./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.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 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 17:21:59,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 17:21:59,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 17:21:59,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 17:21:59,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 17:21:59,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 17:21:59,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 17:21:59,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 17:21:59,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 17:21:59,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 17:21:59,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 17:21:59,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 17:21:59,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 17:21:59,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 17:21:59,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 17:21:59,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 17:21:59,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 17:21:59,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 17:21:59,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 17:21:59,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 17:21:59,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 17:21:59,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 17:21:59,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 17:21:59,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 17:21:59,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 17:21:59,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 17:21:59,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 17:21:59,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 17:21:59,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 17:21:59,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 17:21:59,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 17:21:59,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 17:21:59,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 17:21:59,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 17:21:59,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 17:21:59,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 17:21:59,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 17:21:59,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 17:21:59,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 17:21:59,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 17:21:59,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 17:21:59,559 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 17:21:59,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 17:21:59,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 17:21:59,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 17:21:59,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 17:21:59,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 17:21:59,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 17:21:59,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 17:21:59,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 17:21:59,593 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 17:21:59,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 17:21:59,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 17:21:59,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 17:21:59,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 17:21:59,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 17:21:59,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 17:21:59,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:21:59,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 17:21:59,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 17:21:59,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 17:21:59,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2021-12-21 17:21:59,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 17:21:59,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 17:21:59,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 17:21:59,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 17:21:59,798 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 17:21:59,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-12-21 17:21:59,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8cf995b9/c28e037270244818a250a08d6e28b1e3/FLAG746a13359 [2021-12-21 17:22:00,434 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 17:22:00,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-12-21 17:22:00,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8cf995b9/c28e037270244818a250a08d6e28b1e3/FLAG746a13359 [2021-12-21 17:22:00,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8cf995b9/c28e037270244818a250a08d6e28b1e3 [2021-12-21 17:22:00,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 17:22:00,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 17:22:00,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 17:22:00,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 17:22:00,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 17:22:00,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:22:00" (1/1) ... [2021-12-21 17:22:00,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4916a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:00, skipping insertion in model container [2021-12-21 17:22:00,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 05:22:00" (1/1) ... [2021-12-21 17:22:00,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 17:22:00,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 17:22:02,005 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2021-12-21 17:22:02,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:22:02,064 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 17:22:02,309 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-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2021-12-21 17:22:02,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 17:22:02,397 INFO L208 MainTranslator]: Completed translation [2021-12-21 17:22:02,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02 WrapperNode [2021-12-21 17:22:02,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 17:22:02,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 17:22:02,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 17:22:02,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 17:22:02,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,581 INFO L137 Inliner]: procedures = 306, calls = 1441, calls flagged for inlining = 179, calls inlined = 169, statements flattened = 3989 [2021-12-21 17:22:02,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 17:22:02,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 17:22:02,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 17:22:02,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 17:22:02,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 17:22:02,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 17:22:02,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 17:22:02,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 17:22:02,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (1/1) ... [2021-12-21 17:22:02,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 17:22:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 17:22:02,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 17:22:02,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 17:22:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 17:22:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 17:22:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 17:22:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 17:22:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 17:22:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 17:22:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-21 17:22:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-21 17:22:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-12-21 17:22:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-12-21 17:22:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 17:22:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 17:22:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2021-12-21 17:22:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2021-12-21 17:22:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-21 17:22:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-21 17:22:02,884 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2021-12-21 17:22:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2021-12-21 17:22:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 17:22:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 17:22:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2021-12-21 17:22:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2021-12-21 17:22:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-12-21 17:22:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-12-21 17:22:02,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-12-21 17:22:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-12-21 17:22:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2021-12-21 17:22:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2021-12-21 17:22:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 17:22:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 17:22:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 17:22:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 17:22:02,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-21 17:22:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-21 17:22:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2021-12-21 17:22:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2021-12-21 17:22:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2021-12-21 17:22:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2021-12-21 17:22:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 17:22:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 17:22:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2021-12-21 17:22:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2021-12-21 17:22:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-12-21 17:22:02,888 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-12-21 17:22:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 17:22:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 17:22:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-12-21 17:22:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-12-21 17:22:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-12-21 17:22:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-12-21 17:22:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 17:22:02,889 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 17:22:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-21 17:22:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-21 17:22:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-21 17:22:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-21 17:22:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-12-21 17:22:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-12-21 17:22:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-21 17:22:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-21 17:22:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-21 17:22:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-21 17:22:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-21 17:22:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-21 17:22:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-21 17:22:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-21 17:22:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-21 17:22:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-21 17:22:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 17:22:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2021-12-21 17:22:02,893 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2021-12-21 17:22:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-21 17:22:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-21 17:22:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2021-12-21 17:22:02,894 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2021-12-21 17:22:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 17:22:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-21 17:22:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-21 17:22:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2021-12-21 17:22:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2021-12-21 17:22:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2021-12-21 17:22:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2021-12-21 17:22:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-21 17:22:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-21 17:22:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 17:22:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2021-12-21 17:22:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2021-12-21 17:22:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-12-21 17:22:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-12-21 17:22:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 17:22:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 17:22:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-12-21 17:22:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-12-21 17:22:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-21 17:22:02,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-21 17:22:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2021-12-21 17:22:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2021-12-21 17:22:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2021-12-21 17:22:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2021-12-21 17:22:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 17:22:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2021-12-21 17:22:02,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2021-12-21 17:22:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2021-12-21 17:22:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2021-12-21 17:22:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 17:22:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 17:22:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2021-12-21 17:22:02,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2021-12-21 17:22:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 17:22:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-21 17:22:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-21 17:22:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-21 17:22:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-21 17:22:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-12-21 17:22:02,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-12-21 17:22:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-12-21 17:22:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-12-21 17:22:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2021-12-21 17:22:02,901 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2021-12-21 17:22:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 17:22:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 17:22:02,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 17:22:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-21 17:22:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-21 17:22:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 17:22:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-12-21 17:22:02,905 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-12-21 17:22:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:22:02,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-21 17:22:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 17:22:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 17:22:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-12-21 17:22:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-12-21 17:22:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-21 17:22:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-21 17:22:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2021-12-21 17:22:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2021-12-21 17:22:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-21 17:22:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-21 17:22:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-12-21 17:22:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-12-21 17:22:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-21 17:22:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-21 17:22:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 17:22:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 17:22:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2021-12-21 17:22:02,911 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2021-12-21 17:22:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2021-12-21 17:22:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2021-12-21 17:22:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 17:22:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-12-21 17:22:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-12-21 17:22:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2021-12-21 17:22:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2021-12-21 17:22:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-21 17:22:02,912 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-21 17:22:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-21 17:22:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-21 17:22:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 17:22:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 17:22:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 17:22:02,913 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 17:22:03,502 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 17:22:03,505 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 17:22:03,806 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 17:22:40,827 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-21 17:22:41,698 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 17:22:41,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 17:22:41,709 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 17:22:41,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:22:41 BoogieIcfgContainer [2021-12-21 17:22:41,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 17:22:41,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 17:22:41,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 17:22:41,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 17:22:41,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 05:22:00" (1/3) ... [2021-12-21 17:22:41,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49190042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:22:41, skipping insertion in model container [2021-12-21 17:22:41,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 05:22:02" (2/3) ... [2021-12-21 17:22:41,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49190042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 05:22:41, skipping insertion in model container [2021-12-21 17:22:41,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 05:22:41" (3/3) ... [2021-12-21 17:22:41,718 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-12-21 17:22:41,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 17:22:41,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 17:22:41,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 17:22:41,780 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 17:22:41,780 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 17:22:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 1435 states, 1010 states have (on average 1.2861386138613862) internal successors, (1299), 1030 states have internal predecessors, (1299), 352 states have call successors, (352), 73 states have call predecessors, (352), 72 states have return successors, (343), 336 states have call predecessors, (343), 343 states have call successors, (343) [2021-12-21 17:22:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-21 17:22:41,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:22:41,830 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:22:41,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:22:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:22:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -623763730, now seen corresponding path program 1 times [2021-12-21 17:22:41,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:22:41,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832833917] [2021-12-21 17:22:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:22:41,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:22:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:22:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:22:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:22:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:22:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:22:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:22:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:22:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:22:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:22:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:22:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:22:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 17:22:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 17:22:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-21 17:22:42,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:22:42,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832833917] [2021-12-21 17:22:42,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832833917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:22:42,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:22:42,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:22:42,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551038571] [2021-12-21 17:22:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:22:42,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:22:42,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:22:42,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:22:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:22:42,939 INFO L87 Difference]: Start difference. First operand has 1435 states, 1010 states have (on average 1.2861386138613862) internal successors, (1299), 1030 states have internal predecessors, (1299), 352 states have call successors, (352), 73 states have call predecessors, (352), 72 states have return successors, (343), 336 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:22:45,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:22:47,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:22:53,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:22:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 17:22:55,721 INFO L93 Difference]: Finished difference Result 4210 states and 5985 transitions. [2021-12-21 17:22:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 17:22:55,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 151 [2021-12-21 17:22:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 17:22:55,758 INFO L225 Difference]: With dead ends: 4210 [2021-12-21 17:22:55,759 INFO L226 Difference]: Without dead ends: 2789 [2021-12-21 17:22:55,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 17:22:55,774 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 2275 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 888 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-12-21 17:22:55,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2521 Valid, 4779 Invalid, 1902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [888 Valid, 1012 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2021-12-21 17:22:55,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-12-21 17:22:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2727. [2021-12-21 17:22:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 1935 states have (on average 1.2821705426356589) internal successors, (2481), 1976 states have internal predecessors, (2481), 651 states have call successors, (651), 141 states have call predecessors, (651), 140 states have return successors, (647), 633 states have call predecessors, (647), 647 states have call successors, (647) [2021-12-21 17:22:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3779 transitions. [2021-12-21 17:22:55,978 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3779 transitions. Word has length 151 [2021-12-21 17:22:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 17:22:55,981 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3779 transitions. [2021-12-21 17:22:55,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 17:22:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3779 transitions. [2021-12-21 17:22:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-21 17:22:55,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 17:22:55,996 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 17:22:55,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 17:22:55,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 17:22:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 17:22:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 39311551, now seen corresponding path program 1 times [2021-12-21 17:22:55,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 17:22:55,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515169339] [2021-12-21 17:22:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 17:22:56,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 17:22:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 17:22:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 17:22:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 17:22:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 17:22:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 17:22:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 17:22:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 17:22:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 17:22:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 17:22:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 17:22:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 17:22:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 17:22:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 17:22:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 17:22:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 17:22:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 17:22:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 17:22:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 17:22:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-21 17:22:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-21 17:22:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 17:22:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2021-12-21 17:22:56,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 17:22:56,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515169339] [2021-12-21 17:22:56,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515169339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 17:22:56,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 17:22:56,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 17:22:56,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097236043] [2021-12-21 17:22:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 17:22:56,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 17:22:56,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 17:22:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 17:22:56,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 17:22:56,572 INFO L87 Difference]: Start difference. First operand 2727 states and 3779 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-21 17:22:58,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:23:00,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 17:23:04,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []