./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:01:50,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:01:50,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:01:50,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:01:50,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:01:50,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:01:50,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:01:50,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:01:50,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:01:50,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:01:50,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:01:50,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:01:50,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:01:50,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:01:50,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:01:50,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:01:50,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:01:50,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:01:50,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:01:50,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:01:50,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:01:50,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:01:50,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:01:50,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:01:50,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:01:50,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:01:50,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:01:50,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:01:50,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:01:50,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:01:50,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:01:50,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:01:50,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:01:50,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:01:50,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:01:50,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:01:50,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:01:50,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:01:50,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:01:50,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:01:50,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:01:50,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:01:50,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:01:50,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:01:50,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:01:50,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:01:50,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:01:50,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:01:50,455 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:01:50,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:01:50,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:01:50,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:01:50,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:01:50,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:01:50,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:01:50,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:01:50,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:01:50,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:01:50,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:01:50,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:01:50,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:01:50,457 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:01:50,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:01:50,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:01:50,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:01:50,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf654a6a1eca45ac77a809162568fb8018795c05fa9eb6946186269d2e2c9c25 [2021-11-06 17:01:50,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:01:50,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:01:50,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:01:50,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:01:50,701 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:01:50,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-06 17:01:50,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ebcfe45/ab7f2582baca4bef96eb7a938abcd06d/FLAG75d850468 [2021-11-06 17:01:51,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:01:51,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-06 17:01:51,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ebcfe45/ab7f2582baca4bef96eb7a938abcd06d/FLAG75d850468 [2021-11-06 17:01:51,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33ebcfe45/ab7f2582baca4bef96eb7a938abcd06d [2021-11-06 17:01:51,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:01:51,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:01:51,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:01:51,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:01:51,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:01:51,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:01:51" (1/1) ... [2021-11-06 17:01:51,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90512d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:51, skipping insertion in model container [2021-11-06 17:01:51,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:01:51" (1/1) ... [2021-11-06 17:01:51,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:01:51,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:01:53,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-06 17:01:53,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:01:53,700 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:01:54,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[323188,323201] [2021-11-06 17:01:54,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:01:54,371 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:01:54,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54 WrapperNode [2021-11-06 17:01:54,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:01:54,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:01:54,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:01:54,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:01:54,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:54,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:54,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:01:54,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:01:54,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:01:54,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:01:54,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:54,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:01:55,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:01:55,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:01:55,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:01:55,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (1/1) ... [2021-11-06 17:01:55,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:01:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:01:55,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:01:55,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:01:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-06 17:01:55,765 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-06 17:01:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-06 17:01:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-06 17:01:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-06 17:01:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-06 17:01:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-06 17:01:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-06 17:01:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-06 17:01:55,766 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-06 17:01:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-06 17:01:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-06 17:01:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 17:01:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 17:01:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-06 17:01:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-06 17:01:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 17:01:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-06 17:01:55,767 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-06 17:01:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:01:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-06 17:01:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-06 17:01:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-06 17:01:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-06 17:01:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:01:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-06 17:01:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-06 17:01:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:01:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-06 17:01:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-06 17:01:55,768 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-06 17:01:55,768 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-06 17:01:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:01:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-06 17:01:55,769 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-06 17:01:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-06 17:01:55,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-06 17:01:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-06 17:01:55,769 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-06 17:01:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 17:01:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:01:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-06 17:01:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-06 17:01:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-06 17:01:55,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:01:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:01:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-06 17:01:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-06 17:01:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-06 17:01:55,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-06 17:01:55,771 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-06 17:01:55,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-06 17:01:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:01:55,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:01:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-06 17:01:55,773 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-06 17:01:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-06 17:01:55,773 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-06 17:01:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:01:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-06 17:01:55,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-06 17:01:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:01:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 17:01:55,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 17:01:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-06 17:01:55,774 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-06 17:01:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:01:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 17:01:55,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-06 17:01:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-06 17:01:55,775 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-06 17:01:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-06 17:01:55,775 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-06 17:01:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:01:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-06 17:01:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-06 17:01:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-06 17:01:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-06 17:01:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-06 17:01:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-06 17:01:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-06 17:01:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-06 17:01:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:01:55,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:01:55,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:02:29,265 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:02:29,266 INFO L299 CfgBuilder]: Removed 2331 assume(true) statements. [2021-11-06 17:02:29,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:02:29 BoogieIcfgContainer [2021-11-06 17:02:29,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:02:29,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:02:29,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:02:29,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:02:29,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:01:51" (1/3) ... [2021-11-06 17:02:29,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b93c154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:02:29, skipping insertion in model container [2021-11-06 17:02:29,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:01:54" (2/3) ... [2021-11-06 17:02:29,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b93c154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:02:29, skipping insertion in model container [2021-11-06 17:02:29,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:02:29" (3/3) ... [2021-11-06 17:02:29,282 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-06 17:02:29,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:02:29,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-06 17:02:29,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:02:29,352 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:02:29,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-06 17:02:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-06 17:02:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 17:02:29,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:29,423 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:29,424 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1101246796, now seen corresponding path program 1 times [2021-11-06 17:02:29,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:29,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567331343] [2021-11-06 17:02:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:29,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:30,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:30,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567331343] [2021-11-06 17:02:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567331343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:30,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:30,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:02:30,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326447497] [2021-11-06 17:02:30,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:02:30,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:02:30,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:02:30,384 INFO L87 Difference]: Start difference. First operand has 2747 states, 2544 states have (on average 1.39937106918239) internal successors, (3560), 2606 states have internal predecessors, (3560), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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) [2021-11-06 17:02:30,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:30,581 INFO L93 Difference]: Finished difference Result 5490 states and 7662 transitions. [2021-11-06 17:02:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:02:30,583 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 95 [2021-11-06 17:02:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:30,616 INFO L225 Difference]: With dead ends: 5490 [2021-11-06 17:02:30,617 INFO L226 Difference]: Without dead ends: 2732 [2021-11-06 17:02:30,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:02:30,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-11-06 17:02:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2021-11-06 17:02:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2530 states have (on average 1.3482213438735178) internal successors, (3411), 2591 states have internal predecessors, (3411), 112 states have call successors, (112), 37 states have call predecessors, (112), 37 states have return successors, (112), 105 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-06 17:02:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3635 transitions. [2021-11-06 17:02:30,782 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3635 transitions. Word has length 95 [2021-11-06 17:02:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:30,782 INFO L470 AbstractCegarLoop]: Abstraction has 2732 states and 3635 transitions. [2021-11-06 17:02:30,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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) [2021-11-06 17:02:30,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3635 transitions. [2021-11-06 17:02:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 17:02:30,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:30,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:30,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:02:30,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting serial_port_activateErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1092627974, now seen corresponding path program 1 times [2021-11-06 17:02:30,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:30,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934907564] [2021-11-06 17:02:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:30,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:31,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:31,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:31,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934907564] [2021-11-06 17:02:31,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934907564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:31,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:31,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:02:31,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140530452] [2021-11-06 17:02:31,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:31,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:31,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:31,388 INFO L87 Difference]: Start difference. First operand 2732 states and 3635 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-11-06 17:02:31,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:31,783 INFO L93 Difference]: Finished difference Result 7992 states and 10730 transitions. [2021-11-06 17:02:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:31,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 95 [2021-11-06 17:02:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:31,822 INFO L225 Difference]: With dead ends: 7992 [2021-11-06 17:02:31,822 INFO L226 Difference]: Without dead ends: 5344 [2021-11-06 17:02:31,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-11-06 17:02:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5200. [2021-11-06 17:02:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 4858 states have (on average 1.355290242898312) internal successors, (6584), 4926 states have internal predecessors, (6584), 215 states have call successors, (215), 74 states have call predecessors, (215), 74 states have return successors, (292), 203 states have call predecessors, (292), 215 states have call successors, (292) [2021-11-06 17:02:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7091 transitions. [2021-11-06 17:02:32,014 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7091 transitions. Word has length 95 [2021-11-06 17:02:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:32,016 INFO L470 AbstractCegarLoop]: Abstraction has 5200 states and 7091 transitions. [2021-11-06 17:02:32,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-11-06 17:02:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7091 transitions. [2021-11-06 17:02:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 17:02:32,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:32,019 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:32,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:02:32,020 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -68543981, now seen corresponding path program 1 times [2021-11-06 17:02:32,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:32,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300267608] [2021-11-06 17:02:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:32,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:32,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:32,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300267608] [2021-11-06 17:02:32,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300267608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:32,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:32,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:02:32,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340000569] [2021-11-06 17:02:32,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:32,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:32,697 INFO L87 Difference]: Start difference. First operand 5200 states and 7091 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:33,259 INFO L93 Difference]: Finished difference Result 14415 states and 19623 transitions. [2021-11-06 17:02:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:33,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2021-11-06 17:02:33,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:33,314 INFO L225 Difference]: With dead ends: 14415 [2021-11-06 17:02:33,314 INFO L226 Difference]: Without dead ends: 9299 [2021-11-06 17:02:33,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2021-11-06 17:02:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 9136. [2021-11-06 17:02:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9136 states, 8582 states have (on average 1.3556280587275693) internal successors, (11634), 8664 states have internal predecessors, (11634), 362 states have call successors, (362), 139 states have call predecessors, (362), 139 states have return successors, (500), 339 states have call predecessors, (500), 362 states have call successors, (500) [2021-11-06 17:02:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 12496 transitions. [2021-11-06 17:02:33,638 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 12496 transitions. Word has length 98 [2021-11-06 17:02:33,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:33,644 INFO L470 AbstractCegarLoop]: Abstraction has 9136 states and 12496 transitions. [2021-11-06 17:02:33,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 12496 transitions. [2021-11-06 17:02:33,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 17:02:33,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:33,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:33,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:02:33,650 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1351220361, now seen corresponding path program 1 times [2021-11-06 17:02:33,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:33,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764161042] [2021-11-06 17:02:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:33,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:34,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:34,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764161042] [2021-11-06 17:02:34,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764161042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:34,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:34,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:02:34,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043858018] [2021-11-06 17:02:34,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:34,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:34,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:34,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:34,113 INFO L87 Difference]: Start difference. First operand 9136 states and 12496 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-06 17:02:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:34,665 INFO L93 Difference]: Finished difference Result 26232 states and 36121 transitions. [2021-11-06 17:02:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 103 [2021-11-06 17:02:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:34,783 INFO L225 Difference]: With dead ends: 26232 [2021-11-06 17:02:34,783 INFO L226 Difference]: Without dead ends: 17180 [2021-11-06 17:02:34,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:34,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17180 states. [2021-11-06 17:02:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17180 to 16956. [2021-11-06 17:02:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16956 states, 15945 states have (on average 1.359799310128567) internal successors, (21682), 16049 states have internal predecessors, (21682), 688 states have call successors, (688), 266 states have call predecessors, (688), 270 states have return successors, (1148), 654 states have call predecessors, (1148), 688 states have call successors, (1148) [2021-11-06 17:02:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16956 states to 16956 states and 23518 transitions. [2021-11-06 17:02:35,379 INFO L78 Accepts]: Start accepts. Automaton has 16956 states and 23518 transitions. Word has length 103 [2021-11-06 17:02:35,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:35,381 INFO L470 AbstractCegarLoop]: Abstraction has 16956 states and 23518 transitions. [2021-11-06 17:02:35,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-06 17:02:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 16956 states and 23518 transitions. [2021-11-06 17:02:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 17:02:35,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:35,383 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:02:35,384 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1042989265, now seen corresponding path program 1 times [2021-11-06 17:02:35,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:35,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28228696] [2021-11-06 17:02:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:35,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:35,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:35,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28228696] [2021-11-06 17:02:35,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28228696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:35,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:35,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:02:35,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984640071] [2021-11-06 17:02:35,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:35,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:35,880 INFO L87 Difference]: Start difference. First operand 16956 states and 23518 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:38,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:38,922 INFO L93 Difference]: Finished difference Result 49737 states and 69174 transitions. [2021-11-06 17:02:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-06 17:02:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:39,108 INFO L225 Difference]: With dead ends: 49737 [2021-11-06 17:02:39,109 INFO L226 Difference]: Without dead ends: 32865 [2021-11-06 17:02:39,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:39,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32865 states. [2021-11-06 17:02:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32865 to 32781. [2021-11-06 17:02:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32781 states, 30812 states have (on average 1.3635596520836037) internal successors, (42014), 30968 states have internal predecessors, (42014), 1376 states have call successors, (1376), 532 states have call predecessors, (1376), 540 states have return successors, (2296), 1308 states have call predecessors, (2296), 1376 states have call successors, (2296) [2021-11-06 17:02:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32781 states to 32781 states and 45686 transitions. [2021-11-06 17:02:40,228 INFO L78 Accepts]: Start accepts. Automaton has 32781 states and 45686 transitions. Word has length 103 [2021-11-06 17:02:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:40,228 INFO L470 AbstractCegarLoop]: Abstraction has 32781 states and 45686 transitions. [2021-11-06 17:02:40,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 32781 states and 45686 transitions. [2021-11-06 17:02:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 17:02:40,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:40,232 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:40,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:02:40,232 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:40,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash -480392852, now seen corresponding path program 1 times [2021-11-06 17:02:40,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:40,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804366678] [2021-11-06 17:02:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:40,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:40,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:40,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804366678] [2021-11-06 17:02:40,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804366678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:40,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:40,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:02:40,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557972837] [2021-11-06 17:02:40,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:40,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:40,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:40,710 INFO L87 Difference]: Start difference. First operand 32781 states and 45686 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:42,650 INFO L93 Difference]: Finished difference Result 94753 states and 134594 transitions. [2021-11-06 17:02:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 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 110 [2021-11-06 17:02:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:43,018 INFO L225 Difference]: With dead ends: 94753 [2021-11-06 17:02:43,018 INFO L226 Difference]: Without dead ends: 62056 [2021-11-06 17:02:43,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2021-11-06 17:02:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 61795. [2021-11-06 17:02:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61795 states, 58056 states have (on average 1.3647857241284278) internal successors, (79234), 58374 states have internal predecessors, (79234), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-06 17:02:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61795 states to 61795 states and 87556 transitions. [2021-11-06 17:02:46,059 INFO L78 Accepts]: Start accepts. Automaton has 61795 states and 87556 transitions. Word has length 110 [2021-11-06 17:02:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:46,060 INFO L470 AbstractCegarLoop]: Abstraction has 61795 states and 87556 transitions. [2021-11-06 17:02:46,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 61795 states and 87556 transitions. [2021-11-06 17:02:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-06 17:02:46,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:46,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:46,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:02:46,066 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2007263563, now seen corresponding path program 1 times [2021-11-06 17:02:46,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:46,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714780902] [2021-11-06 17:02:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:46,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:46,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:46,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714780902] [2021-11-06 17:02:46,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714780902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:46,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:46,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:02:46,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155895545] [2021-11-06 17:02:46,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:46,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:46,648 INFO L87 Difference]: Start difference. First operand 61795 states and 87556 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:47,799 INFO L93 Difference]: Finished difference Result 61795 states and 87556 transitions. [2021-11-06 17:02:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 111 [2021-11-06 17:02:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:48,153 INFO L225 Difference]: With dead ends: 61795 [2021-11-06 17:02:48,153 INFO L226 Difference]: Without dead ends: 61793 [2021-11-06 17:02:48,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61793 states. [2021-11-06 17:02:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61793 to 61793. [2021-11-06 17:02:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61793 states, 58055 states have (on average 1.3647747825338041) internal successors, (79232), 58372 states have internal predecessors, (79232), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-06 17:02:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61793 states to 61793 states and 87554 transitions. [2021-11-06 17:02:50,451 INFO L78 Accepts]: Start accepts. Automaton has 61793 states and 87554 transitions. Word has length 111 [2021-11-06 17:02:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:50,452 INFO L470 AbstractCegarLoop]: Abstraction has 61793 states and 87554 transitions. [2021-11-06 17:02:50,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 61793 states and 87554 transitions. [2021-11-06 17:02:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 17:02:50,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:50,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:50,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:02:50,455 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2095615338, now seen corresponding path program 1 times [2021-11-06 17:02:50,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:50,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12103298] [2021-11-06 17:02:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:50,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:50,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:50,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12103298] [2021-11-06 17:02:50,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12103298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:50,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:50,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:02:50,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095052368] [2021-11-06 17:02:50,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:50,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:50,889 INFO L87 Difference]: Start difference. First operand 61793 states and 87554 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:52,371 INFO L93 Difference]: Finished difference Result 61793 states and 87554 transitions. [2021-11-06 17:02:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:52,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 112 [2021-11-06 17:02:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:52,658 INFO L225 Difference]: With dead ends: 61793 [2021-11-06 17:02:52,662 INFO L226 Difference]: Without dead ends: 61791 [2021-11-06 17:02:52,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61791 states. [2021-11-06 17:02:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61791 to 61791. [2021-11-06 17:02:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61791 states, 58054 states have (on average 1.364763840562235) internal successors, (79230), 58370 states have internal predecessors, (79230), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-06 17:02:54,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61791 states to 61791 states and 87552 transitions. [2021-11-06 17:02:54,716 INFO L78 Accepts]: Start accepts. Automaton has 61791 states and 87552 transitions. Word has length 112 [2021-11-06 17:02:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:54,716 INFO L470 AbstractCegarLoop]: Abstraction has 61791 states and 87552 transitions. [2021-11-06 17:02:54,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 61791 states and 87552 transitions. [2021-11-06 17:02:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 17:02:54,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:54,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:54,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:02:54,720 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash -539553057, now seen corresponding path program 1 times [2021-11-06 17:02:54,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:54,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115738690] [2021-11-06 17:02:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:54,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:55,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:55,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115738690] [2021-11-06 17:02:55,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115738690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:55,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:55,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:02:55,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848417816] [2021-11-06 17:02:55,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:55,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:55,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:55,371 INFO L87 Difference]: Start difference. First operand 61791 states and 87552 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:02:56,733 INFO L93 Difference]: Finished difference Result 61791 states and 87552 transitions. [2021-11-06 17:02:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:02:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 113 [2021-11-06 17:02:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:02:57,028 INFO L225 Difference]: With dead ends: 61791 [2021-11-06 17:02:57,029 INFO L226 Difference]: Without dead ends: 61789 [2021-11-06 17:02:57,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61789 states. [2021-11-06 17:02:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61789 to 61789. [2021-11-06 17:02:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61789 states, 58053 states have (on average 1.3647528982137014) internal successors, (79228), 58368 states have internal predecessors, (79228), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-06 17:02:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61789 states to 61789 states and 87550 transitions. [2021-11-06 17:02:59,153 INFO L78 Accepts]: Start accepts. Automaton has 61789 states and 87550 transitions. Word has length 113 [2021-11-06 17:02:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:02:59,154 INFO L470 AbstractCegarLoop]: Abstraction has 61789 states and 87550 transitions. [2021-11-06 17:02:59,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:02:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 61789 states and 87550 transitions. [2021-11-06 17:02:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 17:02:59,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:02:59,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:02:59,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 17:02:59,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:02:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:02:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash 453737408, now seen corresponding path program 1 times [2021-11-06 17:02:59,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:02:59,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266400469] [2021-11-06 17:02:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:02:59,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:02:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:02:59,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:02:59,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:02:59,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266400469] [2021-11-06 17:02:59,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266400469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:02:59,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:02:59,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:02:59,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583640810] [2021-11-06 17:02:59,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:02:59,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:02:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:02:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:02:59,591 INFO L87 Difference]: Start difference. First operand 61789 states and 87550 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:03:01,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:03:01,199 INFO L93 Difference]: Finished difference Result 61789 states and 87550 transitions. [2021-11-06 17:03:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:03:01,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 114 [2021-11-06 17:03:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:03:01,442 INFO L225 Difference]: With dead ends: 61789 [2021-11-06 17:03:01,442 INFO L226 Difference]: Without dead ends: 61752 [2021-11-06 17:03:01,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:03:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61752 states. [2021-11-06 17:03:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61752 to 61752. [2021-11-06 17:03:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61752 states, 58028 states have (on average 1.3610498380092368) internal successors, (78979), 58331 states have internal predecessors, (78979), 2638 states have call successors, (2638), 1058 states have call predecessors, (2638), 1048 states have return successors, (5684), 2418 states have call predecessors, (5684), 2638 states have call successors, (5684) [2021-11-06 17:03:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61752 states to 61752 states and 87301 transitions. [2021-11-06 17:03:03,529 INFO L78 Accepts]: Start accepts. Automaton has 61752 states and 87301 transitions. Word has length 114 [2021-11-06 17:03:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:03:03,529 INFO L470 AbstractCegarLoop]: Abstraction has 61752 states and 87301 transitions. [2021-11-06 17:03:03,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:03:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 61752 states and 87301 transitions. [2021-11-06 17:03:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 17:03:03,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:03:03,536 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:03:03,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 17:03:03,537 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting serial_port_activateErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:03:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:03:03,538 INFO L85 PathProgramCache]: Analyzing trace with hash -628065741, now seen corresponding path program 1 times [2021-11-06 17:03:03,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:03:03,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138675424] [2021-11-06 17:03:03,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:03:03,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:03:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:03:03,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-06 17:03:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:03:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:03:04,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:03:04,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138675424] [2021-11-06 17:03:04,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138675424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:03:04,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:03:04,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:03:04,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681763858] [2021-11-06 17:03:04,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:03:04,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:03:04,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:03:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:03:04,026 INFO L87 Difference]: Start difference. First operand 61752 states and 87301 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:03:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:03:24,237 INFO L93 Difference]: Finished difference Result 193710 states and 274953 transitions. [2021-11-06 17:03:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:03:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2021-11-06 17:03:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:03:25,076 INFO L225 Difference]: With dead ends: 193710 [2021-11-06 17:03:25,076 INFO L226 Difference]: Without dead ends: 132042 [2021-11-06 17:03:25,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:03:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132042 states. [2021-11-06 17:03:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132042 to 128678. [2021-11-06 17:03:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128678 states, 120512 states have (on average 1.3565537041954328) internal successors, (163481), 121163 states have internal predecessors, (163481), 5340 states have call successors, (5340), 2116 states have call predecessors, (5340), 2788 states have return successors, (14288), 5558 states have call predecessors, (14288), 5340 states have call successors, (14288) [2021-11-06 17:03:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128678 states to 128678 states and 183109 transitions. [2021-11-06 17:03:30,197 INFO L78 Accepts]: Start accepts. Automaton has 128678 states and 183109 transitions. Word has length 142 [2021-11-06 17:03:30,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:03:30,198 INFO L470 AbstractCegarLoop]: Abstraction has 128678 states and 183109 transitions. [2021-11-06 17:03:30,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 17:03:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 128678 states and 183109 transitions. [2021-11-06 17:03:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 17:03:30,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:03:30,203 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:03:30,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 17:03:30,203 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting usb_serial_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:03:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:03:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1956909992, now seen corresponding path program 1 times [2021-11-06 17:03:30,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:03:30,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568203694] [2021-11-06 17:03:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:03:30,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:03:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:03:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:03:30,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:03:30,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568203694] [2021-11-06 17:03:30,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568203694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:03:30,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:03:30,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:03:30,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688081726] [2021-11-06 17:03:30,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:03:30,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:03:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:03:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:03:30,677 INFO L87 Difference]: Start difference. First operand 128678 states and 183109 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-06 17:03:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:03:33,782 INFO L93 Difference]: Finished difference Result 195053 states and 277278 transitions. [2021-11-06 17:03:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:03:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 153 [2021-11-06 17:03:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:03:34,039 INFO L225 Difference]: With dead ends: 195053 [2021-11-06 17:03:34,039 INFO L226 Difference]: Without dead ends: 66459 [2021-11-06 17:03:34,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:03:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66459 states. [2021-11-06 17:03:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66459 to 64165. [2021-11-06 17:03:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64165 states, 60052 states have (on average 1.3571404782521814) internal successors, (81499), 60393 states have internal predecessors, (81499), 2676 states have call successors, (2676), 1063 states have call predecessors, (2676), 1399 states have return successors, (7150), 2788 states have call predecessors, (7150), 2676 states have call successors, (7150) [2021-11-06 17:03:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64165 states to 64165 states and 91325 transitions. [2021-11-06 17:03:36,882 INFO L78 Accepts]: Start accepts. Automaton has 64165 states and 91325 transitions. Word has length 153 [2021-11-06 17:03:36,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:03:36,883 INFO L470 AbstractCegarLoop]: Abstraction has 64165 states and 91325 transitions. [2021-11-06 17:03:36,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2021-11-06 17:03:36,883 INFO L276 IsEmpty]: Start isEmpty. Operand 64165 states and 91325 transitions. [2021-11-06 17:03:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 17:03:36,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:03:36,887 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:03:36,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 17:03:36,887 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~VOIDErr1ASSERT_VIOLATIONERROR_FUNCTION, serial_wait_until_sentErr0ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 17:03:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:03:36,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1925289297, now seen corresponding path program 1 times [2021-11-06 17:03:36,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:03:36,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327023679] [2021-11-06 17:03:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:03:36,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:03:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:03:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:03:37,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:03:37,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327023679] [2021-11-06 17:03:37,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327023679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:03:37,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:03:37,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:03:37,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127892352] [2021-11-06 17:03:37,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:03:37,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:03:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:03:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:03:37,584 INFO L87 Difference]: Start difference. First operand 64165 states and 91325 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:03:41,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:03:41,236 INFO L93 Difference]: Finished difference Result 64165 states and 91325 transitions. [2021-11-06 17:03:41,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:03:41,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 153 [2021-11-06 17:03:41,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:03:41,450 INFO L225 Difference]: With dead ends: 64165 [2021-11-06 17:03:41,450 INFO L226 Difference]: Without dead ends: 64117 [2021-11-06 17:03:41,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:03:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64117 states.