./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.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 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:33:09,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:33:09,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:33:09,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:33:09,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:33:09,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:33:09,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:33:09,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:33:09,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:33:09,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:33:09,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:33:09,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:33:09,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:33:09,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:33:09,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:33:09,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:33:09,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:33:09,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:33:09,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:33:09,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:33:09,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:33:09,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:33:09,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:33:09,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:33:09,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:33:09,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:33:09,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:33:09,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:33:09,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:33:09,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:33:09,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:33:09,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:33:09,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:33:09,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:33:09,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:33:09,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:33:09,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:33:09,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:33:09,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:33:09,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:33:09,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:33:09,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:33:09,391 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:33:09,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:33:09,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:33:09,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:33:09,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:33:09,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:33:09,400 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:33:09,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:33:09,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:33:09,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:33:09,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:33:09,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:33:09,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:33:09,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:33:09,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2021-11-04 07:33:09,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:33:09,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:33:09,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:33:09,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:33:09,654 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:33:09,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-11-04 07:33:09,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e33e2c92/0c208f255cae476590815ad395c59705/FLAGab3912866 [2021-11-04 07:33:10,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:33:10,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-11-04 07:33:10,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e33e2c92/0c208f255cae476590815ad395c59705/FLAGab3912866 [2021-11-04 07:33:10,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e33e2c92/0c208f255cae476590815ad395c59705 [2021-11-04 07:33:10,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:33:10,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:33:10,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:33:10,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:33:10,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:33:10,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:33:10" (1/1) ... [2021-11-04 07:33:10,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102a399d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:10, skipping insertion in model container [2021-11-04 07:33:10,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:33:10" (1/1) ... [2021-11-04 07:33:10,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:33:10,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:33:13,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2021-11-04 07:33:13,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:33:13,997 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:33:14,430 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2021-11-04 07:33:14,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:33:14,633 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:33:14,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14 WrapperNode [2021-11-04 07:33:14,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:33:14,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:33:14,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:33:14,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:33:14,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:14,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:17,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:33:17,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:33:17,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:33:17,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:33:17,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:17,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:17,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:17,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:18,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:19,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:19,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:19,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:33:19,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:33:19,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:33:19,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:33:19,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (1/1) ... [2021-11-04 07:33:19,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:33:19,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:33:19,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 07:33:19,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 07:33:19,683 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 07:33:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:33:19,684 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2021-11-04 07:33:19,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2021-11-04 07:33:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2021-11-04 07:33:19,685 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2021-11-04 07:33:19,685 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2021-11-04 07:33:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:33:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:33:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 07:33:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 07:33:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2021-11-04 07:33:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2021-11-04 07:33:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-04 07:33:19,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-04 07:33:19,686 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2021-11-04 07:33:19,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2021-11-04 07:33:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:33:19,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:33:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:33:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:33:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2021-11-04 07:33:19,687 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2021-11-04 07:33:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:33:19,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:33:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:33:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2021-11-04 07:33:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2021-11-04 07:33:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2021-11-04 07:33:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2021-11-04 07:33:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:33:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2021-11-04 07:33:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2021-11-04 07:33:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 07:33:19,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 07:33:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:34:08,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:34:08,947 INFO L299 CfgBuilder]: Removed 15904 assume(true) statements. [2021-11-04 07:34:08,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:34:08 BoogieIcfgContainer [2021-11-04 07:34:08,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:34:08,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:34:08,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:34:08,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:34:08,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:33:10" (1/3) ... [2021-11-04 07:34:08,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77300839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:34:08, skipping insertion in model container [2021-11-04 07:34:08,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:33:14" (2/3) ... [2021-11-04 07:34:08,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77300839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:34:08, skipping insertion in model container [2021-11-04 07:34:08,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:34:08" (3/3) ... [2021-11-04 07:34:08,966 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-11-04 07:34:08,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:34:08,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2021-11-04 07:34:09,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:34:09,054 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 07:34:09,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2021-11-04 07:34:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 16611 states, 16372 states have (on average 1.419191302223308) internal successors, (23235), 16522 states have internal predecessors, (23235), 79 states have call successors, (79), 12 states have call predecessors, (79), 12 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-04 07:34:09,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-04 07:34:09,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:34:09,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:34:09,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-04 07:34:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:34:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2059371291, now seen corresponding path program 1 times [2021-11-04 07:34:09,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:34:09,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108488351] [2021-11-04 07:34:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:34:09,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:34:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:34:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:34:10,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:34:10,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108488351] [2021-11-04 07:34:10,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108488351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:34:10,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:34:10,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:34:10,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854309237] [2021-11-04 07:34:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:34:10,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:34:10,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:34:10,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:34:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:34:10,196 INFO L87 Difference]: Start difference. First operand has 16611 states, 16372 states have (on average 1.419191302223308) internal successors, (23235), 16522 states have internal predecessors, (23235), 79 states have call successors, (79), 12 states have call predecessors, (79), 12 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:34:12,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:34:13,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 07:34:46,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:34:51,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:35:37,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:35:48,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:35:53,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:36:17,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:36:43,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:37:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:37:19,722 INFO L93 Difference]: Finished difference Result 33216 states and 46859 transitions. [2021-11-04 07:37:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:37:19,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-04 07:37:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:37:19,816 INFO L225 Difference]: With dead ends: 33216 [2021-11-04 07:37:19,817 INFO L226 Difference]: Without dead ends: 16570 [2021-11-04 07:37:19,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:37:19,879 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22409 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176535.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 22416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22409 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187274.28ms IncrementalHoareTripleChecker+Time [2021-11-04 07:37:19,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 22416 Unknown, 0 Unchecked, 106.54ms Time], IncrementalHoareTripleChecker [0 Valid, 22409 Invalid, 7 Unknown, 0 Unchecked, 187274.28ms Time] [2021-11-04 07:37:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16570 states. [2021-11-04 07:37:20,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16570 to 16570. [2021-11-04 07:37:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16570 states, 16332 states have (on average 1.3691525838843988) internal successors, (22361), 16481 states have internal predecessors, (22361), 79 states have call successors, (79), 12 states have call predecessors, (79), 12 states have return successors, (79), 77 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-04 07:37:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16570 states to 16570 states and 22519 transitions. [2021-11-04 07:37:20,505 INFO L78 Accepts]: Start accepts. Automaton has 16570 states and 22519 transitions. Word has length 33 [2021-11-04 07:37:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:37:20,505 INFO L470 AbstractCegarLoop]: Abstraction has 16570 states and 22519 transitions. [2021-11-04 07:37:20,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:37:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 16570 states and 22519 transitions. [2021-11-04 07:37:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-04 07:37:20,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:37:20,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:37:20,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:37:20,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-04 07:37:20,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:37:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash 284081303, now seen corresponding path program 1 times [2021-11-04 07:37:20,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:37:20,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821638449] [2021-11-04 07:37:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:37:20,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:37:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:37:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:37:20,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:37:20,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821638449] [2021-11-04 07:37:20,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821638449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:37:20,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:37:20,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:37:20,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104258915] [2021-11-04 07:37:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:37:20,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:37:20,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:37:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:37:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:37:20,978 INFO L87 Difference]: Start difference. First operand 16570 states and 22519 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:37:23,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:38:00,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:38:06,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:39:03,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:39:15,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:39:22,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:39:55,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:40:37,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:44:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:44:31,911 INFO L93 Difference]: Finished difference Result 49189 states and 66897 transitions. [2021-11-04 07:44:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:44:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-04 07:44:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:44:32,012 INFO L225 Difference]: With dead ends: 49189 [2021-11-04 07:44:32,013 INFO L226 Difference]: Without dead ends: 32625 [2021-11-04 07:44:32,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:44:32,049 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 21844 mSDsluCounter, 22474 mSDsCounter, 0 mSdLazyCounter, 44702 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 406201.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21853 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 44711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 397.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44702 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 426892.50ms IncrementalHoareTripleChecker+Time [2021-11-04 07:44:32,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21853 Valid, 391 Invalid, 44711 Unknown, 0 Unchecked, 397.24ms Time], IncrementalHoareTripleChecker [1 Valid, 44702 Invalid, 8 Unknown, 0 Unchecked, 426892.50ms Time] [2021-11-04 07:44:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32625 states. [2021-11-04 07:44:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32625 to 32332. [2021-11-04 07:44:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32332 states, 32007 states have (on average 1.3719498859624457) internal successors, (43912), 32159 states have internal predecessors, (43912), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (163), 150 states have call predecessors, (163), 154 states have call successors, (163) [2021-11-04 07:44:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32332 states to 32332 states and 44229 transitions. [2021-11-04 07:44:32,683 INFO L78 Accepts]: Start accepts. Automaton has 32332 states and 44229 transitions. Word has length 33 [2021-11-04 07:44:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:44:32,684 INFO L470 AbstractCegarLoop]: Abstraction has 32332 states and 44229 transitions. [2021-11-04 07:44:32,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:44:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 32332 states and 44229 transitions. [2021-11-04 07:44:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-04 07:44:32,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:44:32,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:44:32,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:44:32,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-04 07:44:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:44:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash -481970160, now seen corresponding path program 1 times [2021-11-04 07:44:32,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:44:32,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654721239] [2021-11-04 07:44:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:44:32,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:44:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:44:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:44:33,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:44:33,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654721239] [2021-11-04 07:44:33,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654721239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:44:33,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:44:33,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:44:33,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857487491] [2021-11-04 07:44:33,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:44:33,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:44:33,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:44:33,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:44:33,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:44:33,137 INFO L87 Difference]: Start difference. First operand 32332 states and 44229 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:44:35,237 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:45:14,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:45:20,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:46:27,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:46:41,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:46:48,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15