MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 277.66ms. Allocated memory was 140.5MB in the beginning and 260.0MB in the end (delta: 119.5MB). Free memory was 69.8MB in the beginning and 183.4MB in the end (delta: -113.6MB). Peak memory consumption was 33.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 210.66ms. Allocated memory is still 260.0MB. Free memory was 183.4MB in the beginning and 146.7MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * RCFGBuilder took 34225.44ms. Allocated memory was 260.0MB in the beginning and 455.1MB in the end (delta: 195.0MB). Free memory was 146.7MB in the beginning and 269.4MB in the end (delta: -122.7MB). Peak memory consumption was 183.8MB. Max. memory is 16.1GB. * TraceAbstraction took 32875.43ms. Allocated memory is still 455.1MB. Free memory was 268.3MB in the beginning and 232.1MB in the end (delta: 36.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * Witness Printer took 3.37ms. Allocated memory is still 455.1MB. Free memory is still 232.1MB. 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={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=0, ldv_mutex_cred_guard_mutex=0, ldv_mutex_lock=0, ldv_mutex_mtx=0, ldv_mutex_mutex=0, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10623] struct inode *var_group1 ; [L10624] struct file *var_group2 ; [L10625] unsigned int var_vhost_net_ioctl_27_p1 ; [L10626] unsigned long var_vhost_net_ioctl_27_p2 ; [L10627] unsigned int var_vhost_net_compat_ioctl_28_p1 ; [L10628] unsigned long var_vhost_net_compat_ioctl_28_p2 ; [L10629] int res_vhost_net_open_13 ; [L10630] int ldv_s_vhost_net_fops_file_operations ; [L10631] int tmp ; [L10632] int tmp___0 ; [L10633] int tmp___1 ; [L10635] ldv_s_vhost_net_fops_file_operations = 0 [L10636] LDV_IN_INTERRUPT = 1 [L10637] CALL ldv_initialize() [L11433] ldv_mutex_cred_guard_mutex = 1 [L11434] ldv_mutex_lock = 1 [L11435] ldv_mutex_mtx = 1 [L11436] ldv_mutex_mutex = 1 VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10637] RET ldv_initialize() [L10638] FCALL ldv_handler_precall() VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10639] CALL, EXPR vhost_net_init() [L10598] int tmp ; VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10600] COND FALSE !(experimental_zcopytx != 0) VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10604] CALL, EXPR misc_register(& vhost_net_misc) [L11595] return __VERIFIER_nondet_int(); [L10604] RET, EXPR misc_register(& vhost_net_misc) [L10604] tmp = misc_register(& vhost_net_misc) [L10605] return (tmp); VAL [\result=0, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, tmp=0, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10639] RET, EXPR vhost_net_init() [L10639] tmp = vhost_net_init() [L10640] COND FALSE !(tmp != 0) VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10682] tmp___1 = __VERIFIER_nondet_int() [L10683] COND TRUE tmp___1 != 0 || ldv_s_vhost_net_fops_file_operations != 0 VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___1=2147483648, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10646] tmp___0 = __VERIFIER_nondet_int() [L10648] case 0: [L10661] case 1: [L10669] case 2: [L10673] case 3: VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=2147483648, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10674] FCALL ldv_handler_precall() VAL [__this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, ldv_s_vhost_net_fops_file_operations=0, tmp=0, tmp___0=3, tmp___1=2147483648, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10675] CALL vhost_net_compat_ioctl(var_group2, var_vhost_net_compat_ioctl_28_p1, var_vhost_net_compat_ioctl_28_p2) [L10582] void *tmp ; [L10583] long tmp___0 ; [L10585] CALL, EXPR compat_ptr((compat_uptr_t )arg) [L9300] return ((void *)((unsigned long )uptr)); VAL [\old(uptr)=131072, \result={0:131072}, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, uptr=131072, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10585] RET, EXPR compat_ptr((compat_uptr_t )arg) [L10585] tmp = compat_ptr((compat_uptr_t )arg) [L10586] CALL vhost_net_ioctl(f, ioctl, (unsigned long )tmp) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10521] struct vhost_net *n ; [L10522] void *argp ; [L10523] u64 *featurep ; [L10524] struct vhost_vring_file backend ; [L10525] u64 features ; [L10526] int r ; [L10527] unsigned long tmp ; [L10528] long tmp___0 ; [L10529] int tmp___1 ; [L10530] unsigned long tmp___2 ; [L10531] int tmp___3 ; [L10532] long tmp___4 ; [L10533] long tmp___5 ; [L10535] EXPR f->private_data [L10535] n = (struct vhost_net *)f->private_data [L10536] argp = (void *)arg [L10537] featurep = (u64 *)argp [L10539] case 1074310960U: [L10547] case 2148052736U: [L10555] case 1074310912U: [L10567] case 44802U: [L10568] CALL vhost_net_reset_owner(n) [L10445] struct socket *tx_sock ; [L10446] struct socket *rx_sock ; [L10447] long err ; [L10449] tx_sock = 0 [L10450] rx_sock = 0 [L10451] CALL ldv_mutex_lock_66(& n->dev.mutex) [L10919] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={140737505132544:67108880}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L11361] COND TRUE ldv_mutex_mutex == 1 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=1, lock={140737505132544:67108880}, lock={140737505132544:67108880}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L11365] ldv_mutex_mutex = 2 VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={140737505132544:67108880}, lock={140737505132544:67108880}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10919] RET ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={140737505132544:67108880}, ldv_func_arg1={140737505132544:67108880}, 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={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10920] FCALL mutex_lock(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, ldv_func_arg1={140737505132544:67108880}, ldv_func_arg1={140737505132544:67108880}, 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={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10451] RET ldv_mutex_lock_66(& n->dev.mutex) [L10452] CALL, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={140737505132544:67108864}, 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={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L6410] struct task_struct *tmp ; VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={140737505132544:67108864}, dev={140737505132544:67108864}, 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={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L6412] CALL, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L5283] struct task_struct *pfo_ret__ ; [L5286] case 1UL: [L5289] case 2UL: [L5292] case 4UL: [L5295] case 8UL: VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L5302] return (pfo_ret__); VAL [\old(ldv_mutex_mutex)=1, \result={0:0}, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, pfo_ret__={0:0}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L6412] RET, EXPR get_current() VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={140737505132544:67108864}, dev={140737505132544:67108864}, experimental_zcopytx=0, get_current()={0:0}, 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={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L6412] tmp = get_current() [L6413] EXPR dev->mm [L6413] EXPR tmp->mm VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={140737505132544:67108864}, dev={140737505132544:67108864}, dev->mm={4503599627370496:-4503318306488320}, 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={0:0}, tmp->mm={1073741824:280247140352}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L6413] EXPR (unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L VAL [(unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L=0, \old(ldv_mutex_mutex)=1, __this_module={0:0}, dev={140737505132544:67108864}, dev={140737505132544:67108864}, dev->mm={4503599627370496:-4503318306488320}, 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={0:0}, tmp->mm={1073741824:280247140352}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L6413] return ((unsigned long )dev->mm == (unsigned long )tmp->mm ? 0L : -1L); [L10452] RET, EXPR vhost_dev_check_owner(& n->dev) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={140737505132544:67108864}, n={140737505132544:67108864}, rx_sock={-9205357638345293773:0}, tx_sock={215:0}, vhost_dev_check_owner(& n->dev)=0, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10452] err = vhost_dev_check_owner(& n->dev) [L10453] COND FALSE !(err != 0L) VAL [\old(ldv_mutex_mutex)=1, __this_module={0:0}, err=0, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={140737505132544:67108864}, n={140737505132544:67108864}, rx_sock={-9205357638345293773:0}, tx_sock={215:0}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10457] CALL vhost_net_stop(n, & tx_sock, & rx_sock) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={140737505132544:67108864}, rx_sock={-9205357638345293773:0}, tx_sock={215:0}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10183] CALL vhost_net_stop_vq(n, (struct vhost_virtqueue *)(& n->vqs) + 1UL) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, n={140737505132544:67108864}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0, vq={140737505132544:67126280}] [L10155] struct socket *sock ; [L10156] bool __warned ; [L10157] int tmp ; [L10158] int tmp___0 ; [L10160] CALL ldv_mutex_lock_56(& vq->mutex) [L10839] CALL ldv_mutex_lock_mutex(ldv_func_arg1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={140737505132544:67126288}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L11361] COND FALSE !(ldv_mutex_mutex == 1) VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, lock={140737505132544:67126288}, lock={140737505132544:67126288}, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L11363] CALL ldv_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] [L10992] reach_error() VAL [\old(ldv_mutex_mutex)=2, __this_module={0:0}, experimental_zcopytx=0, LDV_IN_INTERRUPT=1, ldv_mutex_cred_guard_mutex=1, ldv_mutex_lock=1, ldv_mutex_mtx=1, ldv_mutex_mutex=2, vhost_net_fops={247:0}, vhost_net_misc={-9223372036854775793:0}, vhost_zcopy_mask=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 105 procedures, 2218 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.7s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 13015 SdHoareTripleChecker+Valid, 10.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12988 mSDsluCounter, 51099 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25957 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 25142 mSDtfsCounter, 77 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 612 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2828occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 999 SizeOfPredicates, 1 NumberOfNonLiveVariables, 5006 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 20/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-16 22:44:12,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample