./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:55:30,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:55:30,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:55:30,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:55:30,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:55:30,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:55:30,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:55:30,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:55:30,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:55:30,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:55:30,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:55:30,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:55:30,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:55:30,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:55:30,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:55:30,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:55:30,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:55:30,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:55:30,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:55:30,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:55:30,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:55:30,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:55:30,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:55:30,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:55:30,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:55:30,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:55:30,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:55:30,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:55:30,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:55:30,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:55:30,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:55:30,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:55:30,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:55:30,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:55:30,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:55:30,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:55:30,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:55:30,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:55:30,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:55:30,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:55:30,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:55:30,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:55:30,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:55:30,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:55:30,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:55:30,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:55:30,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:55:30,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:55:30,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:55:30,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:55:30,551 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:55:30,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:55:30,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:55:30,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:55:30,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:55:30,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:55:30,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:55:30,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:55:30,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:55:30,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:55:30,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:55:30,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:55:30,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:55:30,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:55:30,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:55:30,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:55:30,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:55:30,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:55:30,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:55:30,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:55:30,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:55:30,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:55:30,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:55:30,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-12-14 17:55:30,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:55:30,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:55:30,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:55:30,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:55:30,789 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:55:30,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-14 17:55:30,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9770ea9e/e4d12d74ab63476691508a4a8d0c7008/FLAG4c2e6be0f [2021-12-14 17:55:31,500 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:55:31,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-14 17:55:31,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9770ea9e/e4d12d74ab63476691508a4a8d0c7008/FLAG4c2e6be0f [2021-12-14 17:55:31,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9770ea9e/e4d12d74ab63476691508a4a8d0c7008 [2021-12-14 17:55:31,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:55:31,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:55:31,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:55:31,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:55:31,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:55:31,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:55:31" (1/1) ... [2021-12-14 17:55:31,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bff073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:31, skipping insertion in model container [2021-12-14 17:55:31,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:55:31" (1/1) ... [2021-12-14 17:55:31,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:55:31,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:55:32,702 WARN L230 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-12-14 17:55:32,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:55:32,771 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:55:33,091 WARN L230 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-12-14 17:55:33,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:55:33,159 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:55:33,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33 WrapperNode [2021-12-14 17:55:33,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:55:33,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:55:33,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:55:33,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:55:33,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,405 INFO L137 Inliner]: procedures = 187, calls = 2219, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4636 [2021-12-14 17:55:33,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:55:33,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:55:33,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:55:33,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:55:33,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:55:33,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:55:33,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:55:33,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:55:33,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (1/1) ... [2021-12-14 17:55:33,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:55:33,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:55:33,664 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) [2021-12-14 17:55:33,690 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 [2021-12-14 17:55:33,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-14 17:55:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-14 17:55:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:55:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-14 17:55:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-14 17:55:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:55:33,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:55:33,706 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:55:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:55:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:55:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:55:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:55:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:55:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 17:55:33,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 17:55:33,707 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-14 17:55:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-14 17:55:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-14 17:55:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-14 17:55:33,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_serial_deregister [2021-12-14 17:55:33,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_serial_deregister [2021-12-14 17:55:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-14 17:55:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-14 17:55:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-14 17:55:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-14 17:55:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:55:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:55:33,709 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:55:33,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:55:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:55:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:55:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:55:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:55:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-14 17:55:33,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-14 17:55:33,710 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-14 17:55:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-14 17:55:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-14 17:55:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-14 17:55:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-14 17:55:33,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-14 17:55:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:55:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:55:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-14 17:55:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-14 17:55:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-14 17:55:33,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-14 17:55:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:55:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:55:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:55:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:55:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:55:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-14 17:55:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-14 17:55:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-14 17:55:33,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-14 17:55:33,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:55:33,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:55:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:55:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-14 17:55:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-14 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:55:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-14 17:55:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-14 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-14 17:55:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-14 17:55:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-14 17:55:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-14 17:55:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 17:55:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 17:55:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:55:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:55:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-14 17:55:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-14 17:55:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-14 17:55:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-14 17:55:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-14 17:55:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-14 17:55:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-14 17:55:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-14 17:55:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:55:33,719 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-14 17:55:33,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-14 17:55:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-14 17:55:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-14 17:55:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 17:55:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:55:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-14 17:55:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-14 17:55:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 17:55:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:55:33,745 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-14 17:55:33,745 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-14 17:55:33,746 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:55:33,746 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-14 17:55:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-14 17:55:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-14 17:55:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:55:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-14 17:55:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:55:33,747 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:55:33,747 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-14 17:55:33,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-14 17:55:33,748 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:55:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-14 17:55:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:55:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-14 17:55:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-14 17:55:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-14 17:55:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:55:33,749 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:55:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:55:33,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:55:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:55:34,356 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:55:34,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:55:34,700 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:56:04,512 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:56:04,532 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:56:04,532 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:56:04,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:56:04 BoogieIcfgContainer [2021-12-14 17:56:04,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:56:04,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:56:04,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:56:04,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:56:04,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:55:31" (1/3) ... [2021-12-14 17:56:04,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731fda2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:56:04, skipping insertion in model container [2021-12-14 17:56:04,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:55:33" (2/3) ... [2021-12-14 17:56:04,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731fda2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:56:04, skipping insertion in model container [2021-12-14 17:56:04,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:56:04" (3/3) ... [2021-12-14 17:56:04,544 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-14 17:56:04,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:56:04,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:56:04,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:56:04,617 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 [2021-12-14 17:56:04,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:56:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 1529 states, 1104 states have (on average 1.4230072463768115) internal successors, (1571), 1128 states have internal predecessors, (1571), 349 states have call successors, (349), 75 states have call predecessors, (349), 74 states have return successors, (343), 341 states have call predecessors, (343), 343 states have call successors, (343) [2021-12-14 17:56:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-14 17:56:04,676 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:56:04,677 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:56:04,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:56:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:56:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -44726715, now seen corresponding path program 1 times [2021-12-14 17:56:04,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:56:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955542348] [2021-12-14 17:56:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:56:04,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:56:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:56:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:56:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:56:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:56:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:56:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:56:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:56:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:56:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:56:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 17:56:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:56:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 17:56:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 17:56:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-14 17:56:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:56:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-14 17:56:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-14 17:56:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-14 17:56:05,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:56:05,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955542348] [2021-12-14 17:56:05,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955542348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:56:05,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:56:05,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:56:05,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45347687] [2021-12-14 17:56:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:56:05,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:56:05,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:56:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:56:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:56:05,913 INFO L87 Difference]: Start difference. First operand has 1529 states, 1104 states have (on average 1.4230072463768115) internal successors, (1571), 1128 states have internal predecessors, (1571), 349 states have call successors, (349), 75 states have call predecessors, (349), 74 states have return successors, (343), 341 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:56:07,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:56:12,386 INFO L93 Difference]: Finished difference Result 3395 states and 5387 transitions. [2021-12-14 17:56:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:56:12,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 224 [2021-12-14 17:56:12,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:56:12,420 INFO L225 Difference]: With dead ends: 3395 [2021-12-14 17:56:12,421 INFO L226 Difference]: Without dead ends: 1853 [2021-12-14 17:56:12,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:56:12,438 INFO L933 BasicCegarLoop]: 2412 mSDtfsCounter, 1611 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1402 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1402 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:56:12,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 3594 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1402 Valid, 969 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-12-14 17:56:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-12-14 17:56:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1512. [2021-12-14 17:56:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1094 states have (on average 1.4177330895795246) internal successors, (1551), 1112 states have internal predecessors, (1551), 343 states have call successors, (343), 74 states have call predecessors, (343), 74 states have return successors, (342), 340 states have call predecessors, (342), 342 states have call successors, (342) [2021-12-14 17:56:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2236 transitions. [2021-12-14 17:56:12,591 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2236 transitions. Word has length 224 [2021-12-14 17:56:12,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:56:12,591 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2236 transitions. [2021-12-14 17:56:12,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-14 17:56:12,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2236 transitions. [2021-12-14 17:56:12,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-14 17:56:12,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:56:12,596 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:56:12,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:56:12,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:56:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:56:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1303521969, now seen corresponding path program 1 times [2021-12-14 17:56:12,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:56:12,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289275057] [2021-12-14 17:56:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:56:12,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:56:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:56:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:56:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:56:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:56:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:56:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:56:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:56:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:56:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:56:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 17:56:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:56:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 17:56:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 17:56:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-14 17:56:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:56:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-14 17:56:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-14 17:56:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-14 17:56:13,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:56:13,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289275057] [2021-12-14 17:56:13,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289275057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:56:13,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:56:13,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:56:13,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930329239] [2021-12-14 17:56:13,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:56:13,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:56:13,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:56:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:56:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:56:13,309 INFO L87 Difference]: Start difference. First operand 1512 states and 2236 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:56:15,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:17,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:19,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:56:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:56:29,597 INFO L93 Difference]: Finished difference Result 5054 states and 7854 transitions. [2021-12-14 17:56:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:56:29,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 224 [2021-12-14 17:56:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:56:29,628 INFO L225 Difference]: With dead ends: 5054 [2021-12-14 17:56:29,629 INFO L226 Difference]: Without dead ends: 3584 [2021-12-14 17:56:29,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:56:29,639 INFO L933 BasicCegarLoop]: 2572 mSDtfsCounter, 4220 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 3357 mSolverCounterSat, 2097 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 7509 SdHoareTripleChecker+Invalid, 5457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2097 IncrementalHoareTripleChecker+Valid, 3357 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:56:29,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4508 Valid, 7509 Invalid, 5457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2097 Valid, 3357 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2021-12-14 17:56:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-12-14 17:56:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2903. [2021-12-14 17:56:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2903 states, 2111 states have (on average 1.4272856466129797) internal successors, (3013), 2146 states have internal predecessors, (3013), 648 states have call successors, (648), 143 states have call predecessors, (648), 143 states have return successors, (647), 643 states have call predecessors, (647), 647 states have call successors, (647) [2021-12-14 17:56:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4308 transitions. [2021-12-14 17:56:29,766 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4308 transitions. Word has length 224 [2021-12-14 17:56:29,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:56:29,769 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4308 transitions. [2021-12-14 17:56:29,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-12-14 17:56:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4308 transitions. [2021-12-14 17:56:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-14 17:56:29,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:56:29,779 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-14 17:56:29,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:56:29,779 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:56:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:56:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash -42409691, now seen corresponding path program 1 times [2021-12-14 17:56:29,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:56:29,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11177914] [2021-12-14 17:56:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:56:29,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:56:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:56:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 17:56:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:56:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:56:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:56:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:56:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:56:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:56:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:56:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 17:56:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 17:56:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:56:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 17:56:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 17:56:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-14 17:56:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-14 17:56:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-14 17:56:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-14 17:56:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:56:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-14 17:56:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-14 17:56:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:56:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-12-14 17:56:30,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:56:30,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11177914] [2021-12-14 17:56:30,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11177914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:56:30,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:56:30,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:56:30,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027366223] [2021-12-14 17:56:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:56:30,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:56:30,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:56:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:56:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:56:30,581 INFO L87 Difference]: Start difference. First operand 2903 states and 4308 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-14 17:56:32,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []