./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 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G --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-dev-7e70bad [2021-11-23 13:33:02,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:33:02,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:33:02,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:33:02,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:33:02,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:33:02,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:33:02,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:33:02,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:33:02,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:33:02,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:33:02,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:33:02,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:33:02,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:33:02,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:33:02,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:33:02,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:33:02,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:33:02,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:33:02,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:33:02,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:33:02,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:33:02,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:33:02,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:33:02,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:33:02,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:33:02,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:33:02,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:33:02,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:33:02,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:33:02,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:33:02,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:33:02,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:33:02,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:33:02,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:33:02,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:33:02,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:33:02,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:33:02,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:33:02,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:33:02,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:33:02,453 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:33:02,481 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:33:02,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:33:02,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:33:02,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:33:02,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:33:02,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:33:02,484 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:33:02,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:33:02,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:33:02,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:33:02,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:33:02,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:33:02,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:33:02,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:33:02,486 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:33:02,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:33:02,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:33:02,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:33:02,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:33:02,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:33:02,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:33:02,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:33:02,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:33:02,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:33:02,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:33:02,489 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:33:02,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:33:02,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:33:02,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:33:02,489 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-11-23 13:33:02,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:33:02,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:33:02,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:33:02,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:33:02,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:33:02,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/../../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 [2021-11-23 13:33:02,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/data/c5b3cd379/c0452aee3f2b45b2a3ef4a409790feb3/FLAGea5e0e354 [2021-11-23 13:33:03,993 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:33:03,994 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/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 [2021-11-23 13:33:04,063 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/data/c5b3cd379/c0452aee3f2b45b2a3ef4a409790feb3/FLAGea5e0e354 [2021-11-23 13:33:04,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/data/c5b3cd379/c0452aee3f2b45b2a3ef4a409790feb3 [2021-11-23 13:33:04,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:33:04,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:33:04,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:33:04,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:33:04,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:33:04,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:33:04" (1/1) ... [2021-11-23 13:33:04,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5607165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:04, skipping insertion in model container [2021-11-23 13:33:04,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:33:04" (1/1) ... [2021-11-23 13:33:04,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:33:04,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:33:05,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/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] [2021-11-23 13:33:07,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:33:07,287 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:33:07,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/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] [2021-11-23 13:33:07,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:33:08,056 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:33:08,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08 WrapperNode [2021-11-23 13:33:08,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:33:08,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:33:08,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:33:08,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:33:08,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:08,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:08,673 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 596, calls inlined = 933, statements flattened = 12335 [2021-11-23 13:33:08,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:33:08,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:33:08,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:33:08,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:33:08,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:08,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:08,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:08,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:09,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:09,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:09,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:09,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:33:09,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:33:09,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:33:09,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:33:09,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (1/1) ... [2021-11-23 13:33:09,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:33:09,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:33:09,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:33:09,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e406cf0-3720-4e12-8ebd-02fa5bdf8ebe/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:33:09,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-23 13:33:09,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-23 13:33:09,363 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 13:33:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 13:33:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-23 13:33:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-23 13:33:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-23 13:33:09,364 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-23 13:33:09,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-23 13:33:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-23 13:33:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-23 13:33:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-23 13:33:09,365 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-23 13:33:09,365 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-23 13:33:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-23 13:33:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-23 13:33:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-23 13:33:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-23 13:33:09,366 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-23 13:33:09,366 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-23 13:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-23 13:33:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-23 13:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 13:33:09,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 13:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:33:09,367 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-23 13:33:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-23 13:33:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-11-23 13:33:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-11-23 13:33:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-23 13:33:09,368 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-23 13:33:09,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 13:33:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 13:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 13:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-23 13:33:09,369 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-23 13:33:09,369 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-23 13:33:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-23 13:33:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-11-23 13:33:09,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-11-23 13:33:09,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:33:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:33:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 13:33:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 13:33:09,371 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-23 13:33:09,371 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-23 13:33:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-23 13:33:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-23 13:33:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-23 13:33:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-23 13:33:09,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-11-23 13:33:09,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-11-23 13:33:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-23 13:33:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-23 13:33:09,373 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-23 13:33:09,373 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-23 13:33:09,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-23 13:33:09,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-23 13:33:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:33:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-23 13:33:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-23 13:33:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-23 13:33:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-23 13:33:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-11-23 13:33:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-11-23 13:33:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-11-23 13:33:09,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-11-23 13:33:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-23 13:33:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-23 13:33:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:33:09,378 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-23 13:33:09,378 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-23 13:33:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-23 13:33:09,379 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-23 13:33:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-11-23 13:33:09,379 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-11-23 13:33:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:33:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:33:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:33:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 13:33:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-11-23 13:33:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-11-23 13:33:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 13:33:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 13:33:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 13:33:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 13:33:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-23 13:33:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-23 13:33:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-23 13:33:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-23 13:33:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-23 13:33:09,382 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-23 13:33:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-23 13:33:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-23 13:33:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 13:33:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 13:33:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:33:09,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:33:09,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:33:10,512 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:33:10,516 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:33:22,140 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:33:22,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:33:22,180 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:33:22,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:33:22 BoogieIcfgContainer [2021-11-23 13:33:22,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:33:22,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:33:22,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:33:22,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:33:22,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:33:04" (1/3) ... [2021-11-23 13:33:22,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c229abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:33:22, skipping insertion in model container [2021-11-23 13:33:22,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:33:08" (2/3) ... [2021-11-23 13:33:22,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c229abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:33:22, skipping insertion in model container [2021-11-23 13:33:22,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:33:22" (3/3) ... [2021-11-23 13:33:22,197 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-23 13:33:22,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:33:22,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-23 13:33:22,286 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:33:22,301 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 [2021-11-23 13:33:22,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-23 13:33:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 2421 states, 2236 states have (on average 1.3640429338103757) internal successors, (3050), 2259 states have internal predecessors, (3050), 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) [2021-11-23 13:33:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:33:22,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:22,414 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] [2021-11-23 13:33:22,415 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)] === [2021-11-23 13:33:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1586645980, now seen corresponding path program 1 times [2021-11-23 13:33:22,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:22,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849435070] [2021-11-23 13:33:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:22,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:23,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849435070] [2021-11-23 13:33:23,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849435070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:23,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:23,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:33:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157484597] [2021-11-23 13:33:23,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:23,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:23,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:23,226 INFO L87 Difference]: Start difference. First operand has 2421 states, 2236 states have (on average 1.3640429338103757) internal successors, (3050), 2259 states have internal predecessors, (3050), 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) [2021-11-23 13:33:23,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:23,805 INFO L93 Difference]: Finished difference Result 7002 states and 9806 transitions. [2021-11-23 13:33:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:23,808 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 [2021-11-23 13:33:23,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:23,880 INFO L225 Difference]: With dead ends: 7002 [2021-11-23 13:33:23,880 INFO L226 Difference]: Without dead ends: 4547 [2021-11-23 13:33:23,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:23,919 INFO L933 BasicCegarLoop]: 3320 mSDtfsCounter, 2984 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:23,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2984 Valid, 6440 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:33:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4547 states. [2021-11-23 13:33:24,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4547 to 4535. [2021-11-23 13:33:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4179 states have (on average 1.323283082077052) internal successors, (5530), 4212 states have internal predecessors, (5530), 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) [2021-11-23 13:33:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6046 transitions. [2021-11-23 13:33:24,221 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6046 transitions. Word has length 36 [2021-11-23 13:33:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:24,223 INFO L470 AbstractCegarLoop]: Abstraction has 4535 states and 6046 transitions. [2021-11-23 13:33:24,223 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) [2021-11-23 13:33:24,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6046 transitions. [2021-11-23 13:33:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 13:33:24,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:24,240 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] [2021-11-23 13:33:24,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:33:24,241 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)] === [2021-11-23 13:33:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1886014802, now seen corresponding path program 1 times [2021-11-23 13:33:24,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25238065] [2021-11-23 13:33:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:24,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:24,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:24,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25238065] [2021-11-23 13:33:24,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25238065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:24,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:24,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:33:24,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437743816] [2021-11-23 13:33:24,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:24,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:24,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:24,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:24,550 INFO L87 Difference]: Start difference. First operand 4535 states and 6046 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) [2021-11-23 13:33:25,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:25,346 INFO L93 Difference]: Finished difference Result 12669 states and 16858 transitions. [2021-11-23 13:33:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:25,347 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 [2021-11-23 13:33:25,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:25,428 INFO L225 Difference]: With dead ends: 12669 [2021-11-23 13:33:25,428 INFO L226 Difference]: Without dead ends: 8211 [2021-11-23 13:33:25,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:25,457 INFO L933 BasicCegarLoop]: 3286 mSDtfsCounter, 2572 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 6258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:25,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2572 Valid, 6258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:33:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8211 states. [2021-11-23 13:33:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8211 to 8143. [2021-11-23 13:33:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8143 states, 7513 states have (on average 1.3211766271795555) internal successors, (9926), 7568 states have internal predecessors, (9926), 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) [2021-11-23 13:33:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8143 states to 8143 states and 10830 transitions. [2021-11-23 13:33:26,039 INFO L78 Accepts]: Start accepts. Automaton has 8143 states and 10830 transitions. Word has length 46 [2021-11-23 13:33:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:26,040 INFO L470 AbstractCegarLoop]: Abstraction has 8143 states and 10830 transitions. [2021-11-23 13:33:26,040 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) [2021-11-23 13:33:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 8143 states and 10830 transitions. [2021-11-23 13:33:26,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 13:33:26,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:26,049 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] [2021-11-23 13:33:26,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:33:26,050 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)] === [2021-11-23 13:33:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 301209627, now seen corresponding path program 1 times [2021-11-23 13:33:26,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:26,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608084093] [2021-11-23 13:33:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:26,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:26,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:26,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608084093] [2021-11-23 13:33:26,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608084093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:26,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:26,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:33:26,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546315394] [2021-11-23 13:33:26,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:26,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:26,486 INFO L87 Difference]: Start difference. First operand 8143 states and 10830 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) [2021-11-23 13:33:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:27,329 INFO L93 Difference]: Finished difference Result 24273 states and 33511 transitions. [2021-11-23 13:33:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:27,330 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 [2021-11-23 13:33:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:27,474 INFO L225 Difference]: With dead ends: 24273 [2021-11-23 13:33:27,474 INFO L226 Difference]: Without dead ends: 16207 [2021-11-23 13:33:27,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:27,544 INFO L933 BasicCegarLoop]: 3386 mSDtfsCounter, 3205 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:27,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 6436 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:33:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2021-11-23 13:33:28,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 16181. [2021-11-23 13:33:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16181 states, 14933 states have (on average 1.321234848992165) internal successors, (19730), 15032 states have internal predecessors, (19730), 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) [2021-11-23 13:33:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16181 states to 16181 states and 21960 transitions. [2021-11-23 13:33:28,455 INFO L78 Accepts]: Start accepts. Automaton has 16181 states and 21960 transitions. Word has length 47 [2021-11-23 13:33:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:28,455 INFO L470 AbstractCegarLoop]: Abstraction has 16181 states and 21960 transitions. [2021-11-23 13:33:28,456 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) [2021-11-23 13:33:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16181 states and 21960 transitions. [2021-11-23 13:33:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 13:33:28,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:28,461 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] [2021-11-23 13:33:28,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:33:28,462 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)] === [2021-11-23 13:33:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 747567752, now seen corresponding path program 1 times [2021-11-23 13:33:28,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:28,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697346790] [2021-11-23 13:33:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:28,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:28,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:28,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697346790] [2021-11-23 13:33:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697346790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:28,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:28,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:33:28,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103632331] [2021-11-23 13:33:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:28,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:28,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:28,709 INFO L87 Difference]: Start difference. First operand 16181 states and 21960 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) [2021-11-23 13:33:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:30,180 INFO L93 Difference]: Finished difference Result 48371 states and 69401 transitions. [2021-11-23 13:33:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:30,181 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 [2021-11-23 13:33:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:30,399 INFO L225 Difference]: With dead ends: 48371 [2021-11-23 13:33:30,399 INFO L226 Difference]: Without dead ends: 32267 [2021-11-23 13:33:30,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:30,527 INFO L933 BasicCegarLoop]: 3423 mSDtfsCounter, 3205 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 6490 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:30,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 6490 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:33:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32267 states. [2021-11-23 13:33:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32267 to 32242. [2021-11-23 13:33:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32242 states, 29758 states have (on average 1.3209221049801734) internal successors, (39308), 29945 states have internal predecessors, (39308), 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) [2021-11-23 13:33:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32242 states to 32242 states and 45106 transitions. [2021-11-23 13:33:32,603 INFO L78 Accepts]: Start accepts. Automaton has 32242 states and 45106 transitions. Word has length 48 [2021-11-23 13:33:32,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:32,604 INFO L470 AbstractCegarLoop]: Abstraction has 32242 states and 45106 transitions. [2021-11-23 13:33:32,605 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) [2021-11-23 13:33:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 32242 states and 45106 transitions. [2021-11-23 13:33:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 13:33:32,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:32,611 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] [2021-11-23 13:33:32,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:33:32,611 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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)] === [2021-11-23 13:33:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1142370613, now seen corresponding path program 1 times [2021-11-23 13:33:32,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:32,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110053932] [2021-11-23 13:33:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:32,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:32,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:32,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110053932] [2021-11-23 13:33:32,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110053932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:32,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:32,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:33:32,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108423419] [2021-11-23 13:33:32,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:32,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:32,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:32,910 INFO L87 Difference]: Start difference. First operand 32242 states and 45106 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) [2021-11-23 13:33:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:35,852 INFO L93 Difference]: Finished difference Result 95388 states and 136214 transitions. [2021-11-23 13:33:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:35,853 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 [2021-11-23 13:33:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:36,357 INFO L225 Difference]: With dead ends: 95388 [2021-11-23 13:33:36,357 INFO L226 Difference]: Without dead ends: 63223 [2021-11-23 13:33:36,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:36,738 INFO L933 BasicCegarLoop]: 3428 mSDtfsCounter, 3119 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:36,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3119 Valid, 6496 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:33:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63223 states. [2021-11-23 13:33:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63223 to 62978. [2021-11-23 13:33:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62978 states, 58222 states have (on average 1.3201882449933016) internal successors, (76864), 58537 states have internal predecessors, (76864), 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) [2021-11-23 13:33:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62978 states to 62978 states and 90920 transitions. [2021-11-23 13:33:40,659 INFO L78 Accepts]: Start accepts. Automaton has 62978 states and 90920 transitions. Word has length 51 [2021-11-23 13:33:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:40,660 INFO L470 AbstractCegarLoop]: Abstraction has 62978 states and 90920 transitions. [2021-11-23 13:33:40,660 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) [2021-11-23 13:33:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 62978 states and 90920 transitions. [2021-11-23 13:33:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 13:33:40,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:40,665 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] [2021-11-23 13:33:40,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:33:40,666 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:33:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1699767750, now seen corresponding path program 1 times [2021-11-23 13:33:40,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:40,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961098076] [2021-11-23 13:33:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:40,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:40,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:40,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961098076] [2021-11-23 13:33:40,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961098076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:40,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:40,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:33:40,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542285635] [2021-11-23 13:33:40,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:40,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:40,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:40,940 INFO L87 Difference]: Start difference. First operand 62978 states and 90920 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) [2021-11-23 13:33:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:43,046 INFO L93 Difference]: Finished difference Result 62997 states and 90931 transitions. [2021-11-23 13:33:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:43,047 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 [2021-11-23 13:33:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:43,381 INFO L225 Difference]: With dead ends: 62997 [2021-11-23 13:33:43,381 INFO L226 Difference]: Without dead ends: 62995 [2021-11-23 13:33:43,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:43,417 INFO L933 BasicCegarLoop]: 3418 mSDtfsCounter, 3202 mSDsluCounter, 3066 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 6484 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:43,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3202 Valid, 6484 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:33:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62995 states. [2021-11-23 13:33:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62995 to 62979. [2021-11-23 13:33:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62979 states, 58223 states have (on average 1.3201827456503443) internal successors, (76865), 58538 states have internal predecessors, (76865), 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) [2021-11-23 13:33:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62979 states to 62979 states and 90921 transitions. [2021-11-23 13:33:46,397 INFO L78 Accepts]: Start accepts. Automaton has 62979 states and 90921 transitions. Word has length 49 [2021-11-23 13:33:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:46,398 INFO L470 AbstractCegarLoop]: Abstraction has 62979 states and 90921 transitions. [2021-11-23 13:33:46,398 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) [2021-11-23 13:33:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 62979 states and 90921 transitions. [2021-11-23 13:33:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 13:33:46,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:46,402 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] [2021-11-23 13:33:46,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:33:46,402 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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)] === [2021-11-23 13:33:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1649008880, now seen corresponding path program 1 times [2021-11-23 13:33:46,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:46,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986281030] [2021-11-23 13:33:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:46,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:47,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:47,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986281030] [2021-11-23 13:33:47,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986281030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:47,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:47,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:33:47,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083453787] [2021-11-23 13:33:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:47,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:47,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:47,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:47,009 INFO L87 Difference]: Start difference. First operand 62979 states and 90921 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) [2021-11-23 13:33:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:33:51,325 INFO L93 Difference]: Finished difference Result 187359 states and 270415 transitions. [2021-11-23 13:33:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:33:51,326 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 51 [2021-11-23 13:33:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:33:52,083 INFO L225 Difference]: With dead ends: 187359 [2021-11-23 13:33:52,083 INFO L226 Difference]: Without dead ends: 124457 [2021-11-23 13:33:52,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:52,811 INFO L933 BasicCegarLoop]: 3910 mSDtfsCounter, 3034 mSDsluCounter, 3053 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 6963 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:33:52,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 6963 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:33:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124457 states. [2021-11-23 13:33:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124457 to 124291. [2021-11-23 13:33:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124291 states, 114855 states have (on average 1.3200731356928301) internal successors, (151617), 115474 states have internal predecessors, (151617), 6816 states have call successors, (6816), 2608 states have call predecessors, (6816), 2608 states have return successors, (20944), 6320 states have call predecessors, (20944), 6816 states have call successors, (20944) [2021-11-23 13:33:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124291 states to 124291 states and 179377 transitions. [2021-11-23 13:33:59,211 INFO L78 Accepts]: Start accepts. Automaton has 124291 states and 179377 transitions. Word has length 51 [2021-11-23 13:33:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:33:59,211 INFO L470 AbstractCegarLoop]: Abstraction has 124291 states and 179377 transitions. [2021-11-23 13:33:59,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-23 13:33:59,212 INFO L276 IsEmpty]: Start isEmpty. Operand 124291 states and 179377 transitions. [2021-11-23 13:33:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 13:33:59,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:33:59,214 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] [2021-11-23 13:33:59,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:33:59,215 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [usb_serial_device_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, usb_serial_device_removeErr0ASSERT_VIOLATIONERROR_FUNCTION, serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 13:33:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:33:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1153196627, now seen corresponding path program 1 times [2021-11-23 13:33:59,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:33:59,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291198474] [2021-11-23 13:33:59,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:33:59,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:33:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:33:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:33:59,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:33:59,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291198474] [2021-11-23 13:33:59,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291198474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:33:59,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:33:59,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:33:59,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628414845] [2021-11-23 13:33:59,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:33:59,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:33:59,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:33:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:33:59,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:33:59,442 INFO L87 Difference]: Start difference. First operand 124291 states and 179377 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) [2021-11-23 13:34:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:34:07,050 INFO L93 Difference]: Finished difference Result 309562 states and 458904 transitions. [2021-11-23 13:34:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:34:07,050 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 [2021-11-23 13:34:07,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:34:08,481 INFO L225 Difference]: With dead ends: 309562 [2021-11-23 13:34:08,481 INFO L226 Difference]: Without dead ends: 185348 [2021-11-23 13:34:09,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:34:09,640 INFO L933 BasicCegarLoop]: 3409 mSDtfsCounter, 3017 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3017 SdHoareTripleChecker+Valid, 6487 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:34:09,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3017 Valid, 6487 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:34:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185348 states.