./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 5b36d44f 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-5b36d44 [2021-11-07 15:32:09,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:32:09,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:32:09,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:32:09,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:32:09,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:32:09,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:32:09,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:32:09,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:32:09,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:32:09,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:32:09,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:32:09,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:32:09,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:32:09,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:32:09,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:32:09,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:32:09,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:32:09,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:32:09,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:32:09,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:32:09,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:32:09,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:32:09,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:32:09,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:32:09,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:32:09,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:32:09,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:32:09,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:32:09,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:32:09,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:32:09,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:32:09,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:32:09,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:32:09,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:32:09,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:32:09,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:32:09,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:32:09,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:32:09,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:32:09,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:32:09,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:32:09,610 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:32:09,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:32:09,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:32:09,614 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:32:09,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:32:09,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:32:09,616 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:32:09,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:32:09,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:32:09,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:32:09,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:32:09,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:32:09,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:32:09,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:32:09,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:32:09,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:32:09,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:32:09,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:32:09,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:32:09,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:32:09,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:32:09,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:32:09,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:32:09,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:32:09,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:32:09,619 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:32:09,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:32:09,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:32:09,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:32:09,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2021-11-07 15:32:09,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:32:09,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:32:09,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:32:09,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:32:09,833 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:32:09,834 INFO L432 ainManager$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 [2021-11-07 15:32:09,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac59d143/bebe2f94d3e84b61aacc62276d86e635/FLAG7cc4aef24 [2021-11-07 15:32:10,479 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:32:10,480 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 [2021-11-07 15:32:10,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac59d143/bebe2f94d3e84b61aacc62276d86e635/FLAG7cc4aef24 [2021-11-07 15:32:10,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac59d143/bebe2f94d3e84b61aacc62276d86e635 [2021-11-07 15:32:10,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:32:10,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:32:10,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:32:10,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:32:10,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:32:10,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:32:10" (1/1) ... [2021-11-07 15:32:10,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dfd06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:10, skipping insertion in model container [2021-11-07 15:32:10,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:32:10" (1/1) ... [2021-11-07 15:32:10,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:32:10,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:32:12,910 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] [2021-11-07 15:32:12,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:32:12,984 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:32:13,389 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] [2021-11-07 15:32:13,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:32:13,543 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:32:13,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13 WrapperNode [2021-11-07 15:32:13,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:32:13,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:32:13,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:32:13,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:32:13,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:13,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:15,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:32:15,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:32:15,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:32:15,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:32:15,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:15,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:16,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:16,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:17,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:17,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:17,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:18,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:32:18,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:32:18,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:32:18,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:32:18,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (1/1) ... [2021-11-07 15:32:18,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:32:18,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:32:18,052 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) [2021-11-07 15:32:18,067 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 [2021-11-07 15:32:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 15:32:18,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:32:18,079 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2021-11-07 15:32:18,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2021-11-07 15:32:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2021-11-07 15:32:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2021-11-07 15:32:18,080 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2021-11-07 15:32:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:32:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:32:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:32:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2021-11-07 15:32:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2021-11-07 15:32:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2021-11-07 15:32:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:32:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:32:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 15:32:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 15:32:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2021-11-07 15:32:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2021-11-07 15:32:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 15:32:18,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 15:32:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2021-11-07 15:32:18,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2021-11-07 15:32:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:32:18,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:32:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:32:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:32:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2021-11-07 15:32:18,082 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2021-11-07 15:32:18,083 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2021-11-07 15:32:18,083 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:32:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2021-11-07 15:32:18,084 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2021-11-07 15:32:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 15:32:18,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 15:32:18,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:34:04,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:34:04,859 INFO L299 CfgBuilder]: Removed 15904 assume(true) statements. [2021-11-07 15:34:04,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:34:04 BoogieIcfgContainer [2021-11-07 15:34:04,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:34:04,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:34:04,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:34:04,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:34:04,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:32:10" (1/3) ... [2021-11-07 15:34:04,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7337de86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:34:04, skipping insertion in model container [2021-11-07 15:34:04,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:13" (2/3) ... [2021-11-07 15:34:04,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7337de86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:34:04, skipping insertion in model container [2021-11-07 15:34:04,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:34:04" (3/3) ... [2021-11-07 15:34:04,876 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-11-07 15:34:04,879 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:34:04,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2021-11-07 15:34:04,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:34:04,951 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 [2021-11-07 15:34:04,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2021-11-07 15:34:05,107 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) [2021-11-07 15:34:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 15:34:05,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:34:05,129 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] [2021-11-07 15:34:05,130 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)] === [2021-11-07 15:34:05,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:34:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2059371291, now seen corresponding path program 1 times [2021-11-07 15:34:05,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:34:05,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18381936] [2021-11-07 15:34:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:34:05,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:34:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:34:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:34:06,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:34:06,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18381936] [2021-11-07 15:34:06,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18381936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:34:06,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:34:06,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:34:06,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943946205] [2021-11-07 15:34:06,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:34:06,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:34:06,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:34:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:34:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:34:06,062 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) [2021-11-07 15:34:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:34:06,463 INFO L93 Difference]: Finished difference Result 33216 states and 46859 transitions. [2021-11-07 15:34:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:34:06,465 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 [2021-11-07 15:34:06,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:34:06,547 INFO L225 Difference]: With dead ends: 33216 [2021-11-07 15:34:06,547 INFO L226 Difference]: Without dead ends: 16570 [2021-11-07 15:34:06,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:34:06,607 INFO L933 BasicCegarLoop]: 22584 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22584 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:34:06,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22584 Invalid, 0 Unknown, 0 Unchecked, 40.65ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:34:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16570 states. [2021-11-07 15:34:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16570 to 16570. [2021-11-07 15:34:06,998 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) [2021-11-07 15:34:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16570 states to 16570 states and 22519 transitions. [2021-11-07 15:34:07,282 INFO L78 Accepts]: Start accepts. Automaton has 16570 states and 22519 transitions. Word has length 33 [2021-11-07 15:34:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:34:07,283 INFO L470 AbstractCegarLoop]: Abstraction has 16570 states and 22519 transitions. [2021-11-07 15:34:07,283 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) [2021-11-07 15:34:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 16570 states and 22519 transitions. [2021-11-07 15:34:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 15:34:07,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:34:07,292 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] [2021-11-07 15:34:07,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:34:07,293 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)] === [2021-11-07 15:34:07,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:34:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 284081303, now seen corresponding path program 1 times [2021-11-07 15:34:07,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:34:07,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320073212] [2021-11-07 15:34:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:34:07,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:34:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:34:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:34:07,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:34:07,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320073212] [2021-11-07 15:34:07,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320073212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:34:07,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:34:07,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:34:07,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629547906] [2021-11-07 15:34:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:34:07,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:34:07,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:34:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:34:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:07,699 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) [2021-11-07 15:34:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:34:08,679 INFO L93 Difference]: Finished difference Result 49390 states and 67146 transitions. [2021-11-07 15:34:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:34:08,679 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 [2021-11-07 15:34:08,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:34:08,794 INFO L225 Difference]: With dead ends: 49390 [2021-11-07 15:34:08,794 INFO L226 Difference]: Without dead ends: 32826 [2021-11-07 15:34:08,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:08,847 INFO L933 BasicCegarLoop]: 22593 mSDtfsCounter, 22110 mSDsluCounter, 22480 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22110 SdHoareTripleChecker+Valid, 45073 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 236.68ms IncrementalHoareTripleChecker+Time [2021-11-07 15:34:08,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22110 Valid, 45073 Invalid, 35 Unknown, 0 Unchecked, 55.03ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 236.68ms Time] [2021-11-07 15:34:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32826 states. [2021-11-07 15:34:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32826 to 32523. [2021-11-07 15:34:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32523 states, 32198 states have (on average 1.371669047766942) internal successors, (44165), 32350 states have internal predecessors, (44165), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (154), 150 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-07 15:34:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32523 states to 32523 states and 44473 transitions. [2021-11-07 15:34:09,741 INFO L78 Accepts]: Start accepts. Automaton has 32523 states and 44473 transitions. Word has length 33 [2021-11-07 15:34:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:34:09,742 INFO L470 AbstractCegarLoop]: Abstraction has 32523 states and 44473 transitions. [2021-11-07 15:34:09,742 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) [2021-11-07 15:34:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 32523 states and 44473 transitions. [2021-11-07 15:34:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 15:34:09,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:34:09,746 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] [2021-11-07 15:34:09,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:34:09,746 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)] === [2021-11-07 15:34:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:34:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash -481970160, now seen corresponding path program 1 times [2021-11-07 15:34:09,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:34:09,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828666897] [2021-11-07 15:34:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:34:09,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:34:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:34:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:34:10,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:34:10,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828666897] [2021-11-07 15:34:10,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828666897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:34:10,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:34:10,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:34:10,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120342973] [2021-11-07 15:34:10,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:34:10,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:34:10,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:34:10,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:34:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:10,106 INFO L87 Difference]: Start difference. First operand 32523 states and 44473 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) [2021-11-07 15:34:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:34:10,934 INFO L93 Difference]: Finished difference Result 32523 states and 44473 transitions. [2021-11-07 15:34:10,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:34:10,935 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 33 [2021-11-07 15:34:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:34:11,016 INFO L225 Difference]: With dead ends: 32523 [2021-11-07 15:34:11,016 INFO L226 Difference]: Without dead ends: 32291 [2021-11-07 15:34:11,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:11,048 INFO L933 BasicCegarLoop]: 22171 mSDtfsCounter, 18158 mSDsluCounter, 3914 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 387.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18158 SdHoareTripleChecker+Valid, 26085 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.10ms SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.63ms IncrementalHoareTripleChecker+Time [2021-11-07 15:34:11,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18158 Valid, 26085 Invalid, 415 Unknown, 0 Unchecked, 33.10ms Time], IncrementalHoareTripleChecker [183 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 459.63ms Time] [2021-11-07 15:34:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32291 states. [2021-11-07 15:34:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32291 to 32291. [2021-11-07 15:34:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32291 states, 32082 states have (on average 1.3658749454522785) internal successors, (43820), 32118 states have internal predecessors, (43820), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (154), 150 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-07 15:34:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32291 states to 32291 states and 44128 transitions. [2021-11-07 15:34:11,792 INFO L78 Accepts]: Start accepts. Automaton has 32291 states and 44128 transitions. Word has length 33 [2021-11-07 15:34:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:34:11,793 INFO L470 AbstractCegarLoop]: Abstraction has 32291 states and 44128 transitions. [2021-11-07 15:34:11,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-07 15:34:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 32291 states and 44128 transitions. [2021-11-07 15:34:11,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 15:34:11,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:34:11,806 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:34:11,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:34:11,807 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-07 15:34:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:34:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash -32864733, now seen corresponding path program 1 times [2021-11-07 15:34:11,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:34:11,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851105008] [2021-11-07 15:34:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:34:11,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:34:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:34:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:34:12,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:34:12,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851105008] [2021-11-07 15:34:12,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851105008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:34:12,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:34:12,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 15:34:12,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451514536] [2021-11-07 15:34:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:34:12,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:34:12,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:34:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:34:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:34:12,647 INFO L87 Difference]: Start difference. First operand 32291 states and 44128 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-11-07 15:34:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:34:20,517 INFO L93 Difference]: Finished difference Result 198935 states and 274095 transitions. [2021-11-07 15:34:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 15:34:20,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 40 [2021-11-07 15:34:20,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:34:21,212 INFO L225 Difference]: With dead ends: 198935 [2021-11-07 15:34:21,213 INFO L226 Difference]: Without dead ends: 166650 [2021-11-07 15:34:21,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 42.22ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 15:34:21,326 INFO L933 BasicCegarLoop]: 49389 mSDtfsCounter, 95664 mSDsluCounter, 133038 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3698.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95820 SdHoareTripleChecker+Valid, 182427 SdHoareTripleChecker+Invalid, 4875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 223.94ms SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4411.08ms IncrementalHoareTripleChecker+Time [2021-11-07 15:34:21,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95820 Valid, 182427 Invalid, 4875 Unknown, 0 Unchecked, 223.94ms Time], IncrementalHoareTripleChecker [854 Valid, 4021 Invalid, 0 Unknown, 0 Unchecked, 4411.08ms Time] [2021-11-07 15:34:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166650 states. [2021-11-07 15:34:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166650 to 32363. [2021-11-07 15:34:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32363 states, 32154 states have (on average 1.3650556695900977) internal successors, (43892), 32190 states have internal predecessors, (43892), 154 states have call successors, (154), 24 states have call predecessors, (154), 24 states have return successors, (154), 150 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-07 15:34:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32363 states to 32363 states and 44200 transitions. [2021-11-07 15:34:23,343 INFO L78 Accepts]: Start accepts. Automaton has 32363 states and 44200 transitions. Word has length 40 [2021-11-07 15:34:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:34:23,344 INFO L470 AbstractCegarLoop]: Abstraction has 32363 states and 44200 transitions. [2021-11-07 15:34:23,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-11-07 15:34:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 32363 states and 44200 transitions. [2021-11-07 15:34:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 15:34:23,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:34:23,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:34:23,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:34:23,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-07 15:34:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:34:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1897345237, now seen corresponding path program 1 times [2021-11-07 15:34:23,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:34:23,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069534487] [2021-11-07 15:34:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:34:23,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:34:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:34:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:34:24,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:34:24,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069534487] [2021-11-07 15:34:24,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069534487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:34:24,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:34:24,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:34:24,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907730805] [2021-11-07 15:34:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:34:24,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:34:24,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:34:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:34:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:24,085 INFO L87 Difference]: Start difference. First operand 32363 states and 44200 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-07 15:34:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:34:25,198 INFO L93 Difference]: Finished difference Result 60990 states and 83250 transitions. [2021-11-07 15:34:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:34:25,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-07 15:34:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:34:25,269 INFO L225 Difference]: With dead ends: 60990 [2021-11-07 15:34:25,270 INFO L226 Difference]: Without dead ends: 28633 [2021-11-07 15:34:25,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:25,335 INFO L933 BasicCegarLoop]: 19717 mSDtfsCounter, 19705 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19705 SdHoareTripleChecker+Valid, 19717 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.14ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.27ms IncrementalHoareTripleChecker+Time [2021-11-07 15:34:25,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19705 Valid, 19717 Invalid, 2 Unknown, 0 Unchecked, 23.14ms Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 106.27ms Time] [2021-11-07 15:34:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28633 states. [2021-11-07 15:34:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28633 to 28633. [2021-11-07 15:34:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28633 states, 28440 states have (on average 1.3632208157524612) internal successors, (38770), 28472 states have internal predecessors, (38770), 142 states have call successors, (142), 24 states have call predecessors, (142), 24 states have return successors, (142), 138 states have call predecessors, (142), 142 states have call successors, (142) [2021-11-07 15:34:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28633 states to 28633 states and 39054 transitions. [2021-11-07 15:34:26,371 INFO L78 Accepts]: Start accepts. Automaton has 28633 states and 39054 transitions. Word has length 46 [2021-11-07 15:34:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:34:26,371 INFO L470 AbstractCegarLoop]: Abstraction has 28633 states and 39054 transitions. [2021-11-07 15:34:26,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-07 15:34:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 28633 states and 39054 transitions. [2021-11-07 15:34:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 15:34:26,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:34:26,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:34:26,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:34:26,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-07 15:34:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:34:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2034294863, now seen corresponding path program 1 times [2021-11-07 15:34:26,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:34:26,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216361249] [2021-11-07 15:34:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:34:26,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:34:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:34:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:34:26,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:34:26,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216361249] [2021-11-07 15:34:26,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216361249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:34:26,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:34:26,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:34:26,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893038191] [2021-11-07 15:34:26,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:34:26,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:34:26,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:34:26,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:34:26,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:26,663 INFO L87 Difference]: Start difference. First operand 28633 states and 39054 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2021-11-07 15:34:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:34:28,431 INFO L93 Difference]: Finished difference Result 84336 states and 115135 transitions. [2021-11-07 15:34:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:34:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2021-11-07 15:34:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:34:28,566 INFO L225 Difference]: With dead ends: 84336 [2021-11-07 15:34:28,566 INFO L226 Difference]: Without dead ends: 55709 [2021-11-07 15:34:28,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:34:28,782 INFO L933 BasicCegarLoop]: 20166 mSDtfsCounter, 18681 mSDsluCounter, 19679 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18681 SdHoareTripleChecker+Valid, 39845 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.67ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.98ms IncrementalHoareTripleChecker+Time [2021-11-07 15:34:28,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18681 Valid, 39845 Invalid, 35 Unknown, 0 Unchecked, 35.67ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 216.98ms Time] [2021-11-07 15:34:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55709 states.