./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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-08_1a-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 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 20:47:12,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 20:47:12,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 20:47:12,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 20:47:12,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 20:47:12,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 20:47:12,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 20:47:12,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 20:47:12,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 20:47:12,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 20:47:12,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 20:47:12,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 20:47:12,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 20:47:12,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 20:47:12,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 20:47:12,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 20:47:12,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 20:47:12,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 20:47:12,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 20:47:12,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 20:47:12,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 20:47:12,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 20:47:12,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 20:47:12,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 20:47:12,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 20:47:12,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 20:47:12,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 20:47:12,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 20:47:12,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 20:47:12,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 20:47:12,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 20:47:12,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 20:47:12,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 20:47:12,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 20:47:12,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 20:47:12,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 20:47:12,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 20:47:12,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 20:47:12,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 20:47:12,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 20:47:12,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 20:47:12,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 20:47:12,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 20:47:12,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 20:47:12,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 20:47:12,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 20:47:12,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 20:47:12,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 20:47:12,556 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 20:47:12,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 20:47:12,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 20:47:12,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 20:47:12,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 20:47:12,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 20:47:12,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 20:47:12,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 20:47:12,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 20:47:12,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 20:47:12,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 20:47:12,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 20:47:12,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:47:12,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 20:47:12,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 20:47:12,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 20:47:12,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 20:47:12,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 267df3d840ee451a69f2c9c23fc4c286b307e31eb8c416518f7dce9b4c82858a [2021-11-02 20:47:12,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 20:47:12,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 20:47:12,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 20:47:12,775 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 20:47:12,776 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 20:47:12,777 INFO L432 ainManager$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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-02 20:47:12,823 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1105d271/1076f2b210e5474db89ea981b64257bc/FLAG0e95be6e6 [2021-11-02 20:47:13,546 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 20:47:13,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-02 20:47:13,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1105d271/1076f2b210e5474db89ea981b64257bc/FLAG0e95be6e6 [2021-11-02 20:47:13,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1105d271/1076f2b210e5474db89ea981b64257bc [2021-11-02 20:47:13,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 20:47:13,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 20:47:13,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 20:47:13,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 20:47:13,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 20:47:13,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:13" (1/1) ... [2021-11-02 20:47:13,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ada4eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:13, skipping insertion in model container [2021-11-02 20:47:13,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:13" (1/1) ... [2021-11-02 20:47:13,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 20:47:13,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 20:47:15,960 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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-02 20:47:16,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:47:16,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 20:47:16,424 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-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[313744,313757] [2021-11-02 20:47:16,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 20:47:16,571 INFO L208 MainTranslator]: Completed translation [2021-11-02 20:47:16,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16 WrapperNode [2021-11-02 20:47:16,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 20:47:16,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 20:47:16,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 20:47:16,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 20:47:16,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:16,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:16,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 20:47:16,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 20:47:16,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 20:47:16,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 20:47:16,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:16,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 20:47:17,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 20:47:17,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 20:47:17,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 20:47:17,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (1/1) ... [2021-11-02 20:47:17,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 20:47:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 20:47:17,645 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) [2021-11-02 20:47:17,683 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 [2021-11-02 20:47:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-11-02 20:47:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-11-02 20:47:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-11-02 20:47:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-11-02 20:47:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-11-02 20:47:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-11-02 20:47:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-11-02 20:47:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-11-02 20:47:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-11-02 20:47:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-11-02 20:47:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-02 20:47:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-11-02 20:47:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-11-02 20:47:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 20:47:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-11-02 20:47:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-11-02 20:47:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-11-02 20:47:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-11-02 20:47:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-11-02 20:47:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-11-02 20:47:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-11-02 20:47:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-02 20:47:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-11-02 20:47:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-02 20:47:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-02 20:47:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 20:47:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 20:47:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 20:47:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:47:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 20:47:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 20:47:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 20:47:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-11-02 20:47:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-11-02 20:47:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-11-02 20:47:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-11-02 20:47:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 20:47:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 20:47:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-11-02 20:47:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-11-02 20:47:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-02 20:47:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-02 20:47:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-02 20:47:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-02 20:47:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 20:47:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 20:47:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-11-02 20:47:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-11-02 20:47:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-11-02 20:47:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-11-02 20:47:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 20:47:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-11-02 20:47:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-11-02 20:47:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 20:47:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 20:47:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 20:47:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-11-02 20:47:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-11-02 20:47:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 20:47:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 20:47:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 20:47:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-11-02 20:47:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-11-02 20:47:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-11-02 20:47:17,739 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-11-02 20:47:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 20:47:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-11-02 20:47:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-11-02 20:47:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-11-02 20:47:17,740 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-11-02 20:47:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-11-02 20:47:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-11-02 20:47:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-11-02 20:47:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-11-02 20:47:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 20:47:17,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 20:47:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 20:47:41,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 20:47:41,177 INFO L299 CfgBuilder]: Removed 2091 assume(true) statements. [2021-11-02 20:47:41,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:41 BoogieIcfgContainer [2021-11-02 20:47:41,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 20:47:41,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 20:47:41,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 20:47:41,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 20:47:41,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:13" (1/3) ... [2021-11-02 20:47:41,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402b029e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:41, skipping insertion in model container [2021-11-02 20:47:41,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:16" (2/3) ... [2021-11-02 20:47:41,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402b029e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:41, skipping insertion in model container [2021-11-02 20:47:41,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:41" (3/3) ... [2021-11-02 20:47:41,188 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-11-02 20:47:41,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 20:47:41,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-02 20:47:41,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 20:47:41,246 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 [2021-11-02 20:47:41,246 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-02 20:47:41,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 2561 states, 2400 states have (on average 1.3958333333333333) internal successors, (3350), 2420 states have internal predecessors, (3350), 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) [2021-11-02 20:47:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 20:47:41,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:47:41,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:47:41,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:47:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:47:41,318 INFO L85 PathProgramCache]: Analyzing trace with hash -446975168, now seen corresponding path program 1 times [2021-11-02 20:47:41,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:47:41,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369063761] [2021-11-02 20:47:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:47:41,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:47:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:47:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:47:42,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:47:42,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369063761] [2021-11-02 20:47:42,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369063761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:47:42,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:47:42,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:47:42,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109858526] [2021-11-02 20:47:42,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 20:47:42,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:47:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 20:47:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:47:42,264 INFO L87 Difference]: Start difference. First operand has 2561 states, 2400 states have (on average 1.3958333333333333) internal successors, (3350), 2420 states have internal predecessors, (3350), 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 55.0) 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) [2021-11-02 20:47:44,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:47:57,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:48:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:48:13,755 INFO L93 Difference]: Finished difference Result 5118 states and 7222 transitions. [2021-11-02 20:48:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 20:48:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) 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 [2021-11-02 20:48:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:48:13,809 INFO L225 Difference]: With dead ends: 5118 [2021-11-02 20:48:13,810 INFO L226 Difference]: Without dead ends: 2546 [2021-11-02 20:48:13,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 20:48:13,828 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3256 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28584.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3256 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30933.15ms IncrementalHoareTripleChecker+Time [2021-11-02 20:48:13,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 3258 Unknown, 0 Unchecked, 39.06ms Time], IncrementalHoareTripleChecker [0 Valid, 3256 Invalid, 2 Unknown, 0 Unchecked, 30933.15ms Time] [2021-11-02 20:48:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-11-02 20:48:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2021-11-02 20:48:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2386 states have (on average 1.359178541492037) internal successors, (3243), 2405 states have internal predecessors, (3243), 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) [2021-11-02 20:48:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3467 transitions. [2021-11-02 20:48:13,938 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3467 transitions. Word has length 110 [2021-11-02 20:48:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:48:13,938 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 3467 transitions. [2021-11-02 20:48:13,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) 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) [2021-11-02 20:48:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3467 transitions. [2021-11-02 20:48:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 20:48:13,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:48:13,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:48:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 20:48:13,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:48:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:48:13,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1434476754, now seen corresponding path program 1 times [2021-11-02 20:48:13,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:48:13,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078340268] [2021-11-02 20:48:13,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:48:13,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:48:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:48:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 20:48:14,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:48:14,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078340268] [2021-11-02 20:48:14,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078340268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:48:14,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:48:14,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:48:14,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907029059] [2021-11-02 20:48:14,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:48:14,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:48:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:48:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:48:14,581 INFO L87 Difference]: Start difference. First operand 2546 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2021-11-02 20:48:16,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:48:36,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:49:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:49:07,478 INFO L93 Difference]: Finished difference Result 5048 states and 6893 transitions. [2021-11-02 20:49:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:49:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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 [2021-11-02 20:49:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:49:07,492 INFO L225 Difference]: With dead ends: 5048 [2021-11-02 20:49:07,493 INFO L226 Difference]: Without dead ends: 2550 [2021-11-02 20:49:07,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:49:07,504 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 6478 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49861.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.13ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6478 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52391.23ms IncrementalHoareTripleChecker+Time [2021-11-02 20:49:07,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6486 Unknown, 0 Unchecked, 73.13ms Time], IncrementalHoareTripleChecker [6 Valid, 6478 Invalid, 2 Unknown, 0 Unchecked, 52391.23ms Time] [2021-11-02 20:49:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-11-02 20:49:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2550. [2021-11-02 20:49:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2390 states have (on average 1.3585774058577407) internal successors, (3247), 2409 states have internal predecessors, (3247), 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) [2021-11-02 20:49:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3471 transitions. [2021-11-02 20:49:07,566 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3471 transitions. Word has length 110 [2021-11-02 20:49:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:49:07,567 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3471 transitions. [2021-11-02 20:49:07,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2021-11-02 20:49:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3471 transitions. [2021-11-02 20:49:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 20:49:07,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:49:07,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:49:07,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 20:49:07,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:49:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:49:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash -168136524, now seen corresponding path program 1 times [2021-11-02 20:49:07,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:49:07,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26803037] [2021-11-02 20:49:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:49:07,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:49:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:49:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 20:49:08,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:49:08,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26803037] [2021-11-02 20:49:08,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26803037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:49:08,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:49:08,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:49:08,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151461479] [2021-11-02 20:49:08,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:49:08,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:49:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:49:08,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:49:08,021 INFO L87 Difference]: Start difference. First operand 2550 states and 3471 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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) [2021-11-02 20:49:10,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:49:32,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:50:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:50:05,184 INFO L93 Difference]: Finished difference Result 5057 states and 6906 transitions. [2021-11-02 20:50:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:50:05,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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 [2021-11-02 20:50:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:50:05,197 INFO L225 Difference]: With dead ends: 5057 [2021-11-02 20:50:05,198 INFO L226 Difference]: Without dead ends: 2559 [2021-11-02 20:50:05,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.40ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:50:05,209 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 6473 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54049.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.95ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6473 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56767.34ms IncrementalHoareTripleChecker+Time [2021-11-02 20:50:05,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 448 Invalid, 6491 Unknown, 0 Unchecked, 54.95ms Time], IncrementalHoareTripleChecker [16 Valid, 6473 Invalid, 2 Unknown, 0 Unchecked, 56767.34ms Time] [2021-11-02 20:50:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2021-11-02 20:50:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2559. [2021-11-02 20:50:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2399 states have (on average 1.3572321800750313) internal successors, (3256), 2418 states have internal predecessors, (3256), 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) [2021-11-02 20:50:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3480 transitions. [2021-11-02 20:50:05,269 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3480 transitions. Word has length 113 [2021-11-02 20:50:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:50:05,269 INFO L470 AbstractCegarLoop]: Abstraction has 2559 states and 3480 transitions. [2021-11-02 20:50:05,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 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) [2021-11-02 20:50:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3480 transitions. [2021-11-02 20:50:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 20:50:05,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:50:05,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:50:05,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:50:05,275 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:50:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:50:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1807943902, now seen corresponding path program 1 times [2021-11-02 20:50:05,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:50:05,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038729695] [2021-11-02 20:50:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:50:05,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:50:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:50:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:50:05,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:50:05,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038729695] [2021-11-02 20:50:05,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038729695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:50:05,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:50:05,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:50:05,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500359870] [2021-11-02 20:50:05,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:50:05,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:50:05,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:50:05,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:50:05,729 INFO L87 Difference]: Start difference. First operand 2559 states and 3480 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-02 20:50:07,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:50:22,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:51:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:51:08,420 INFO L93 Difference]: Finished difference Result 7280 states and 9975 transitions. [2021-11-02 20:51:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:51:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2021-11-02 20:51:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:51:08,443 INFO L225 Difference]: With dead ends: 7280 [2021-11-02 20:51:08,443 INFO L226 Difference]: Without dead ends: 4817 [2021-11-02 20:51:08,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:51:08,456 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 3124 mSDsluCounter, 3436 mSDsCounter, 0 mSdLazyCounter, 6461 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58545.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3124 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 6466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6461 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62043.94ms IncrementalHoareTripleChecker+Time [2021-11-02 20:51:08,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3124 Valid, 560 Invalid, 6466 Unknown, 0 Unchecked, 80.18ms Time], IncrementalHoareTripleChecker [3 Valid, 6461 Invalid, 2 Unknown, 0 Unchecked, 62043.94ms Time] [2021-11-02 20:51:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4817 states. [2021-11-02 20:51:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4817 to 4797. [2021-11-02 20:51:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 4488 states have (on average 1.3685383244206775) internal successors, (6142), 4516 states have internal predecessors, (6142), 224 states have call successors, (224), 74 states have call predecessors, (224), 74 states have return successors, (224), 210 states have call predecessors, (224), 224 states have call successors, (224) [2021-11-02 20:51:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 6590 transitions. [2021-11-02 20:51:08,567 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 6590 transitions. Word has length 122 [2021-11-02 20:51:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:51:08,568 INFO L470 AbstractCegarLoop]: Abstraction has 4797 states and 6590 transitions. [2021-11-02 20:51:08,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-02 20:51:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 6590 transitions. [2021-11-02 20:51:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 20:51:08,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:51:08,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:51:08,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:51:08,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:51:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:51:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2582156, now seen corresponding path program 1 times [2021-11-02 20:51:08,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:51:08,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434473631] [2021-11-02 20:51:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:51:08,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:51:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:51:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:51:09,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:51:09,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434473631] [2021-11-02 20:51:09,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434473631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:51:09,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:51:09,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:51:09,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925356373] [2021-11-02 20:51:09,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:51:09,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:51:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:51:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:51:09,206 INFO L87 Difference]: Start difference. First operand 4797 states and 6590 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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) [2021-11-02 20:51:11,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:51:25,499 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:52:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:52:12,642 INFO L93 Difference]: Finished difference Result 14045 states and 19477 transitions. [2021-11-02 20:52:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:52:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 122 [2021-11-02 20:52:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:52:12,698 INFO L225 Difference]: With dead ends: 14045 [2021-11-02 20:52:12,699 INFO L226 Difference]: Without dead ends: 9321 [2021-11-02 20:52:12,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:52:12,724 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 3155 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 6417 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58807.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.21ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6417 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62713.13ms IncrementalHoareTripleChecker+Time [2021-11-02 20:52:12,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3155 Valid, 570 Invalid, 6429 Unknown, 0 Unchecked, 54.21ms Time], IncrementalHoareTripleChecker [10 Valid, 6417 Invalid, 2 Unknown, 0 Unchecked, 62713.13ms Time] [2021-11-02 20:52:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2021-11-02 20:52:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 9291. [2021-11-02 20:52:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9291 states, 8684 states have (on average 1.3721787194841086) internal successors, (11916), 8730 states have internal predecessors, (11916), 448 states have call successors, (448), 148 states have call predecessors, (448), 148 states have return successors, (468), 420 states have call predecessors, (468), 448 states have call successors, (468) [2021-11-02 20:52:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 12832 transitions. [2021-11-02 20:52:12,940 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 12832 transitions. Word has length 122 [2021-11-02 20:52:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:52:12,942 INFO L470 AbstractCegarLoop]: Abstraction has 9291 states and 12832 transitions. [2021-11-02 20:52:12,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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) [2021-11-02 20:52:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 12832 transitions. [2021-11-02 20:52:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-02 20:52:12,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:52:12,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:52:12,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 20:52:12,951 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:52:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:52:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash -625048, now seen corresponding path program 1 times [2021-11-02 20:52:12,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:52:12,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582710969] [2021-11-02 20:52:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:52:12,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:52:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:52:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:52:13,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:52:13,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582710969] [2021-11-02 20:52:13,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582710969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:52:13,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:52:13,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:52:13,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922211478] [2021-11-02 20:52:13,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:52:13,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:52:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:52:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:52:13,480 INFO L87 Difference]: Start difference. First operand 9291 states and 12832 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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) [2021-11-02 20:52:15,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:52:27,745 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:53:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:53:08,973 INFO L93 Difference]: Finished difference Result 18671 states and 25891 transitions. [2021-11-02 20:53:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:53:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 130 [2021-11-02 20:53:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:53:09,037 INFO L225 Difference]: With dead ends: 18671 [2021-11-02 20:53:09,037 INFO L226 Difference]: Without dead ends: 13947 [2021-11-02 20:53:09,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:53:09,064 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 3313 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 6390 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51486.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.16ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6390 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54795.73ms IncrementalHoareTripleChecker+Time [2021-11-02 20:53:09,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 570 Invalid, 6402 Unknown, 0 Unchecked, 49.16ms Time], IncrementalHoareTripleChecker [10 Valid, 6390 Invalid, 2 Unknown, 0 Unchecked, 54795.73ms Time] [2021-11-02 20:53:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13947 states. [2021-11-02 20:53:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13947 to 9423. [2021-11-02 20:53:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9423 states, 8816 states have (on average 1.371029945553539) internal successors, (12087), 8862 states have internal predecessors, (12087), 448 states have call successors, (448), 148 states have call predecessors, (448), 148 states have return successors, (468), 420 states have call predecessors, (468), 448 states have call successors, (468) [2021-11-02 20:53:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 13003 transitions. [2021-11-02 20:53:09,303 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 13003 transitions. Word has length 130 [2021-11-02 20:53:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:53:09,303 INFO L470 AbstractCegarLoop]: Abstraction has 9423 states and 13003 transitions. [2021-11-02 20:53:09,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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) [2021-11-02 20:53:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 13003 transitions. [2021-11-02 20:53:09,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 20:53:09,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:53:09,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:53:09,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 20:53:09,313 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:53:09,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:53:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1684700638, now seen corresponding path program 1 times [2021-11-02 20:53:09,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:53:09,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748164011] [2021-11-02 20:53:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:53:09,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:53:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:53:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:53:09,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:53:09,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748164011] [2021-11-02 20:53:09,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748164011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:53:09,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:53:09,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:53:09,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019022808] [2021-11-02 20:53:09,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:53:09,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:53:09,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:53:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:53:09,734 INFO L87 Difference]: Start difference. First operand 9423 states and 13003 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-02 20:53:11,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:53:25,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:54:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:54:10,217 INFO L93 Difference]: Finished difference Result 27624 states and 38384 transitions. [2021-11-02 20:54:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:54:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 134 [2021-11-02 20:54:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:54:10,336 INFO L225 Difference]: With dead ends: 27624 [2021-11-02 20:54:10,336 INFO L226 Difference]: Without dead ends: 18297 [2021-11-02 20:54:10,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:54:10,372 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 3170 mSDsluCounter, 3429 mSDsCounter, 0 mSdLazyCounter, 6504 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55530.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.79ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 6504 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59686.16ms IncrementalHoareTripleChecker+Time [2021-11-02 20:54:10,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3170 Valid, 601 Invalid, 6513 Unknown, 0 Unchecked, 46.79ms Time], IncrementalHoareTripleChecker [7 Valid, 6504 Invalid, 2 Unknown, 0 Unchecked, 59686.16ms Time] [2021-11-02 20:54:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18297 states. [2021-11-02 20:54:10,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18297 to 18181. [2021-11-02 20:54:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18181 states, 17014 states have (on average 1.3743975549547431) internal successors, (23384), 17092 states have internal predecessors, (23384), 868 states have call successors, (868), 288 states have call predecessors, (868), 288 states have return successors, (1118), 816 states have call predecessors, (1118), 868 states have call successors, (1118) [2021-11-02 20:54:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18181 states to 18181 states and 25370 transitions. [2021-11-02 20:54:10,744 INFO L78 Accepts]: Start accepts. Automaton has 18181 states and 25370 transitions. Word has length 134 [2021-11-02 20:54:10,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:54:10,747 INFO L470 AbstractCegarLoop]: Abstraction has 18181 states and 25370 transitions. [2021-11-02 20:54:10,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2021-11-02 20:54:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 18181 states and 25370 transitions. [2021-11-02 20:54:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 20:54:10,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:54:10,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:54:10,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 20:54:10,755 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:54:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:54:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1690227590, now seen corresponding path program 1 times [2021-11-02 20:54:10,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:54:10,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190741200] [2021-11-02 20:54:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:54:10,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:54:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:54:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:54:11,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:54:11,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190741200] [2021-11-02 20:54:11,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190741200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:54:11,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:54:11,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:54:11,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848384640] [2021-11-02 20:54:11,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:54:11,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:54:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:54:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:54:11,137 INFO L87 Difference]: Start difference. First operand 18181 states and 25370 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-02 20:54:13,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:54:22,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:55:12,694 INFO L93 Difference]: Finished difference Result 50607 states and 70396 transitions. [2021-11-02 20:55:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:55:12,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 134 [2021-11-02 20:55:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:55:12,837 INFO L225 Difference]: With dead ends: 50607 [2021-11-02 20:55:12,838 INFO L226 Difference]: Without dead ends: 32522 [2021-11-02 20:55:12,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:55:12,911 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 2556 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 6592 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56317.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 6595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6592 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60562.63ms IncrementalHoareTripleChecker+Time [2021-11-02 20:55:12,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2556 Valid, 535 Invalid, 6595 Unknown, 0 Unchecked, 47.45ms Time], IncrementalHoareTripleChecker [1 Valid, 6592 Invalid, 2 Unknown, 0 Unchecked, 60562.63ms Time] [2021-11-02 20:55:12,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32522 states. [2021-11-02 20:55:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32522 to 32377. [2021-11-02 20:55:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32377 states, 30334 states have (on average 1.3710028351025252) internal successors, (41588), 30480 states have internal predecessors, (41588), 1480 states have call successors, (1480), 552 states have call predecessors, (1480), 552 states have return successors, (1920), 1376 states have call predecessors, (1920), 1480 states have call successors, (1920) [2021-11-02 20:55:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32377 states to 32377 states and 44988 transitions. [2021-11-02 20:55:13,757 INFO L78 Accepts]: Start accepts. Automaton has 32377 states and 44988 transitions. Word has length 134 [2021-11-02 20:55:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:55:13,757 INFO L470 AbstractCegarLoop]: Abstraction has 32377 states and 44988 transitions. [2021-11-02 20:55:13,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2021-11-02 20:55:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 32377 states and 44988 transitions. [2021-11-02 20:55:13,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 20:55:13,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:55:13,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:55:13,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 20:55:13,768 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:55:13,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:55:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2144092690, now seen corresponding path program 1 times [2021-11-02 20:55:13,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:55:13,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421603183] [2021-11-02 20:55:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:55:13,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:55:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:55:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:55:14,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:55:14,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421603183] [2021-11-02 20:55:14,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421603183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:55:14,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:55:14,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:55:14,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3366147] [2021-11-02 20:55:14,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:55:14,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:55:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:55:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:55:14,137 INFO L87 Difference]: Start difference. First operand 32377 states and 44988 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:55:16,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:22,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:55:36,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:22,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:56:41,919 INFO L93 Difference]: Finished difference Result 94537 states and 132638 transitions. [2021-11-02 20:56:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:56:41,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-02 20:56:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:56:42,200 INFO L225 Difference]: With dead ends: 94537 [2021-11-02 20:56:42,200 INFO L226 Difference]: Without dead ends: 62256 [2021-11-02 20:56:42,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:56:42,315 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 3179 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 8545 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80249.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3179 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 8550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8545 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85816.52ms IncrementalHoareTripleChecker+Time [2021-11-02 20:56:42,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3179 Valid, 691 Invalid, 8550 Unknown, 0 Unchecked, 58.28ms Time], IncrementalHoareTripleChecker [3 Valid, 8545 Invalid, 2 Unknown, 0 Unchecked, 85816.52ms Time] [2021-11-02 20:56:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62256 states. [2021-11-02 20:56:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62256 to 62121. [2021-11-02 20:56:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62121 states, 58278 states have (on average 1.3710834277085693) internal successors, (79904), 58496 states have internal predecessors, (79904), 2752 states have call successors, (2752), 1064 states have call predecessors, (2752), 1080 states have return successors, (4960), 2616 states have call predecessors, (4960), 2752 states have call successors, (4960) [2021-11-02 20:56:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62121 states to 62121 states and 87616 transitions. [2021-11-02 20:56:44,562 INFO L78 Accepts]: Start accepts. Automaton has 62121 states and 87616 transitions. Word has length 138 [2021-11-02 20:56:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:56:44,563 INFO L470 AbstractCegarLoop]: Abstraction has 62121 states and 87616 transitions. [2021-11-02 20:56:44,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 20:56:44,565 INFO L276 IsEmpty]: Start isEmpty. Operand 62121 states and 87616 transitions. [2021-11-02 20:56:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-02 20:56:44,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:56:44,608 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:56:44,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 20:56:44,609 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:56:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:56:44,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1520470149, now seen corresponding path program 1 times [2021-11-02 20:56:44,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:56:44,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454575335] [2021-11-02 20:56:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:56:44,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:56:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:56:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:56:45,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:56:45,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454575335] [2021-11-02 20:56:45,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454575335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:56:45,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:56:45,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:56:45,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285592505] [2021-11-02 20:56:45,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:56:45,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:56:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:56:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:56:45,125 INFO L87 Difference]: Start difference. First operand 62121 states and 87616 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-11-02 20:56:47,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:56:56,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:57:27,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:58:07,205 INFO L93 Difference]: Finished difference Result 99811 states and 140470 transitions. [2021-11-02 20:58:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:58:07,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 167 [2021-11-02 20:58:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:58:07,485 INFO L225 Difference]: With dead ends: 99811 [2021-11-02 20:58:07,485 INFO L226 Difference]: Without dead ends: 37786 [2021-11-02 20:58:07,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:58:07,659 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 3201 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 7967 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74857.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 7969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 51.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7967 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80269.88ms IncrementalHoareTripleChecker+Time [2021-11-02 20:58:07,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3201 Valid, 513 Invalid, 7969 Unknown, 0 Unchecked, 51.16ms Time], IncrementalHoareTripleChecker [0 Valid, 7967 Invalid, 2 Unknown, 0 Unchecked, 80269.88ms Time] [2021-11-02 20:58:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37786 states. [2021-11-02 20:58:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37786 to 37495. [2021-11-02 20:58:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37495 states, 35198 states have (on average 1.3676345246889028) internal successors, (48138), 35336 states have internal predecessors, (48138), 1624 states have call successors, (1624), 646 states have call predecessors, (1624), 662 states have return successors, (2844), 1546 states have call predecessors, (2844), 1624 states have call successors, (2844) [2021-11-02 20:58:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37495 states to 37495 states and 52606 transitions. [2021-11-02 20:58:08,587 INFO L78 Accepts]: Start accepts. Automaton has 37495 states and 52606 transitions. Word has length 167 [2021-11-02 20:58:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:58:08,587 INFO L470 AbstractCegarLoop]: Abstraction has 37495 states and 52606 transitions. [2021-11-02 20:58:08,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2021-11-02 20:58:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 37495 states and 52606 transitions. [2021-11-02 20:58:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-02 20:58:08,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:58:08,599 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:58:08,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 20:58:08,600 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting usb_serial_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 20:58:08,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:58:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 715413084, now seen corresponding path program 1 times [2021-11-02 20:58:08,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:58:08,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729191563] [2021-11-02 20:58:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:58:08,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:58:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:58:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-02 20:58:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:58:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:58:09,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:58:09,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729191563] [2021-11-02 20:58:09,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729191563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:58:09,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:58:09,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 20:58:09,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590601034] [2021-11-02 20:58:09,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 20:58:09,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:58:09,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 20:58:09,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 20:58:09,354 INFO L87 Difference]: Start difference. First operand 37495 states and 52606 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 20:58:11,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:58:20,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:59:07,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:00:30,066 INFO L93 Difference]: Finished difference Result 104458 states and 147591 transitions. [2021-11-02 21:00:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:00:30,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-11-02 21:00:30,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:00:30,478 INFO L225 Difference]: With dead ends: 104458 [2021-11-02 21:00:30,478 INFO L226 Difference]: Without dead ends: 67059 [2021-11-02 21:00:30,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 343.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:00:30,675 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 3701 mSDsluCounter, 6260 mSDsCounter, 0 mSdLazyCounter, 14440 mSolverCounterSat, 263 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129480.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 14706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 196.23ms SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 14440 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138058.94ms IncrementalHoareTripleChecker+Time [2021-11-02 21:00:30,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3736 Valid, 721 Invalid, 14706 Unknown, 0 Unchecked, 196.23ms Time], IncrementalHoareTripleChecker [263 Valid, 14440 Invalid, 3 Unknown, 0 Unchecked, 138058.94ms Time] [2021-11-02 21:00:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67059 states. [2021-11-02 21:00:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67059 to 65011. [2021-11-02 21:00:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65011 states, 60829 states have (on average 1.3665685774877114) internal successors, (83127), 61063 states have internal predecessors, (83127), 2790 states have call successors, (2790), 1069 states have call predecessors, (2790), 1381 states have return successors, (6198), 2950 states have call predecessors, (6198), 2790 states have call successors, (6198) [2021-11-02 21:00:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65011 states to 65011 states and 92115 transitions. [2021-11-02 21:00:32,859 INFO L78 Accepts]: Start accepts. Automaton has 65011 states and 92115 transitions. Word has length 179 [2021-11-02 21:00:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:00:32,860 INFO L470 AbstractCegarLoop]: Abstraction has 65011 states and 92115 transitions. [2021-11-02 21:00:32,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 3 states have internal predecessors, (174), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 21:00:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 65011 states and 92115 transitions. [2021-11-02 21:00:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 21:00:32,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:00:32,916 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:00:32,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 21:00:32,916 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [serial_cleanupErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-02 21:00:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:00:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1518436734, now seen corresponding path program 1 times [2021-11-02 21:00:32,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:00:32,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171465478] [2021-11-02 21:00:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:00:32,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:00:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:00:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 21:00:33,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:00:33,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171465478] [2021-11-02 21:00:33,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171465478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:00:33,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:00:33,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:00:33,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144192118] [2021-11-02 21:00:33,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:00:33,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:00:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:00:33,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:00:33,550 INFO L87 Difference]: Start difference. First operand 65011 states and 92115 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2021-11-02 21:00:35,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:00:46,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:01:15,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15