./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-16 04:09:31,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:09:31,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:09:31,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:09:31,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:09:31,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:09:31,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:09:31,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:09:31,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:09:31,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:09:31,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:09:31,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:09:31,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:09:31,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:09:31,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:09:31,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:09:31,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:09:31,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:09:31,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:09:31,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:09:31,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:09:31,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:09:31,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:09:31,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:09:31,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:09:31,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:09:31,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:09:31,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:09:31,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:09:31,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:09:31,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:09:31,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:09:31,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:09:31,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:09:31,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:09:31,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:09:31,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:09:31,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:09:31,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:09:31,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:09:31,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:09:31,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:09:31,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:09:31,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:09:31,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:09:31,598 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:09:31,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:09:31,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:09:31,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:09:31,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:09:31,600 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:09:31,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:09:31,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:09:31,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:09:31,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:09:31,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:09:31,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:09:31,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:09:31,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:09:31,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:09:31,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:09:31,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:09:31,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:09:31,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:09:31,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:09:31,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:09:31,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:09:31,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:09:31,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:09:31,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:09:31,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:09:31,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:09:31,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:09:31,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-12-16 04:09:31,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:09:31,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:09:31,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:09:31,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:09:31,864 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:09:31,865 INFO L432 ainManager$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 [2021-12-16 04:09:31,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed48307ad/f9aa38b03cf54cf7a732981011ae151f/FLAG9cb2ec022 [2021-12-16 04:09:32,644 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:09:32,644 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 [2021-12-16 04:09:32,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed48307ad/f9aa38b03cf54cf7a732981011ae151f/FLAG9cb2ec022 [2021-12-16 04:09:32,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed48307ad/f9aa38b03cf54cf7a732981011ae151f [2021-12-16 04:09:32,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:09:32,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:09:32,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:09:32,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:09:32,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:09:32,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:09:32" (1/1) ... [2021-12-16 04:09:32,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12450bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:32, skipping insertion in model container [2021-12-16 04:09:32,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:09:32" (1/1) ... [2021-12-16 04:09:32,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:09:33,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:09:34,247 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] [2021-12-16 04:09:34,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:09:34,319 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:09:34,595 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] [2021-12-16 04:09:34,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:09:34,661 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:09:34,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34 WrapperNode [2021-12-16 04:09:34,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:09:34,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:09:34,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:09:34,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:09:34,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:34,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:34,894 INFO L137 Inliner]: procedures = 187, calls = 2219, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4636 [2021-12-16 04:09:34,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:09:34,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:09:34,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:09:34,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:09:34,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:34,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:34,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:34,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:35,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:35,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:35,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:35,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:09:35,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:09:35,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:09:35,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:09:35,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (1/1) ... [2021-12-16 04:09:35,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:09:35,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:09:35,168 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) [2021-12-16 04:09:35,193 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 [2021-12-16 04:09:35,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-16 04:09:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-16 04:09:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:09:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-16 04:09:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-16 04:09:35,217 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 04:09:35,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 04:09:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-16 04:09:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:09:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:09:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:09:35,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:09:35,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:09:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-16 04:09:35,219 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-16 04:09:35,219 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-16 04:09:35,219 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-16 04:09:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-16 04:09:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-16 04:09:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_serial_deregister [2021-12-16 04:09:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_serial_deregister [2021-12-16 04:09:35,220 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-16 04:09:35,220 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-16 04:09:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-16 04:09:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-16 04:09:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-16 04:09:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-16 04:09:35,221 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:09:35,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:09:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:09:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:09:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 04:09:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 04:09:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-16 04:09:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-16 04:09:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-16 04:09:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-16 04:09:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-16 04:09:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-16 04:09:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-16 04:09:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-16 04:09:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:09:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:09:35,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-16 04:09:35,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-16 04:09:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-16 04:09:35,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-16 04:09:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:09:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:09:35,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:09:35,225 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-16 04:09:35,226 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-16 04:09:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-16 04:09:35,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-16 04:09:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-16 04:09:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-16 04:09:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:09:35,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:09:35,228 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-16 04:09:35,228 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-16 04:09:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-16 04:09:35,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-16 04:09:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 04:09:35,229 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 04:09:35,229 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-16 04:09:35,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-16 04:09:35,230 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-16 04:09:35,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-16 04:09:35,230 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-16 04:09:35,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-16 04:09:35,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-16 04:09:35,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-16 04:09:35,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:09:35,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:09:35,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-16 04:09:35,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-16 04:09:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-16 04:09:35,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-16 04:09:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-16 04:09:35,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-16 04:09:35,232 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-16 04:09:35,232 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-16 04:09:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:09:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-16 04:09:35,233 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-16 04:09:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-16 04:09:35,233 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-16 04:09:35,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-16 04:09:35,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-16 04:09:35,234 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 04:09:35,234 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 04:09:35,234 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-16 04:09:35,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-16 04:09:35,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:09:35,235 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-16 04:09:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-16 04:09:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 04:09:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 04:09:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:09:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:09:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-16 04:09:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-16 04:09:35,237 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-16 04:09:35,237 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-16 04:09:35,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-16 04:09:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-16 04:09:35,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-16 04:09:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-16 04:09:35,238 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-16 04:09:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-16 04:09:35,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-16 04:09:35,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:09:35,239 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-16 04:09:35,239 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-16 04:09:35,239 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-16 04:09:35,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-16 04:09:35,239 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-16 04:09:35,240 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-16 04:09:35,241 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 04:09:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 04:09:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-16 04:09:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-16 04:09:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:09:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-16 04:09:35,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-16 04:09:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:09:35,246 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-16 04:09:35,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-16 04:09:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 04:09:35,253 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 04:09:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-16 04:09:35,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-16 04:09:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 04:09:35,253 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 04:09:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 04:09:35,254 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 04:09:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-16 04:09:35,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-16 04:09:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-16 04:09:35,254 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-16 04:09:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 04:09:35,255 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 04:09:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-16 04:09:35,255 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-16 04:09:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-16 04:09:35,255 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-16 04:09:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-16 04:09:35,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-16 04:09:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-16 04:09:35,256 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-16 04:09:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-16 04:09:35,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-16 04:09:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-16 04:09:35,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-16 04:09:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-16 04:09:35,256 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-16 04:09:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:09:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-16 04:09:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-16 04:09:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-16 04:09:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-16 04:09:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-16 04:09:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-16 04:09:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:09:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 04:09:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 04:09:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:09:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:09:35,858 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:09:35,861 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:09:36,231 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:10:04,618 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:10:04,639 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:10:04,640 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 04:10:04,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:10:04 BoogieIcfgContainer [2021-12-16 04:10:04,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:10:04,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:10:04,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:10:04,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:10:04,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:09:32" (1/3) ... [2021-12-16 04:10:04,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db8dbd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:10:04, skipping insertion in model container [2021-12-16 04:10:04,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:09:34" (2/3) ... [2021-12-16 04:10:04,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db8dbd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:10:04, skipping insertion in model container [2021-12-16 04:10:04,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:10:04" (3/3) ... [2021-12-16 04:10:04,653 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 [2021-12-16 04:10:04,657 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:10:04,657 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:10:04,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:10:04,736 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 [2021-12-16 04:10:04,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:10:04,790 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) [2021-12-16 04:10:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-16 04:10:04,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:10:04,807 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] [2021-12-16 04:10:04,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:10:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:10:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -44726715, now seen corresponding path program 1 times [2021-12-16 04:10:04,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:10:04,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56304193] [2021-12-16 04:10:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:10:04,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:10:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:10:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:10:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:10:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:10:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:10:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:10:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 04:10:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 04:10:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 04:10:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 04:10:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:10:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 04:10:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 04:10:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-16 04:10:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-16 04:10:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-16 04:10:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-16 04:10:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-16 04:10:05,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:10:05,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56304193] [2021-12-16 04:10:05,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56304193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:10:05,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:10:05,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:10:05,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248183616] [2021-12-16 04:10:05,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:10:05,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:10:05,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:10:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:10:05,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:10:05,886 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) [2021-12-16 04:10:07,964 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 [] [2021-12-16 04:10:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:10:12,060 INFO L93 Difference]: Finished difference Result 3395 states and 5387 transitions. [2021-12-16 04:10:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:10:12,062 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 [2021-12-16 04:10:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:10:12,097 INFO L225 Difference]: With dead ends: 3395 [2021-12-16 04:10:12,098 INFO L226 Difference]: Without dead ends: 1853 [2021-12-16 04:10:12,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:10:12,123 INFO L933 BasicCegarLoop]: 2416 mSDtfsCounter, 1597 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 1391 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:10:12,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1650 Valid, 3594 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-12-16 04:10:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2021-12-16 04:10:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1512. [2021-12-16 04:10:12,299 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) [2021-12-16 04:10:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 2236 transitions. [2021-12-16 04:10:12,314 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 2236 transitions. Word has length 224 [2021-12-16 04:10:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:10:12,315 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 2236 transitions. [2021-12-16 04:10:12,315 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) [2021-12-16 04:10:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 2236 transitions. [2021-12-16 04:10:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-16 04:10:12,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:10:12,325 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] [2021-12-16 04:10:12,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:10:12,325 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:10:12,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:10:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1303521969, now seen corresponding path program 1 times [2021-12-16 04:10:12,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:10:12,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750624376] [2021-12-16 04:10:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:10:12,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:10:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:10:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:10:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:10:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:10:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:10:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:10:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 04:10:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 04:10:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 04:10:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 04:10:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:10:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 04:10:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 04:10:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-16 04:10:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-16 04:10:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-16 04:10:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-16 04:10:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-16 04:10:12,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:10:12,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750624376] [2021-12-16 04:10:12,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750624376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:10:12,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:10:12,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:10:12,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813554314] [2021-12-16 04:10:12,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:10:12,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:10:12,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:10:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:10:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:10:12,939 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) [2021-12-16 04:10:14,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:10:17,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:10:19,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:10:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:10:29,641 INFO L93 Difference]: Finished difference Result 5054 states and 7854 transitions. [2021-12-16 04:10:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:10:29,642 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 [2021-12-16 04:10:29,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:10:29,671 INFO L225 Difference]: With dead ends: 5054 [2021-12-16 04:10:29,671 INFO L226 Difference]: Without dead ends: 3584 [2021-12-16 04:10:29,683 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 [2021-12-16 04:10:29,684 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4230 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 2103 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4511 SdHoareTripleChecker+Valid, 7491 SdHoareTripleChecker+Invalid, 5473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2103 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-12-16 04:10:29,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4511 Valid, 7491 Invalid, 5473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2103 Valid, 3367 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2021-12-16 04:10:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-12-16 04:10:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 2903. [2021-12-16 04:10:29,807 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) [2021-12-16 04:10:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 4308 transitions. [2021-12-16 04:10:29,824 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 4308 transitions. Word has length 224 [2021-12-16 04:10:29,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:10:29,827 INFO L470 AbstractCegarLoop]: Abstraction has 2903 states and 4308 transitions. [2021-12-16 04:10:29,827 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) [2021-12-16 04:10:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 4308 transitions. [2021-12-16 04:10:29,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-16 04:10:29,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:10:29,835 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] [2021-12-16 04:10:29,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:10:29,836 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_usb_serial_deregisterErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:10:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:10:29,837 INFO L85 PathProgramCache]: Analyzing trace with hash -42409691, now seen corresponding path program 1 times [2021-12-16 04:10:29,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:10:29,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336076213] [2021-12-16 04:10:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:10:29,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:10:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:10:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:10:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:10:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:10:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:10:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:10:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 04:10:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 04:10:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 04:10:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 04:10:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 04:10:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 04:10:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 04:10:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 04:10:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-16 04:10:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-16 04:10:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-16 04:10:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-16 04:10:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:10:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-16 04:10:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-16 04:10:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:10:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-12-16 04:10:30,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:10:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336076213] [2021-12-16 04:10:30,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336076213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:10:30,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:10:30,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:10:30,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498997656] [2021-12-16 04:10:30,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:10:30,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:10:30,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:10:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:10:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:10:30,566 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) [2021-12-16 04:10:32,624 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 []