./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:44:32,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:44:32,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:44:32,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:44:32,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:44:32,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:44:32,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:44:32,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:44:32,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:44:32,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:44:32,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:44:32,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:44:32,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:44:32,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:44:32,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:44:32,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:44:32,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:44:32,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:44:32,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:44:32,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:44:32,427 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:44:32,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:44:32,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:44:32,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:44:32,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:44:32,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:44:32,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:44:32,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:44:32,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:44:32,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:44:32,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:44:32,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:44:32,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:44:32,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:44:32,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:44:32,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:44:32,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:44:32,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:44:32,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:44:32,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:44:32,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:44:32,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:44:32,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:44:32,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:44:32,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:44:32,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:44:32,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:44:32,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:44:32,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:44:32,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:44:32,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:44:32,468 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:44:32,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:44:32,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:44:32,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:44:32,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:44:32,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:44:32,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:44:32,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:44:32,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:44:32,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:44:32,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:44:32,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:44:32,472 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:44:32,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:44:32,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:44:32,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2022-07-22 23:44:32,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:44:32,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:44:32,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:44:32,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:44:32,689 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:44:32,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-07-22 23:44:32,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b56b5eb5/15919a68fa4c40dfaeb8ce42fd0e6257/FLAG4d5caed7b [2022-07-22 23:44:33,391 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:44:33,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-07-22 23:44:33,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b56b5eb5/15919a68fa4c40dfaeb8ce42fd0e6257/FLAG4d5caed7b [2022-07-22 23:44:33,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b56b5eb5/15919a68fa4c40dfaeb8ce42fd0e6257 [2022-07-22 23:44:33,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:44:33,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:44:33,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:44:33,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:44:33,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:44:33,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:44:33" (1/1) ... [2022-07-22 23:44:33,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa835b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:33, skipping insertion in model container [2022-07-22 23:44:33,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:44:33" (1/1) ... [2022-07-22 23:44:33,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:44:33,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:44:34,532 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-07-22 23:44:35,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:44:35,420 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:44:35,557 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i[119996,120009] [2022-07-22 23:44:35,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:44:35,892 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:44:35,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35 WrapperNode [2022-07-22 23:44:35,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:44:35,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:44:35,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:44:35,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:44:35,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:35,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,117 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2022-07-22 23:44:36,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:44:36,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:44:36,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:44:36,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:44:36,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:44:36,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:44:36,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:44:36,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:44:36,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (1/1) ... [2022-07-22 23:44:36,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:44:36,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:44:36,429 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) [2022-07-22 23:44:36,443 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 [2022-07-22 23:44:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-07-22 23:44:36,460 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-07-22 23:44:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-07-22 23:44:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-07-22 23:44:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-07-22 23:44:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-07-22 23:44:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-07-22 23:44:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-07-22 23:44:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-22 23:44:36,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-22 23:44:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2022-07-22 23:44:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2022-07-22 23:44:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-07-22 23:44:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-07-22 23:44:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:44:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:44:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-22 23:44:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-22 23:44:36,462 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-07-22 23:44:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-07-22 23:44:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-07-22 23:44:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-07-22 23:44:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-07-22 23:44:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-07-22 23:44:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-22 23:44:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-22 23:44:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-07-22 23:44:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-07-22 23:44:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-22 23:44:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-22 23:44:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-22 23:44:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-22 23:44:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-07-22 23:44:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-07-22 23:44:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:44:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:44:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-22 23:44:36,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-22 23:44:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-22 23:44:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-22 23:44:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-07-22 23:44:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-07-22 23:44:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-07-22 23:44:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-07-22 23:44:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-07-22 23:44:36,465 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-07-22 23:44:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-22 23:44:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-22 23:44:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:44:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:44:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:44:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:44:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-07-22 23:44:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-07-22 23:44:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-07-22 23:44:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-07-22 23:44:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-07-22 23:44:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-07-22 23:44:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-22 23:44:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-22 23:44:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-07-22 23:44:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-07-22 23:44:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:44:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:44:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:44:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:44:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-07-22 23:44:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-07-22 23:44:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-07-22 23:44:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-07-22 23:44:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-07-22 23:44:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-07-22 23:44:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-07-22 23:44:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-07-22 23:44:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-07-22 23:44:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-07-22 23:44:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2022-07-22 23:44:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2022-07-22 23:44:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-07-22 23:44:36,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-07-22 23:44:36,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:44:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:44:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:44:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:44:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:44:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 23:44:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 23:44:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-07-22 23:44:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-07-22 23:44:36,470 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-07-22 23:44:36,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-07-22 23:44:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-07-22 23:44:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-07-22 23:44:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-07-22 23:44:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-07-22 23:44:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-22 23:44:36,471 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-22 23:44:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:44:36,471 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:44:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:44:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-22 23:44:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-07-22 23:44:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-07-22 23:44:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-07-22 23:44:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-07-22 23:44:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-22 23:44:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-22 23:44:36,472 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:44:36,472 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:44:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-07-22 23:44:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-07-22 23:44:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-07-22 23:44:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-07-22 23:44:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:44:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:44:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-07-22 23:44:36,473 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-07-22 23:44:36,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:44:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-22 23:44:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-22 23:44:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-22 23:44:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:44:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:44:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-07-22 23:44:36,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-07-22 23:44:36,474 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-07-22 23:44:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-07-22 23:44:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:44:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:44:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:44:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:44:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-22 23:44:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-22 23:44:36,475 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-07-22 23:44:36,475 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-07-22 23:44:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-07-22 23:44:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-07-22 23:44:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-07-22 23:44:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-07-22 23:44:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-22 23:44:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-22 23:44:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-07-22 23:44:36,476 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-07-22 23:44:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2022-07-22 23:44:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2022-07-22 23:44:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:44:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:44:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-07-22 23:44:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-07-22 23:44:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:44:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:44:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-07-22 23:44:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-07-22 23:44:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-07-22 23:44:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-07-22 23:44:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-07-22 23:44:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-07-22 23:44:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-07-22 23:44:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-07-22 23:44:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-07-22 23:44:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-07-22 23:44:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:44:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-07-22 23:44:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-07-22 23:44:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-22 23:44:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-22 23:44:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-07-22 23:44:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-07-22 23:44:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 23:44:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 23:44:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-07-22 23:44:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-07-22 23:44:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-07-22 23:44:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-07-22 23:44:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:44:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:44:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 23:44:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 23:44:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-22 23:44:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-22 23:44:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-07-22 23:44:36,480 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-07-22 23:44:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:44:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:44:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2022-07-22 23:44:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2022-07-22 23:44:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2022-07-22 23:44:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2022-07-22 23:44:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-22 23:44:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-22 23:44:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:44:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-07-22 23:44:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-07-22 23:44:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-07-22 23:44:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-07-22 23:44:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-22 23:44:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-07-22 23:44:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:44:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:44:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-07-22 23:44:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-07-22 23:44:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-07-22 23:44:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-07-22 23:44:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-07-22 23:44:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-07-22 23:44:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:44:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-07-22 23:44:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-07-22 23:44:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:44:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-22 23:44:36,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-22 23:44:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:44:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:44:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2022-07-22 23:44:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2022-07-22 23:44:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2022-07-22 23:44:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2022-07-22 23:44:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:44:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:44:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:44:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:44:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-07-22 23:44:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-07-22 23:44:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-22 23:44:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-22 23:44:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-07-22 23:44:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-07-22 23:44:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2022-07-22 23:44:36,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2022-07-22 23:44:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-07-22 23:44:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-07-22 23:44:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-07-22 23:44:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-07-22 23:44:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-07-22 23:44:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-07-22 23:44:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-07-22 23:44:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-07-22 23:44:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-22 23:44:36,486 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-22 23:44:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-07-22 23:44:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-07-22 23:44:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:44:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:44:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-07-22 23:44:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-07-22 23:44:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:44:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:44:36,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-22 23:44:36,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-22 23:44:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:44:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:44:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:44:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-22 23:44:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-22 23:44:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-07-22 23:44:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-07-22 23:44:36,488 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:44:36,488 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:44:37,179 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:44:37,184 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:44:37,446 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:44:37,945 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2022-07-22 23:44:43,140 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:44:43,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:44:43,163 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:44:43,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:44:43 BoogieIcfgContainer [2022-07-22 23:44:43,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:44:43,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:44:43,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:44:43,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:44:43,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:44:33" (1/3) ... [2022-07-22 23:44:43,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226d1621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:44:43, skipping insertion in model container [2022-07-22 23:44:43,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:35" (2/3) ... [2022-07-22 23:44:43,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226d1621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:44:43, skipping insertion in model container [2022-07-22 23:44:43,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:44:43" (3/3) ... [2022-07-22 23:44:43,181 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-07-22 23:44:43,190 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:44:43,190 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:44:43,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:44:43,252 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24d571f8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42b766e7 [2022-07-22 23:44:43,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:44:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) [2022-07-22 23:44:43,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 23:44:43,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:44:43,273 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:44:43,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:44:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:44:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2022-07-22 23:44:43,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:44:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010891445] [2022-07-22 23:44:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:44:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:44:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:44:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:44:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:44:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:44:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:44:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:44:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:44:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:44:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:44:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:44:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010891445] [2022-07-22 23:44:43,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010891445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:44:43,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:44:43,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:44:43,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481614009] [2022-07-22 23:44:43,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:44:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:44:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:44:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:44:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:44:43,870 INFO L87 Difference]: Start difference. First operand has 2105 states, 1518 states have (on average 1.3399209486166008) internal successors, (2034), 1559 states have internal predecessors, (2034), 465 states have call successors, (465), 122 states have call predecessors, (465), 120 states have return successors, (451), 440 states have call predecessors, (451), 451 states have call successors, (451) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 23:44:47,092 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 [] [2022-07-22 23:44:51,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:44:51,565 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2022-07-22 23:44:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:44:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 69 [2022-07-22 23:44:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:44:51,631 INFO L225 Difference]: With dead ends: 6691 [2022-07-22 23:44:51,631 INFO L226 Difference]: Without dead ends: 4554 [2022-07-22 23:44:51,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:44:51,654 INFO L413 NwaCegarLoop]: 3156 mSDtfsCounter, 4027 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 1412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4349 SdHoareTripleChecker+Valid, 6821 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:44:51,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4349 Valid, 6821 Invalid, 3428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1412 Valid, 2015 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-07-22 23:44:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2022-07-22 23:44:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2022-07-22 23:44:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2945 states have (on average 1.33276740237691) internal successors, (3925), 2988 states have internal predecessors, (3925), 866 states have call successors, (866), 237 states have call predecessors, (866), 236 states have return successors, (859), 837 states have call predecessors, (859), 859 states have call successors, (859) [2022-07-22 23:44:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2022-07-22 23:44:51,894 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2022-07-22 23:44:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:44:51,896 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2022-07-22 23:44:51,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 23:44:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2022-07-22 23:44:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 23:44:51,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:44:51,908 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:44:51,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:44:51,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:44:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:44:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2022-07-22 23:44:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:44:51,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008334825] [2022-07-22 23:44:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:44:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:44:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:44:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:44:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:44:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:44:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:44:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:44:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:44:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:44:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 23:44:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:44:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:44:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:44:52,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008334825] [2022-07-22 23:44:52,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008334825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:44:52,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:44:52,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:44:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131495769] [2022-07-22 23:44:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:44:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:44:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:44:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:44:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:44:52,280 INFO L87 Difference]: Start difference. First operand 4048 states and 5650 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 23:44:55,473 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 [] [2022-07-22 23:45:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:00,285 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2022-07-22 23:45:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:45:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2022-07-22 23:45:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:00,328 INFO L225 Difference]: With dead ends: 12746 [2022-07-22 23:45:00,328 INFO L226 Difference]: Without dead ends: 8719 [2022-07-22 23:45:00,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:00,342 INFO L413 NwaCegarLoop]: 3098 mSDtfsCounter, 3824 mSDsluCounter, 3535 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 1358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 6633 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:00,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4155 Valid, 6633 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1358 Valid, 2107 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-07-22 23:45:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2022-07-22 23:45:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2022-07-22 23:45:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7670 states, 5584 states have (on average 1.3273638968481376) internal successors, (7412), 5665 states have internal predecessors, (7412), 1627 states have call successors, (1627), 459 states have call predecessors, (1627), 458 states have return successors, (1620), 1575 states have call predecessors, (1620), 1620 states have call successors, (1620) [2022-07-22 23:45:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2022-07-22 23:45:00,575 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2022-07-22 23:45:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:00,577 INFO L495 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2022-07-22 23:45:00,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 23:45:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2022-07-22 23:45:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 23:45:00,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:00,582 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:00,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:45:00,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2022-07-22 23:45:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:00,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606229434] [2022-07-22 23:45:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:00,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 23:45:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:45:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 23:45:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606229434] [2022-07-22 23:45:00,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606229434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:00,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:00,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:45:00,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30716273] [2022-07-22 23:45:00,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:00,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:00,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:00,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:00,871 INFO L87 Difference]: Start difference. First operand 7670 states and 10659 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:04,410 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 [] [2022-07-22 23:45:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:13,095 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2022-07-22 23:45:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:45:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-07-22 23:45:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:13,209 INFO L225 Difference]: With dead ends: 29996 [2022-07-22 23:45:13,210 INFO L226 Difference]: Without dead ends: 22347 [2022-07-22 23:45:13,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:13,256 INFO L413 NwaCegarLoop]: 3174 mSDtfsCounter, 7740 mSDsluCounter, 4575 mSDsCounter, 0 mSdLazyCounter, 4358 mSolverCounterSat, 4150 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8190 SdHoareTripleChecker+Valid, 7749 SdHoareTripleChecker+Invalid, 8509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4150 IncrementalHoareTripleChecker+Valid, 4358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:13,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8190 Valid, 7749 Invalid, 8509 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4150 Valid, 4358 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-07-22 23:45:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2022-07-22 23:45:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2022-07-22 23:45:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15170 states, 11050 states have (on average 1.3270588235294118) internal successors, (14664), 11207 states have internal predecessors, (14664), 3207 states have call successors, (3207), 913 states have call predecessors, (3207), 912 states have return successors, (3200), 3109 states have call predecessors, (3200), 3200 states have call successors, (3200) [2022-07-22 23:45:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2022-07-22 23:45:13,897 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2022-07-22 23:45:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:13,897 INFO L495 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2022-07-22 23:45:13,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2022-07-22 23:45:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 23:45:13,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:13,902 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:13,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:45:13,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:13,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2022-07-22 23:45:13,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:13,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821753761] [2022-07-22 23:45:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:13,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:45:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:45:14,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821753761] [2022-07-22 23:45:14,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821753761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:14,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:14,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:45:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424637645] [2022-07-22 23:45:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:14,151 INFO L87 Difference]: Start difference. First operand 15170 states and 21071 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 23:45:16,776 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 [] [2022-07-22 23:45:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:26,158 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2022-07-22 23:45:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:45:26,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2022-07-22 23:45:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:26,425 INFO L225 Difference]: With dead ends: 58956 [2022-07-22 23:45:26,426 INFO L226 Difference]: Without dead ends: 43807 [2022-07-22 23:45:26,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:26,500 INFO L413 NwaCegarLoop]: 3072 mSDtfsCounter, 7612 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 4113 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8046 SdHoareTripleChecker+Valid, 7713 SdHoareTripleChecker+Invalid, 8518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4113 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:26,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8046 Valid, 7713 Invalid, 8518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4113 Valid, 4404 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-07-22 23:45:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2022-07-22 23:45:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2022-07-22 23:45:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38538 states, 28142 states have (on average 1.3164664913652193) internal successors, (37048), 28354 states have internal predecessors, (37048), 7991 states have call successors, (7991), 1797 states have call predecessors, (7991), 2404 states have return successors, (10352), 8534 states have call predecessors, (10352), 7984 states have call successors, (10352) [2022-07-22 23:45:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2022-07-22 23:45:28,087 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2022-07-22 23:45:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:28,088 INFO L495 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2022-07-22 23:45:28,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 23:45:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2022-07-22 23:45:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 23:45:28,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:28,094 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:28,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:45:28,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:28,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2022-07-22 23:45:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949949002] [2022-07-22 23:45:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:45:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:45:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:45:28,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:28,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949949002] [2022-07-22 23:45:28,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949949002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:28,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:28,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:45:28,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732827056] [2022-07-22 23:45:28,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:28,683 INFO L87 Difference]: Start difference. First operand 38538 states and 55391 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:37,193 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2022-07-22 23:45:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:45:37,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-07-22 23:45:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:37,799 INFO L225 Difference]: With dead ends: 129915 [2022-07-22 23:45:37,799 INFO L226 Difference]: Without dead ends: 91398 [2022-07-22 23:45:38,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:45:38,028 INFO L413 NwaCegarLoop]: 3302 mSDtfsCounter, 5910 mSDsluCounter, 4014 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 2839 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6219 SdHoareTripleChecker+Valid, 7316 SdHoareTripleChecker+Invalid, 4992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2839 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:38,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6219 Valid, 7316 Invalid, 4992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2839 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-22 23:45:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2022-07-22 23:45:41,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2022-07-22 23:45:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83018 states, 60770 states have (on average 1.3114530195820306) internal successors, (79697), 61116 states have internal predecessors, (79697), 16759 states have call successors, (16759), 3593 states have call predecessors, (16759), 5488 states have return successors, (29268), 18636 states have call predecessors, (29268), 16752 states have call successors, (29268) [2022-07-22 23:45:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2022-07-22 23:45:42,160 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2022-07-22 23:45:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:42,161 INFO L495 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2022-07-22 23:45:42,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2022-07-22 23:45:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 23:45:42,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:42,163 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:45:42,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:42,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2022-07-22 23:45:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:42,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087574545] [2022-07-22 23:45:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:45:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:45:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:45:42,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087574545] [2022-07-22 23:45:42,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087574545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:42,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:42,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:45:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460287264] [2022-07-22 23:45:42,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:42,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:45:42,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:45:42,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:45:42,411 INFO L87 Difference]: Start difference. First operand 83018 states and 125724 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:45:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:55,254 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2022-07-22 23:45:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:45:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-07-22 23:45:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:56,707 INFO L225 Difference]: With dead ends: 265587 [2022-07-22 23:45:56,707 INFO L226 Difference]: Without dead ends: 182590 [2022-07-22 23:45:57,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:45:57,529 INFO L413 NwaCegarLoop]: 3473 mSDtfsCounter, 5664 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 2730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5981 SdHoareTripleChecker+Valid, 7586 SdHoareTripleChecker+Invalid, 4914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2730 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:57,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5981 Valid, 7586 Invalid, 4914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2730 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-22 23:45:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2022-07-22 23:46:04,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2022-07-22 23:46:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167915 states, 122891 states have (on average 1.3083871072739257) internal successors, (160789), 123505 states have internal predecessors, (160789), 33751 states have call successors, (33751), 7185 states have call predecessors, (33751), 11272 states have return successors, (74860), 37880 states have call predecessors, (74860), 33744 states have call successors, (74860) [2022-07-22 23:46:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2022-07-22 23:46:06,771 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2022-07-22 23:46:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:06,771 INFO L495 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2022-07-22 23:46:06,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:46:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2022-07-22 23:46:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 23:46:06,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:06,774 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:06,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:46:06,775 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:06,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:06,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2022-07-22 23:46:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:06,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182761663] [2022-07-22 23:46:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:46:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:46:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:46:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:46:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:46:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:07,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182761663] [2022-07-22 23:46:07,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182761663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:07,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:07,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:46:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547215529] [2022-07-22 23:46:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:07,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:46:07,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:46:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:46:07,331 INFO L87 Difference]: Start difference. First operand 167915 states and 269400 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:46:10,017 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 [] [2022-07-22 23:46:22,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:22,606 INFO L93 Difference]: Finished difference Result 182588 states and 299012 transitions. [2022-07-22 23:46:22,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:46:22,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-07-22 23:46:22,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:24,105 INFO L225 Difference]: With dead ends: 182588 [2022-07-22 23:46:24,105 INFO L226 Difference]: Without dead ends: 182585 [2022-07-22 23:46:24,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:46:24,244 INFO L413 NwaCegarLoop]: 3463 mSDtfsCounter, 4427 mSDsluCounter, 5554 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 1582 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4744 SdHoareTripleChecker+Valid, 9017 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:24,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4744 Valid, 9017 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1582 Valid, 3177 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-07-22 23:46:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182585 states. [2022-07-22 23:46:30,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182585 to 167916. [2022-07-22 23:46:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167916 states, 122892 states have (on average 1.308384597858282) internal successors, (160790), 123506 states have internal predecessors, (160790), 33751 states have call successors, (33751), 7185 states have call predecessors, (33751), 11272 states have return successors, (74860), 37880 states have call predecessors, (74860), 33744 states have call successors, (74860) [2022-07-22 23:46:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167916 states to 167916 states and 269401 transitions. [2022-07-22 23:46:32,690 INFO L78 Accepts]: Start accepts. Automaton has 167916 states and 269401 transitions. Word has length 94 [2022-07-22 23:46:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:32,690 INFO L495 AbstractCegarLoop]: Abstraction has 167916 states and 269401 transitions. [2022-07-22 23:46:32,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 23:46:32,691 INFO L276 IsEmpty]: Start isEmpty. Operand 167916 states and 269401 transitions. [2022-07-22 23:46:32,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 23:46:32,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:32,693 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:32,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:46:32,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1575598713, now seen corresponding path program 1 times [2022-07-22 23:46:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:32,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203640826] [2022-07-22 23:46:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:46:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:46:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:46:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 23:46:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 23:46:32,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:32,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203640826] [2022-07-22 23:46:32,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203640826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:32,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:32,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:46:32,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516085652] [2022-07-22 23:46:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:32,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:46:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:46:32,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:46:32,892 INFO L87 Difference]: Start difference. First operand 167916 states and 269401 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)