./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 173e3943 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-dev-173e394 [2021-11-06 17:06:03,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:06:03,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:06:03,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:06:03,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:06:03,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:06:03,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:06:03,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:06:03,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:06:03,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:06:03,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:06:03,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:06:03,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:06:03,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:06:03,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:06:03,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:06:03,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:06:03,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:06:03,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:06:03,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:06:03,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:06:03,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:06:03,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:06:03,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:06:03,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:06:04,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:06:04,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:06:04,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:06:04,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:06:04,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:06:04,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:06:04,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:06:04,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:06:04,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:06:04,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:06:04,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:06:04,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:06:04,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:06:04,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:06:04,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:06:04,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:06:04,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:06:04,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:06:04,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:06:04,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:06:04,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:06:04,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:06:04,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:06:04,033 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:06:04,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:06:04,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:06:04,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:06:04,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:06:04,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:06:04,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:06:04,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:06:04,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:06:04,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:06:04,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:06:04,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:06:04,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:06:04,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:06:04,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:06:04,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:06:04,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:06:04,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:06:04,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:06:04,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:06:04,036 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:06:04,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:06:04,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:06:04,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2021-11-06 17:06:04,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:06:04,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:06:04,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:06:04,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:06:04,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:06:04,271 INFO L432 ainManager$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 [2021-11-06 17:06:04,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4dc87337/a66547ae5d864fb7a68e004f36437b78/FLAG4439f81a2 [2021-11-06 17:06:05,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:06:05,001 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 [2021-11-06 17:06:05,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4dc87337/a66547ae5d864fb7a68e004f36437b78/FLAG4439f81a2 [2021-11-06 17:06:05,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4dc87337/a66547ae5d864fb7a68e004f36437b78 [2021-11-06 17:06:05,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:06:05,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:06:05,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:06:05,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:06:05,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:06:05,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:06:05" (1/1) ... [2021-11-06 17:06:05,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39511c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:05, skipping insertion in model container [2021-11-06 17:06:05,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:06:05" (1/1) ... [2021-11-06 17:06:05,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:06:05,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:06:08,038 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] [2021-11-06 17:06:08,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:06:08,102 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:06:08,505 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] [2021-11-06 17:06:08,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:06:08,711 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:06:08,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08 WrapperNode [2021-11-06 17:06:08,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:06:08,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:06:08,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:06:08,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:06:08,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:08,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:10,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:06:10,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:06:10,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:06:10,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:06:10,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:10,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:11,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:11,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:12,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:13,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:13,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:13,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:06:13,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:06:13,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:06:13,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:06:13,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (1/1) ... [2021-11-06 17:06:13,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:06:13,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:06:13,760 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) [2021-11-06 17:06:13,799 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 [2021-11-06 17:06:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:06:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:06:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2021-11-06 17:06:13,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2021-11-06 17:06:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2021-11-06 17:06:13,816 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2021-11-06 17:06:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2021-11-06 17:06:13,817 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:06:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:06:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 17:06:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 17:06:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2021-11-06 17:06:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2021-11-06 17:06:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:06:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:06:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2021-11-06 17:06:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2021-11-06 17:06:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:06:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2021-11-06 17:06:13,819 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:06:13,819 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2021-11-06 17:06:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2021-11-06 17:06:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2021-11-06 17:06:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2021-11-06 17:06:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:06:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2021-11-06 17:06:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2021-11-06 17:06:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:06:13,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:06:13,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:08:00,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:08:00,580 INFO L299 CfgBuilder]: Removed 15904 assume(true) statements. [2021-11-06 17:08:00,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:08:00 BoogieIcfgContainer [2021-11-06 17:08:00,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:08:00,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:08:00,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:08:00,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:08:00,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:06:05" (1/3) ... [2021-11-06 17:08:00,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c968585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:08:00, skipping insertion in model container [2021-11-06 17:08:00,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:06:08" (2/3) ... [2021-11-06 17:08:00,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c968585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:08:00, skipping insertion in model container [2021-11-06 17:08:00,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:08:00" (3/3) ... [2021-11-06 17:08:00,602 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-11-06 17:08:00,606 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:08:00,606 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2021-11-06 17:08:00,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:08:00,685 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 [2021-11-06 17:08:00,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2021-11-06 17:08:00,843 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) [2021-11-06 17:08:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 17:08:00,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:00,859 INFO L513 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] [2021-11-06 17:08:00,860 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)] === [2021-11-06 17:08:00,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2059371291, now seen corresponding path program 1 times [2021-11-06 17:08:00,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:00,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677995438] [2021-11-06 17:08:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:00,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:08:01,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:01,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677995438] [2021-11-06 17:08:01,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677995438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:01,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:01,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:08:01,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698085231] [2021-11-06 17:08:01,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:08:01,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:08:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:08:01,589 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) [2021-11-06 17:08:01,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:01,968 INFO L93 Difference]: Finished difference Result 33216 states and 46859 transitions. [2021-11-06 17:08:01,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:08:01,969 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 [2021-11-06 17:08:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:02,044 INFO L225 Difference]: With dead ends: 33216 [2021-11-06 17:08:02,044 INFO L226 Difference]: Without dead ends: 16570 [2021-11-06 17:08:02,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:08:02,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16570 states. [2021-11-06 17:08:02,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16570 to 16570. [2021-11-06 17:08:02,627 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) [2021-11-06 17:08:02,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16570 states to 16570 states and 22519 transitions. [2021-11-06 17:08:02,681 INFO L78 Accepts]: Start accepts. Automaton has 16570 states and 22519 transitions. Word has length 33 [2021-11-06 17:08:02,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:02,682 INFO L470 AbstractCegarLoop]: Abstraction has 16570 states and 22519 transitions. [2021-11-06 17:08:02,683 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) [2021-11-06 17:08:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 16570 states and 22519 transitions. [2021-11-06 17:08:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 17:08:02,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:02,689 INFO L513 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] [2021-11-06 17:08:02,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:08:02,691 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)] === [2021-11-06 17:08:02,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:02,693 INFO L85 PathProgramCache]: Analyzing trace with hash 284081303, now seen corresponding path program 1 times [2021-11-06 17:08:02,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:02,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464329825] [2021-11-06 17:08:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:02,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:08:03,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:03,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464329825] [2021-11-06 17:08:03,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464329825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:03,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:03,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:08:03,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047021395] [2021-11-06 17:08:03,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:08:03,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:08:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:03,212 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) [2021-11-06 17:08:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:04,208 INFO L93 Difference]: Finished difference Result 49390 states and 67146 transitions. [2021-11-06 17:08:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:08:04,208 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 [2021-11-06 17:08:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:04,314 INFO L225 Difference]: With dead ends: 49390 [2021-11-06 17:08:04,315 INFO L226 Difference]: Without dead ends: 32826 [2021-11-06 17:08:04,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32826 states. [2021-11-06 17:08:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32826 to 32523. [2021-11-06 17:08:05,073 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) [2021-11-06 17:08:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32523 states to 32523 states and 44473 transitions. [2021-11-06 17:08:05,146 INFO L78 Accepts]: Start accepts. Automaton has 32523 states and 44473 transitions. Word has length 33 [2021-11-06 17:08:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:05,146 INFO L470 AbstractCegarLoop]: Abstraction has 32523 states and 44473 transitions. [2021-11-06 17:08:05,147 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) [2021-11-06 17:08:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 32523 states and 44473 transitions. [2021-11-06 17:08:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 17:08:05,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:05,150 INFO L513 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] [2021-11-06 17:08:05,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:08:05,151 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)] === [2021-11-06 17:08:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash -481970160, now seen corresponding path program 1 times [2021-11-06 17:08:05,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:05,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669389345] [2021-11-06 17:08:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:05,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:08:05,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:05,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669389345] [2021-11-06 17:08:05,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669389345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:05,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:05,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:08:05,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109790997] [2021-11-06 17:08:05,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:08:05,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:05,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:08:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:05,661 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) [2021-11-06 17:08:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:06,577 INFO L93 Difference]: Finished difference Result 32523 states and 44473 transitions. [2021-11-06 17:08:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:08:06,578 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 [2021-11-06 17:08:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:06,659 INFO L225 Difference]: With dead ends: 32523 [2021-11-06 17:08:06,659 INFO L226 Difference]: Without dead ends: 32291 [2021-11-06 17:08:06,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32291 states. [2021-11-06 17:08:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32291 to 32291. [2021-11-06 17:08:07,379 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) [2021-11-06 17:08:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32291 states to 32291 states and 44128 transitions. [2021-11-06 17:08:07,451 INFO L78 Accepts]: Start accepts. Automaton has 32291 states and 44128 transitions. Word has length 33 [2021-11-06 17:08:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:07,451 INFO L470 AbstractCegarLoop]: Abstraction has 32291 states and 44128 transitions. [2021-11-06 17:08:07,451 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) [2021-11-06 17:08:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 32291 states and 44128 transitions. [2021-11-06 17:08:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 17:08:07,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:07,462 INFO L513 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] [2021-11-06 17:08:07,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:08:07,462 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)] === [2021-11-06 17:08:07,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash -32864733, now seen corresponding path program 1 times [2021-11-06 17:08:07,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:07,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634635808] [2021-11-06 17:08:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:07,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:08:08,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:08,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634635808] [2021-11-06 17:08:08,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634635808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:08,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:08,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 17:08:08,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252619640] [2021-11-06 17:08:08,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:08:08,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:08:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:08:08,429 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) [2021-11-06 17:08:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:16,826 INFO L93 Difference]: Finished difference Result 198935 states and 274095 transitions. [2021-11-06 17:08:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 17:08:16,834 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 [2021-11-06 17:08:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:17,412 INFO L225 Difference]: With dead ends: 198935 [2021-11-06 17:08:17,412 INFO L226 Difference]: Without dead ends: 166650 [2021-11-06 17:08:17,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:08:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166650 states. [2021-11-06 17:08:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166650 to 32363. [2021-11-06 17:08:19,593 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) [2021-11-06 17:08:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32363 states to 32363 states and 44200 transitions. [2021-11-06 17:08:19,663 INFO L78 Accepts]: Start accepts. Automaton has 32363 states and 44200 transitions. Word has length 40 [2021-11-06 17:08:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:19,664 INFO L470 AbstractCegarLoop]: Abstraction has 32363 states and 44200 transitions. [2021-11-06 17:08:19,664 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) [2021-11-06 17:08:19,664 INFO L276 IsEmpty]: Start isEmpty. Operand 32363 states and 44200 transitions. [2021-11-06 17:08:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 17:08:19,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:19,676 INFO L513 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] [2021-11-06 17:08:19,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:08:19,676 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)] === [2021-11-06 17:08:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1897345237, now seen corresponding path program 1 times [2021-11-06 17:08:19,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:19,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103127643] [2021-11-06 17:08:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:19,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:08:20,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:20,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103127643] [2021-11-06 17:08:20,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103127643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:20,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:20,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:08:20,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016112978] [2021-11-06 17:08:20,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:08:20,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:08:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:20,509 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) [2021-11-06 17:08:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:21,480 INFO L93 Difference]: Finished difference Result 60990 states and 83250 transitions. [2021-11-06 17:08:21,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:08:21,481 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 [2021-11-06 17:08:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:21,557 INFO L225 Difference]: With dead ends: 60990 [2021-11-06 17:08:21,557 INFO L226 Difference]: Without dead ends: 28633 [2021-11-06 17:08:21,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28633 states. [2021-11-06 17:08:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28633 to 28633. [2021-11-06 17:08:22,440 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) [2021-11-06 17:08:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28633 states to 28633 states and 39054 transitions. [2021-11-06 17:08:22,508 INFO L78 Accepts]: Start accepts. Automaton has 28633 states and 39054 transitions. Word has length 46 [2021-11-06 17:08:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:22,509 INFO L470 AbstractCegarLoop]: Abstraction has 28633 states and 39054 transitions. [2021-11-06 17:08:22,510 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) [2021-11-06 17:08:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 28633 states and 39054 transitions. [2021-11-06 17:08:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 17:08:22,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:22,520 INFO L513 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] [2021-11-06 17:08:22,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:08:22,521 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)] === [2021-11-06 17:08:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:22,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2034294863, now seen corresponding path program 1 times [2021-11-06 17:08:22,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:22,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156804171] [2021-11-06 17:08:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:22,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:08:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:08:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:08:22,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:08:22,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156804171] [2021-11-06 17:08:22,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156804171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:08:22,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:08:22,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:08:22,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700232485] [2021-11-06 17:08:22,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:08:22,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:08:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:08:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:22,787 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) [2021-11-06 17:08:24,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:08:24,738 INFO L93 Difference]: Finished difference Result 84336 states and 115135 transitions. [2021-11-06 17:08:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:08:24,739 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 [2021-11-06 17:08:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:08:24,867 INFO L225 Difference]: With dead ends: 84336 [2021-11-06 17:08:24,867 INFO L226 Difference]: Without dead ends: 55709 [2021-11-06 17:08:24,926 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:08:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55709 states. [2021-11-06 17:08:26,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55709 to 55667. [2021-11-06 17:08:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55667 states, 55308 states have (on average 1.3650104867288637) internal successors, (75496), 55346 states have internal predecessors, (75496), 284 states have call successors, (284), 48 states have call predecessors, (284), 48 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2021-11-06 17:08:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55667 states to 55667 states and 76064 transitions. [2021-11-06 17:08:26,660 INFO L78 Accepts]: Start accepts. Automaton has 55667 states and 76064 transitions. Word has length 47 [2021-11-06 17:08:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:08:26,660 INFO L470 AbstractCegarLoop]: Abstraction has 55667 states and 76064 transitions. [2021-11-06 17:08:26,660 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-11-06 17:08:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 55667 states and 76064 transitions. [2021-11-06 17:08:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 17:08:26,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:08:26,673 INFO L513 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] [2021-11-06 17:08:26,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:08:26,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONERROR_FUNCTION === [hci_uart_tty_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION (and 144 more)] === [2021-11-06 17:08:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:08:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2099831621, now seen corresponding path program 1 times [2021-11-06 17:08:26,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:08:26,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963233224] [2021-11-06 17:08:26,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:08:26,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms