./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.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 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:25:12,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:25:12,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:25:12,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:25:12,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:25:12,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:25:12,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:25:12,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:25:12,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:25:12,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:25:12,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:25:12,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:25:12,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:25:12,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:25:12,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:25:12,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:25:12,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:25:12,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:25:12,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:25:12,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:25:12,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:25:12,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:25:12,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:25:12,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:25:12,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:25:12,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:25:12,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:25:12,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:25:12,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:25:12,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:25:12,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:25:12,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:25:12,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:25:12,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:25:12,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:25:12,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:25:12,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:25:12,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:25:12,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:25:12,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:25:12,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:25:12,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:25:12,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:25:12,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:25:12,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:25:12,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:25:12,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:25:12,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:25:12,994 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:25:12,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:25:12,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:25:12,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:25:12,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:25:12,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:25:12,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:25:12,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:25:12,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:25:12,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:25:12,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:25:12,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:25:12,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:25:12,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:25:12,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:25:12,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:25:12,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:25:12,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:25:12,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:25:13,002 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:25:13,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:25:13,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:25:13,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:25:13,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-11-05 16:25:13,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:25:13,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:25:13,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:25:13,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:25:13,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:25:13,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 16:25:13,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c36eb72/cd15ce9a4cab4e32971cea33ebdae466/FLAGe6387e7bc [2021-11-05 16:25:13,978 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:25:13,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 16:25:14,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c36eb72/cd15ce9a4cab4e32971cea33ebdae466/FLAGe6387e7bc [2021-11-05 16:25:14,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33c36eb72/cd15ce9a4cab4e32971cea33ebdae466 [2021-11-05 16:25:14,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:25:14,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:25:14,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:25:14,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:25:14,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:25:14,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:25:14" (1/1) ... [2021-11-05 16:25:14,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adc3acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:14, skipping insertion in model container [2021-11-05 16:25:14,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:25:14" (1/1) ... [2021-11-05 16:25:14,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:25:14,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:25:15,238 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-11-05 16:25:15,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:25:15,956 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:25:16,028 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2021-11-05 16:25:16,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:25:16,428 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:25:16,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16 WrapperNode [2021-11-05 16:25:16,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:25:16,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:25:16,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:25:16,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:25:16,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:16,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:16,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:25:16,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:25:16,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:25:16,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:25:16,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:16,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:16,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:16,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:17,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:17,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:17,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:17,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:25:17,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:25:17,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:25:17,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:25:17,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (1/1) ... [2021-11-05 16:25:17,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:25:17,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:25:17,161 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) [2021-11-05 16:25:17,201 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 [2021-11-05 16:25:17,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-05 16:25:17,246 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-05 16:25:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-05 16:25:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-05 16:25:17,247 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-05 16:25:17,247 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-05 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-05 16:25:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-05 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:25:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-05 16:25:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-05 16:25:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-05 16:25:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-05 16:25:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-05 16:25:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-05 16:25:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-05 16:25:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-05 16:25:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-05 16:25:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-05 16:25:17,249 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-05 16:25:17,249 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-05 16:25:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 16:25:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-05 16:25:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:25:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-05 16:25:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-05 16:25:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-11-05 16:25:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-11-05 16:25:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-05 16:25:17,250 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-05 16:25:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:25:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 16:25:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 16:25:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 16:25:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-05 16:25:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-05 16:25:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-05 16:25:17,251 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-05 16:25:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-11-05 16:25:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-11-05 16:25:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:25:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:25:17,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 16:25:17,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-05 16:25:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-05 16:25:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-05 16:25:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-05 16:25:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-05 16:25:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-05 16:25:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-05 16:25:17,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-11-05 16:25:17,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-11-05 16:25:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-05 16:25:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-05 16:25:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-05 16:25:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-05 16:25:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-05 16:25:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-05 16:25:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:25:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-05 16:25:17,255 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-05 16:25:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-05 16:25:17,256 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-05 16:25:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-11-05 16:25:17,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-11-05 16:25:17,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-11-05 16:25:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-11-05 16:25:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-05 16:25:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-05 16:25:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:25:17,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-05 16:25:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-05 16:25:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-05 16:25:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-05 16:25:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-11-05 16:25:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-11-05 16:25:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:25:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:25:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 16:25:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-11-05 16:25:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-11-05 16:25:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:25:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:25:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:25:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 16:25:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-05 16:25:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-05 16:25:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-05 16:25:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-05 16:25:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-05 16:25:17,262 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-05 16:25:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-05 16:25:17,263 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-05 16:25:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 16:25:17,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 16:25:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:25:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:25:17,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:25:39,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:25:39,950 INFO L299 CfgBuilder]: Removed 1864 assume(true) statements. [2021-11-05 16:25:39,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:25:39 BoogieIcfgContainer [2021-11-05 16:25:39,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:25:39,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:25:39,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:25:39,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:25:39,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:25:14" (1/3) ... [2021-11-05 16:25:39,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c0b9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:25:39, skipping insertion in model container [2021-11-05 16:25:39,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:25:16" (2/3) ... [2021-11-05 16:25:39,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c0b9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:25:39, skipping insertion in model container [2021-11-05 16:25:39,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:25:39" (3/3) ... [2021-11-05 16:25:39,961 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-05 16:25:39,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:25:39,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-05 16:25:40,012 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:25:40,017 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 [2021-11-05 16:25:40,017 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-05 16:25:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 2307 states, 2122 states have (on average 1.3836003770028276) internal successors, (2936), 2145 states have internal predecessors, (2936), 129 states have call successors, (129), 43 states have call predecessors, (129), 43 states have return successors, (129), 120 states have call predecessors, (129), 129 states have call successors, (129) [2021-11-05 16:25:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 16:25:40,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:40,078 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] [2021-11-05 16:25:40,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:40,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:40,084 INFO L85 PathProgramCache]: Analyzing trace with hash -235652551, now seen corresponding path program 1 times [2021-11-05 16:25:40,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:40,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372503689] [2021-11-05 16:25:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:40,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:40,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:40,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372503689] [2021-11-05 16:25:40,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372503689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:40,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:40,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:25:40,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323757143] [2021-11-05 16:25:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:40,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:40,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:40,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:40,797 INFO L87 Difference]: Start difference. First operand has 2307 states, 2122 states have (on average 1.3836003770028276) internal successors, (2936), 2145 states have internal predecessors, (2936), 129 states have call successors, (129), 43 states have call predecessors, (129), 43 states have return successors, (129), 120 states have call predecessors, (129), 129 states have call successors, (129) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-05 16:25:42,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 16:25:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:43,281 INFO L93 Difference]: Finished difference Result 6691 states and 9495 transitions. [2021-11-05 16:25:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:43,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-05 16:25:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:43,315 INFO L225 Difference]: With dead ends: 6691 [2021-11-05 16:25:43,315 INFO L226 Difference]: Without dead ends: 4350 [2021-11-05 16:25:43,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:43,335 INFO L933 BasicCegarLoop]: 3218 mSDtfsCounter, 2887 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2091.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 6238 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2211.82ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:43,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2887 Valid, 6238 Invalid, 15 Unknown, 0 Unchecked, 38.46ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2211.82ms Time] [2021-11-05 16:25:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-11-05 16:25:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 4338. [2021-11-05 16:25:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 3982 states have (on average 1.3392767453540935) internal successors, (5333), 4015 states have internal predecessors, (5333), 258 states have call successors, (258), 86 states have call predecessors, (258), 86 states have return successors, (258), 240 states have call predecessors, (258), 258 states have call successors, (258) [2021-11-05 16:25:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 5849 transitions. [2021-11-05 16:25:43,512 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 5849 transitions. Word has length 36 [2021-11-05 16:25:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:25:43,513 INFO L470 AbstractCegarLoop]: Abstraction has 4338 states and 5849 transitions. [2021-11-05 16:25:43,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2021-11-05 16:25:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 5849 transitions. [2021-11-05 16:25:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 16:25:43,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:43,522 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] [2021-11-05 16:25:43,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:25:43,523 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash -576564181, now seen corresponding path program 1 times [2021-11-05 16:25:43,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:43,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123848254] [2021-11-05 16:25:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:43,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:43,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:43,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123848254] [2021-11-05 16:25:43,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123848254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:43,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:43,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:25:43,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900623194] [2021-11-05 16:25:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:43,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:43,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:43,788 INFO L87 Difference]: Start difference. First operand 4338 states and 5849 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:25:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:44,231 INFO L93 Difference]: Finished difference Result 12095 states and 16284 transitions. [2021-11-05 16:25:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:44,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-05 16:25:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:44,266 INFO L225 Difference]: With dead ends: 12095 [2021-11-05 16:25:44,266 INFO L226 Difference]: Without dead ends: 7834 [2021-11-05 16:25:44,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:44,283 INFO L933 BasicCegarLoop]: 3177 mSDtfsCounter, 2479 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 225.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2479 SdHoareTripleChecker+Valid, 6047 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 262.25ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:44,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2479 Valid, 6047 Invalid, 98 Unknown, 0 Unchecked, 12.61ms Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 262.25ms Time] [2021-11-05 16:25:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2021-11-05 16:25:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7770. [2021-11-05 16:25:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 7140 states have (on average 1.337955182072829) internal successors, (9553), 7195 states have internal predecessors, (9553), 452 states have call successors, (452), 166 states have call predecessors, (452), 166 states have return successors, (452), 416 states have call predecessors, (452), 452 states have call successors, (452) [2021-11-05 16:25:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 10457 transitions. [2021-11-05 16:25:44,481 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 10457 transitions. Word has length 46 [2021-11-05 16:25:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:25:44,481 INFO L470 AbstractCegarLoop]: Abstraction has 7770 states and 10457 transitions. [2021-11-05 16:25:44,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:25:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 10457 transitions. [2021-11-05 16:25:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 16:25:44,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:44,484 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] [2021-11-05 16:25:44,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:25:44,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1159215010, now seen corresponding path program 1 times [2021-11-05 16:25:44,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:44,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137299494] [2021-11-05 16:25:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:44,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:45,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:45,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137299494] [2021-11-05 16:25:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137299494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:45,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:25:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627126446] [2021-11-05 16:25:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:45,114 INFO L87 Difference]: Start difference. First operand 7770 states and 10457 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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) [2021-11-05 16:25:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:45,519 INFO L93 Difference]: Finished difference Result 23154 states and 32392 transitions. [2021-11-05 16:25:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:45,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 [2021-11-05 16:25:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:45,595 INFO L225 Difference]: With dead ends: 23154 [2021-11-05 16:25:45,595 INFO L226 Difference]: Without dead ends: 15461 [2021-11-05 16:25:45,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:45,647 INFO L933 BasicCegarLoop]: 3284 mSDtfsCounter, 3104 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 6232 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.84ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.17ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:45,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3104 Valid, 6232 Invalid, 51 Unknown, 0 Unchecked, 11.84ms Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 86.17ms Time] [2021-11-05 16:25:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15461 states. [2021-11-05 16:25:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15461 to 15435. [2021-11-05 16:25:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15435 states, 14187 states have (on average 1.3381264537957285) internal successors, (18984), 14286 states have internal predecessors, (18984), 904 states have call successors, (904), 332 states have call predecessors, (904), 332 states have return successors, (1326), 832 states have call predecessors, (1326), 904 states have call successors, (1326) [2021-11-05 16:25:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15435 states to 15435 states and 21214 transitions. [2021-11-05 16:25:46,107 INFO L78 Accepts]: Start accepts. Automaton has 15435 states and 21214 transitions. Word has length 46 [2021-11-05 16:25:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:25:46,107 INFO L470 AbstractCegarLoop]: Abstraction has 15435 states and 21214 transitions. [2021-11-05 16:25:46,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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) [2021-11-05 16:25:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 15435 states and 21214 transitions. [2021-11-05 16:25:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 16:25:46,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:46,114 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] [2021-11-05 16:25:46,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:25:46,115 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1575923164, now seen corresponding path program 1 times [2021-11-05 16:25:46,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:46,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314232888] [2021-11-05 16:25:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:46,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:46,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:46,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314232888] [2021-11-05 16:25:46,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314232888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:46,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:46,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:25:46,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114922646] [2021-11-05 16:25:46,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:46,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:46,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:46,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:46,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:46,570 INFO L87 Difference]: Start difference. First operand 15435 states and 21214 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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) [2021-11-05 16:25:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:47,388 INFO L93 Difference]: Finished difference Result 46133 states and 67163 transitions. [2021-11-05 16:25:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:47,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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 [2021-11-05 16:25:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:47,514 INFO L225 Difference]: With dead ends: 46133 [2021-11-05 16:25:47,515 INFO L226 Difference]: Without dead ends: 30775 [2021-11-05 16:25:47,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.04ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:47,624 INFO L933 BasicCegarLoop]: 3306 mSDtfsCounter, 3104 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 6271 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.90ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:47,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3104 Valid, 6271 Invalid, 17 Unknown, 0 Unchecked, 11.77ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 28.90ms Time] [2021-11-05 16:25:47,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30775 states. [2021-11-05 16:25:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30775 to 30750. [2021-11-05 16:25:48,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30750 states, 28266 states have (on average 1.3378617420222174) internal successors, (37816), 28453 states have internal predecessors, (37816), 1808 states have call successors, (1808), 664 states have call predecessors, (1808), 664 states have return successors, (3990), 1664 states have call predecessors, (3990), 1808 states have call successors, (3990) [2021-11-05 16:25:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30750 states to 30750 states and 43614 transitions. [2021-11-05 16:25:48,514 INFO L78 Accepts]: Start accepts. Automaton has 30750 states and 43614 transitions. Word has length 47 [2021-11-05 16:25:48,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:25:48,516 INFO L470 AbstractCegarLoop]: Abstraction has 30750 states and 43614 transitions. [2021-11-05 16:25:48,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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) [2021-11-05 16:25:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 30750 states and 43614 transitions. [2021-11-05 16:25:48,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 16:25:48,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:48,519 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, 1] [2021-11-05 16:25:48,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:25:48,519 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:48,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1608974040, now seen corresponding path program 1 times [2021-11-05 16:25:48,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:48,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267929883] [2021-11-05 16:25:48,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:48,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:48,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:48,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267929883] [2021-11-05 16:25:48,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267929883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:48,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:48,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:25:48,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915243839] [2021-11-05 16:25:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:48,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:48,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:48,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:48,764 INFO L87 Difference]: Start difference. First operand 30750 states and 43614 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2021-11-05 16:25:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:49,374 INFO L93 Difference]: Finished difference Result 30769 states and 43625 transitions. [2021-11-05 16:25:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 48 [2021-11-05 16:25:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:49,488 INFO L225 Difference]: With dead ends: 30769 [2021-11-05 16:25:49,489 INFO L226 Difference]: Without dead ends: 30767 [2021-11-05 16:25:49,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:49,508 INFO L933 BasicCegarLoop]: 3308 mSDtfsCounter, 3101 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3101 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.08ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:49,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3101 Valid, 6272 Invalid, 9 Unknown, 0 Unchecked, 9.50ms Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 13.08ms Time] [2021-11-05 16:25:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30767 states. [2021-11-05 16:25:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30767 to 30751. [2021-11-05 16:25:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30751 states, 28267 states have (on average 1.3378497895071992) internal successors, (37817), 28454 states have internal predecessors, (37817), 1808 states have call successors, (1808), 664 states have call predecessors, (1808), 664 states have return successors, (3990), 1664 states have call predecessors, (3990), 1808 states have call successors, (3990) [2021-11-05 16:25:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30751 states to 30751 states and 43615 transitions. [2021-11-05 16:25:50,280 INFO L78 Accepts]: Start accepts. Automaton has 30751 states and 43615 transitions. Word has length 48 [2021-11-05 16:25:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:25:50,281 INFO L470 AbstractCegarLoop]: Abstraction has 30751 states and 43615 transitions. [2021-11-05 16:25:50,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2021-11-05 16:25:50,283 INFO L276 IsEmpty]: Start isEmpty. Operand 30751 states and 43615 transitions. [2021-11-05 16:25:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 16:25:50,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:50,286 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, 1, 1, 1, 1] [2021-11-05 16:25:50,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:25:50,288 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:50,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:50,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1031599116, now seen corresponding path program 1 times [2021-11-05 16:25:50,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:50,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927592818] [2021-11-05 16:25:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:50,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:50,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:50,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927592818] [2021-11-05 16:25:50,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927592818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:50,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:50,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:25:50,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192431534] [2021-11-05 16:25:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:50,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:50,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:50,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:50,539 INFO L87 Difference]: Start difference. First operand 30751 states and 43615 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:25:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:52,197 INFO L93 Difference]: Finished difference Result 90939 states and 131765 transitions. [2021-11-05 16:25:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:52,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-05 16:25:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:52,521 INFO L225 Difference]: With dead ends: 90939 [2021-11-05 16:25:52,521 INFO L226 Difference]: Without dead ends: 60265 [2021-11-05 16:25:52,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:52,682 INFO L933 BasicCegarLoop]: 3324 mSDtfsCounter, 3018 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3018 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.80ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.37ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:52,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3018 Valid, 6290 Invalid, 38 Unknown, 0 Unchecked, 10.80ms Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 113.37ms Time] [2021-11-05 16:25:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60265 states. [2021-11-05 16:25:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60265 to 60035. [2021-11-05 16:25:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60035 states, 55279 states have (on average 1.3372347546084409) internal successors, (73921), 55594 states have internal predecessors, (73921), 3440 states have call successors, (3440), 1304 states have call predecessors, (3440), 1304 states have return successors, (10616), 3192 states have call predecessors, (10616), 3440 states have call successors, (10616) [2021-11-05 16:25:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60035 states to 60035 states and 87977 transitions. [2021-11-05 16:25:54,706 INFO L78 Accepts]: Start accepts. Automaton has 60035 states and 87977 transitions. Word has length 51 [2021-11-05 16:25:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:25:54,706 INFO L470 AbstractCegarLoop]: Abstraction has 60035 states and 87977 transitions. [2021-11-05 16:25:54,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:25:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 60035 states and 87977 transitions. [2021-11-05 16:25:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 16:25:54,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:25:54,709 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, 1, 1] [2021-11-05 16:25:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:25:54,710 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:25:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:25:54,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1661416110, now seen corresponding path program 1 times [2021-11-05 16:25:54,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:25:54,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861337654] [2021-11-05 16:25:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:25:54,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:25:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:25:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:25:54,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:25:54,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861337654] [2021-11-05 16:25:54,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861337654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:25:54,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:25:54,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:25:54,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254063352] [2021-11-05 16:25:54,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:25:54,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:25:54,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:25:54,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:25:54,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:54,961 INFO L87 Difference]: Start difference. First operand 60035 states and 87977 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-05 16:25:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:25:58,052 INFO L93 Difference]: Finished difference Result 149534 states and 225284 transitions. [2021-11-05 16:25:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:25:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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 49 [2021-11-05 16:25:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:25:58,738 INFO L225 Difference]: With dead ends: 149534 [2021-11-05 16:25:58,739 INFO L226 Difference]: Without dead ends: 89576 [2021-11-05 16:25:59,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:25:59,030 INFO L933 BasicCegarLoop]: 3394 mSDtfsCounter, 2922 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 6370 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.97ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.24ms IncrementalHoareTripleChecker+Time [2021-11-05 16:25:59,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2922 Valid, 6370 Invalid, 43 Unknown, 0 Unchecked, 7.97ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 55.24ms Time] [2021-11-05 16:25:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89576 states. [2021-11-05 16:26:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89576 to 88984. [2021-11-05 16:26:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88984 states, 81940 states have (on average 1.3374298267024651) internal successors, (109589), 82445 states have internal predecessors, (109589), 5088 states have call successors, (5088), 1944 states have call predecessors, (5088), 1944 states have return successors, (17062), 4674 states have call predecessors, (17062), 5088 states have call successors, (17062) [2021-11-05 16:26:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88984 states to 88984 states and 131739 transitions. [2021-11-05 16:26:02,143 INFO L78 Accepts]: Start accepts. Automaton has 88984 states and 131739 transitions. Word has length 49 [2021-11-05 16:26:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:26:02,144 INFO L470 AbstractCegarLoop]: Abstraction has 88984 states and 131739 transitions. [2021-11-05 16:26:02,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 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) [2021-11-05 16:26:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 88984 states and 131739 transitions. [2021-11-05 16:26:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 16:26:02,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:26:02,147 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, 1, 1, 1] [2021-11-05 16:26:02,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:26:02,147 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:26:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:26:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -35704334, now seen corresponding path program 1 times [2021-11-05 16:26:02,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:26:02,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818270970] [2021-11-05 16:26:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:26:02,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:26:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:26:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:26:02,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:26:02,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818270970] [2021-11-05 16:26:02,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818270970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:26:02,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:26:02,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:26:02,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59258150] [2021-11-05 16:26:02,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:26:02,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:26:02,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:26:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:26:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:26:02,381 INFO L87 Difference]: Start difference. First operand 88984 states and 131739 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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) [2021-11-05 16:26:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:26:06,174 INFO L93 Difference]: Finished difference Result 177918 states and 263424 transitions. [2021-11-05 16:26:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:26:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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 50 [2021-11-05 16:26:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:26:07,265 INFO L225 Difference]: With dead ends: 177918 [2021-11-05 16:26:07,265 INFO L226 Difference]: Without dead ends: 177828 [2021-11-05 16:26:07,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:26:07,369 INFO L933 BasicCegarLoop]: 3187 mSDtfsCounter, 2993 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.69ms IncrementalHoareTripleChecker+Time [2021-11-05 16:26:07,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2993 Valid, 6148 Invalid, 8 Unknown, 0 Unchecked, 7.35ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 10.69ms Time] [2021-11-05 16:26:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177828 states. [2021-11-05 16:26:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177828 to 177756. [2021-11-05 16:26:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177756 states, 163680 states have (on average 1.337689393939394) internal successors, (218953), 164681 states have internal predecessors, (218953), 10176 states have call successors, (10176), 3888 states have call predecessors, (10176), 3888 states have return successors, (34124), 9346 states have call predecessors, (34124), 10176 states have call successors, (34124) [2021-11-05 16:26:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177756 states to 177756 states and 263253 transitions. [2021-11-05 16:26:13,799 INFO L78 Accepts]: Start accepts. Automaton has 177756 states and 263253 transitions. Word has length 50 [2021-11-05 16:26:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:26:13,799 INFO L470 AbstractCegarLoop]: Abstraction has 177756 states and 263253 transitions. [2021-11-05 16:26:13,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 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) [2021-11-05 16:26:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 177756 states and 263253 transitions. [2021-11-05 16:26:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 16:26:13,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:26:13,804 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, 1, 1, 1, 1] [2021-11-05 16:26:13,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:26:13,805 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-05 16:26:13,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:26:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -4342093, now seen corresponding path program 1 times [2021-11-05 16:26:13,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:26:13,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451226092] [2021-11-05 16:26:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:26:13,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:26:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:26:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:26:14,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:26:14,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451226092] [2021-11-05 16:26:14,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451226092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:26:14,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:26:14,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:26:14,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074295977] [2021-11-05 16:26:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:26:14,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:26:14,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:26:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:26:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:26:14,001 INFO L87 Difference]: Start difference. First operand 177756 states and 263253 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)