./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 e19ca921 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-e19ca92 [2021-12-22 15:48:30,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:48:30,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:48:30,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:48:30,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:48:30,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:48:30,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:48:30,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:48:30,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:48:30,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:48:30,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:48:30,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:48:30,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:48:30,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:48:30,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:48:30,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:48:30,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:48:30,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:48:30,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:48:30,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:48:30,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:48:30,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:48:30,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:48:30,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:48:30,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:48:30,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:48:30,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:48:30,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:48:30,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:48:30,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:48:30,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:48:30,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:48:30,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:48:30,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:48:30,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:48:30,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:48:30,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:48:30,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:48:30,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:48:30,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:48:30,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:48:30,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:48:30,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:48:30,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:48:30,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:48:30,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:48:30,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:48:30,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:48:30,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:48:30,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:48:30,108 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:48:30,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:48:30,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:48:30,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:48:30,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:48:30,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:48:30,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:48:30,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:48:30,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:48:30,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:48:30,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:48:30,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:48:30,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:48:30,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:48:30,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:48:30,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:48:30,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:48:30,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:48:30,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:48:30,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:48:30,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:48:30,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:48:30,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:48:30,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2021-12-22 15:48:30,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:48:30,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:48:30,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:48:30,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:48:30,317 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:48:30,318 INFO L432 ainManager$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 [2021-12-22 15:48:30,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c40db71/413a582a280e420ea8bac3c9bd27c80a/FLAG987026e50 [2021-12-22 15:48:31,024 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:48:31,025 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 [2021-12-22 15:48:31,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c40db71/413a582a280e420ea8bac3c9bd27c80a/FLAG987026e50 [2021-12-22 15:48:31,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c40db71/413a582a280e420ea8bac3c9bd27c80a [2021-12-22 15:48:31,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:48:31,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:48:31,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:48:31,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:48:31,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:48:31,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:48:31" (1/1) ... [2021-12-22 15:48:31,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd89879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:31, skipping insertion in model container [2021-12-22 15:48:31,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:48:31" (1/1) ... [2021-12-22 15:48:31,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:48:31,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:48:32,936 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] [2021-12-22 15:48:32,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:48:32,999 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:48:33,236 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] [2021-12-22 15:48:33,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:48:33,325 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:48:33,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33 WrapperNode [2021-12-22 15:48:33,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:48:33,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:48:33,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:48:33,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:48:33,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,512 INFO L137 Inliner]: procedures = 306, calls = 1441, calls flagged for inlining = 179, calls inlined = 169, statements flattened = 3989 [2021-12-22 15:48:33,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:48:33,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:48:33,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:48:33,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:48:33,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:48:33,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:48:33,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:48:33,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:48:33,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (1/1) ... [2021-12-22 15:48:33,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:48:33,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:48:33,733 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) [2021-12-22 15:48:33,751 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 [2021-12-22 15:48:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 15:48:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 15:48:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:48:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:48:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:48:33,764 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:48:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-22 15:48:33,764 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-22 15:48:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-12-22 15:48:33,764 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-12-22 15:48:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:48:33,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:48:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open_clean [2021-12-22 15:48:33,765 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open_clean [2021-12-22 15:48:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-22 15:48:33,765 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-22 15:48:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure devm_regulator_get [2021-12-22 15:48:33,765 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_regulator_get [2021-12-22 15:48:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 15:48:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 15:48:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_spi_trans [2021-12-22 15:48:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_spi_trans [2021-12-22 15:48:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-12-22 15:48:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_mcp251x_can_driver_exit_12_2 [2021-12-22 15:48:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-12-22 15:48:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-12-22 15:48:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_read_reg [2021-12-22 15:48:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_read_reg [2021-12-22 15:48:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:48:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-22 15:48:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-22 15:48:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:48:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-22 15:48:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-12-22 15:48:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_stop [2021-12-22 15:48:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_stop [2021-12-22 15:48:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_bits [2021-12-22 15:48:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_bits [2021-12-22 15:48:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-22 15:48:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-22 15:48:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx_ni [2021-12-22 15:48:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx_ni [2021-12-22 15:48:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2021-12-22 15:48:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2021-12-22 15:48:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:48:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:48:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-12-22 15:48:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-12-22 15:48:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-12-22 15:48:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-12-22 15:48:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 15:48:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 15:48:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-22 15:48:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-22 15:48:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-22 15:48:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-22 15:48:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2021-12-22 15:48:33,771 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2021-12-22 15:48:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-12-22 15:48:33,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-12-22 15:48:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-22 15:48:33,772 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-22 15:48:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2021-12-22 15:48:33,772 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2021-12-22 15:48:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-12-22 15:48:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-12-22 15:48:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-22 15:48:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-22 15:48:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 15:48:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_set_normal_mode [2021-12-22 15:48:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_set_normal_mode [2021-12-22 15:48:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-22 15:48:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-22 15:48:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_remove [2021-12-22 15:48:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_remove [2021-12-22 15:48:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 15:48:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-12-22 15:48:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-12-22 15:48:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_error_skb [2021-12-22 15:48:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_error_skb [2021-12-22 15:48:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_sleep [2021-12-22 15:48:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_sleep [2021-12-22 15:48:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-22 15:48:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-22 15:48:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:48:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_clean [2021-12-22 15:48:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_clean [2021-12-22 15:48:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_disable [2021-12-22 15:48:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_disable [2021-12-22 15:48:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 15:48:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 15:48:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-12-22 15:48:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-12-22 15:48:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-12-22 15:48:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-12-22 15:48:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_power_enable [2021-12-22 15:48:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_power_enable [2021-12-22 15:48:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_suspend [2021-12-22 15:48:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_suspend [2021-12-22 15:48:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:48:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_open [2021-12-22 15:48:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_open [2021-12-22 15:48:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_probe [2021-12-22 15:48:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_probe [2021-12-22 15:48:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:48:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:48:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_can_resume [2021-12-22 15:48:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_can_resume [2021-12-22 15:48:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:48:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-12-22 15:48:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-12-22 15:48:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-12-22 15:48:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-12-22 15:48:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-12-22 15:48:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-12-22 15:48:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-12-22 15:48:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-12-22 15:48:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_reset [2021-12-22 15:48:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_reset [2021-12-22 15:48:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:48:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-22 15:48:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-22 15:48:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-22 15:48:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-22 15:48:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:48:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-12-22 15:48:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-12-22 15:48:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 15:48:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 15:48:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 15:48:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 15:48:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2021-12-22 15:48:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2021-12-22 15:48:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-22 15:48:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-22 15:48:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_setup [2021-12-22 15:48:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_setup [2021-12-22 15:48:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-12-22 15:48:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-12-22 15:48:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-12-22 15:48:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-12-22 15:48:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-22 15:48:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-22 15:48:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 15:48:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 15:48:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_hw_rx [2021-12-22 15:48:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_hw_rx [2021-12-22 15:48:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_is_2510 [2021-12-22 15:48:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_is_2510 [2021-12-22 15:48:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:48:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-12-22 15:48:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-12-22 15:48:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure mcp251x_write_reg [2021-12-22 15:48:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mcp251x_write_reg [2021-12-22 15:48:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-22 15:48:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-22 15:48:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-22 15:48:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-22 15:48:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:48:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:48:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 15:48:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 15:48:34,333 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:48:34,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:48:34,671 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:49:11,103 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-12-22 15:49:12,572 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:49:12,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:49:12,583 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 15:49:12,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:49:12 BoogieIcfgContainer [2021-12-22 15:49:12,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:49:12,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:49:12,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:49:12,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:49:12,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:48:31" (1/3) ... [2021-12-22 15:49:12,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7713d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:49:12, skipping insertion in model container [2021-12-22 15:49:12,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:48:33" (2/3) ... [2021-12-22 15:49:12,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7713d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:49:12, skipping insertion in model container [2021-12-22 15:49:12,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:49:12" (3/3) ... [2021-12-22 15:49:12,591 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-12-22 15:49:12,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:49:12,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:49:12,640 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:49:12,644 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 [2021-12-22 15:49:12,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:49:12,681 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) [2021-12-22 15:49:12,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 15:49:12,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:49:12,694 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] [2021-12-22 15:49:12,694 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] === [2021-12-22 15:49:12,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:49:12,698 INFO L85 PathProgramCache]: Analyzing trace with hash -623763730, now seen corresponding path program 1 times [2021-12-22 15:49:12,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:49:12,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961878386] [2021-12-22 15:49:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:49:12,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:49:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 15:49:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 15:49:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 15:49:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 15:49:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 15:49:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 15:49:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 15:49:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 15:49:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 15:49:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 15:49:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 15:49:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 15:49:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 15:49:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2021-12-22 15:49:13,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:49:13,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961878386] [2021-12-22 15:49:13,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961878386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:49:13,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:49:13,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 15:49:13,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119973737] [2021-12-22 15:49:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:49:13,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 15:49:13,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:49:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 15:49:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 15:49:13,878 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) [2021-12-22 15:49:15,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:49:18,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:49:20,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:49:21,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:49:27,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:49:27,336 INFO L93 Difference]: Finished difference Result 4210 states and 5985 transitions. [2021-12-22 15:49:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 15:49:27,339 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 [2021-12-22 15:49:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:49:27,376 INFO L225 Difference]: With dead ends: 4210 [2021-12-22 15:49:27,376 INFO L226 Difference]: Without dead ends: 2789 [2021-12-22 15:49:27,390 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 [2021-12-22 15:49:27,392 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 2275 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 888 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s 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, 13.0s IncrementalHoareTripleChecker+Time [2021-12-22 15:49:27,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2521 Valid, 4779 Invalid, 1902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [888 Valid, 1012 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2021-12-22 15:49:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-12-22 15:49:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2727. [2021-12-22 15:49:27,565 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) [2021-12-22 15:49:27,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 3779 transitions. [2021-12-22 15:49:27,584 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 3779 transitions. Word has length 151 [2021-12-22 15:49:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:49:27,588 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 3779 transitions. [2021-12-22 15:49:27,588 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) [2021-12-22 15:49:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 3779 transitions. [2021-12-22 15:49:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-22 15:49:27,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:49:27,604 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] [2021-12-22 15:49:27,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:49:27,606 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] === [2021-12-22 15:49:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:49:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash 39311551, now seen corresponding path program 1 times [2021-12-22 15:49:27,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:49:27,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756894625] [2021-12-22 15:49:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:49:27,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:49:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 15:49:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 15:49:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 15:49:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 15:49:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 15:49:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 15:49:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 15:49:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 15:49:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 15:49:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 15:49:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 15:49:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 15:49:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 15:49:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 15:49:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 15:49:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-22 15:49:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:49:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-22 15:49:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-22 15:49:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-22 15:49:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:49:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2021-12-22 15:49:28,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:49:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756894625] [2021-12-22 15:49:28,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756894625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:49:28,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:49:28,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 15:49:28,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822427811] [2021-12-22 15:49:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:49:28,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 15:49:28,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:49:28,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 15:49:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 15:49:28,225 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) [2021-12-22 15:49:30,266 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 [] [2021-12-22 15:49:32,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 15:49:35,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []