./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 35987657 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-?-3598765 [2022-07-21 11:02:26,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:02:26,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:02:26,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:02:26,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:02:26,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:02:26,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:02:26,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:02:26,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:02:26,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:02:26,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:02:26,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:02:26,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:02:26,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:02:26,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:02:26,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:02:26,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:02:26,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:02:26,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:02:26,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:02:26,718 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:02:26,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:02:26,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:02:26,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:02:26,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:02:26,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:02:26,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:02:26,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:02:26,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:02:26,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:02:26,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:02:26,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:02:26,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:02:26,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:02:26,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:02:26,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:02:26,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:02:26,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:02:26,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:02:26,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:02:26,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:02:26,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:02:26,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:02:26,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:02:26,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:02:26,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:02:26,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:02:26,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:02:26,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:02:26,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:02:26,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:02:26,781 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:02:26,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:02:26,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:02:26,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:02:26,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:02:26,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:02:26,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:02:26,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:02:26,783 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:02:26,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:02:26,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:02:26,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:02:26,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:02:26,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:02:26,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:02:26,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:02:26,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2022-07-21 11:02:27,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:02:27,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:02:27,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:02:27,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:02:27,076 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:02:27,077 INFO L432 ainManager$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 [2022-07-21 11:02:27,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa1074c3/7068807b3c54446f8c2bdeee8a59642e/FLAGefcd77f6d [2022-07-21 11:02:27,781 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:02:27,782 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 [2022-07-21 11:02:27,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa1074c3/7068807b3c54446f8c2bdeee8a59642e/FLAGefcd77f6d [2022-07-21 11:02:28,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fa1074c3/7068807b3c54446f8c2bdeee8a59642e [2022-07-21 11:02:28,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:02:28,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:02:28,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:02:28,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:02:28,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:02:28,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:02:28" (1/1) ... [2022-07-21 11:02:28,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32704a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:28, skipping insertion in model container [2022-07-21 11:02:28,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:02:28" (1/1) ... [2022-07-21 11:02:28,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:02:28,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:02:29,240 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] [2022-07-21 11:02:30,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:02:30,291 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:02:30,380 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] [2022-07-21 11:02:30,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:02:30,815 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:02:30,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30 WrapperNode [2022-07-21 11:02:30,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:02:30,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:02:30,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:02:30,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:02:30,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:30,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,114 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2022-07-21 11:02:31,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:02:31,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:02:31,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:02:31,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:02:31,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:02:31,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:02:31,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:02:31,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:02:31,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (1/1) ... [2022-07-21 11:02:31,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:02:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:02:31,505 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) [2022-07-21 11:02:31,519 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 [2022-07-21 11:02:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2022-07-21 11:02:31,549 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2022-07-21 11:02:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2022-07-21 11:02:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2022-07-21 11:02:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2022-07-21 11:02:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2022-07-21 11:02:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2022-07-21 11:02:31,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2022-07-21 11:02:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-21 11:02:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-07-21 11:02:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2022-07-21 11:02:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2022-07-21 11:02:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2022-07-21 11:02:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2022-07-21 11:02:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:02:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:02:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-21 11:02:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-21 11:02:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2022-07-21 11:02:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2022-07-21 11:02:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2022-07-21 11:02:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2022-07-21 11:02:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2022-07-21 11:02:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2022-07-21 11:02:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-21 11:02:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-21 11:02:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2022-07-21 11:02:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2022-07-21 11:02:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 11:02:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 11:02:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-21 11:02:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-21 11:02:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2022-07-21 11:02:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2022-07-21 11:02:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:02:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:02:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-21 11:02:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-21 11:02:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-21 11:02:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-21 11:02:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-07-21 11:02:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-07-21 11:02:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2022-07-21 11:02:31,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2022-07-21 11:02:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2022-07-21 11:02:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2022-07-21 11:02:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2022-07-21 11:02:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2022-07-21 11:02:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:02:31,556 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:02:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:02:31,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:02:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-07-21 11:02:31,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-07-21 11:02:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2022-07-21 11:02:31,557 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2022-07-21 11:02:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2022-07-21 11:02:31,557 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2022-07-21 11:02:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-21 11:02:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-21 11:02:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2022-07-21 11:02:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2022-07-21 11:02:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 11:02:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 11:02:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:02:31,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:02:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2022-07-21 11:02:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2022-07-21 11:02:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2022-07-21 11:02:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2022-07-21 11:02:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2022-07-21 11:02:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2022-07-21 11:02:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2022-07-21 11:02:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2022-07-21 11:02:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2022-07-21 11:02:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2022-07-21 11:02:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2022-07-21 11:02:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2022-07-21 11:02:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-07-21 11:02:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-07-21 11:02:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-21 11:02:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-21 11:02:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:02:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:02:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:02:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 11:02:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 11:02:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2022-07-21 11:02:31,561 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2022-07-21 11:02:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2022-07-21 11:02:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2022-07-21 11:02:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2022-07-21 11:02:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2022-07-21 11:02:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2022-07-21 11:02:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2022-07-21 11:02:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-07-21 11:02:31,562 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-07-21 11:02:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:02:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-21 11:02:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-21 11:02:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-21 11:02:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2022-07-21 11:02:31,563 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2022-07-21 11:02:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2022-07-21 11:02:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2022-07-21 11:02:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-07-21 11:02:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-07-21 11:02:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 11:02:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 11:02:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-07-21 11:02:31,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-07-21 11:02:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2022-07-21 11:02:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2022-07-21 11:02:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:02:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:02:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2022-07-21 11:02:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2022-07-21 11:02:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-21 11:02:31,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-21 11:02:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-21 11:02:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-21 11:02:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 11:02:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 11:02:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2022-07-21 11:02:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2022-07-21 11:02:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2022-07-21 11:02:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2022-07-21 11:02:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 11:02:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 11:02:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 11:02:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 11:02:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 11:02:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 11:02:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2022-07-21 11:02:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2022-07-21 11:02:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2022-07-21 11:02:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2022-07-21 11:02:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-07-21 11:02:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-07-21 11:02:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-07-21 11:02:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-07-21 11:02:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2022-07-21 11:02:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2022-07-21 11:02:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2022-07-21 11:02:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2022-07-21 11:02:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:02:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:02:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2022-07-21 11:02:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2022-07-21 11:02:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:02:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:02:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-07-21 11:02:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-07-21 11:02:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-07-21 11:02:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-07-21 11:02:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2022-07-21 11:02:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2022-07-21 11:02:31,570 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2022-07-21 11:02:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2022-07-21 11:02:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-07-21 11:02:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-07-21 11:02:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:02:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2022-07-21 11:02:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2022-07-21 11:02:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-21 11:02:31,571 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-21 11:02:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2022-07-21 11:02:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2022-07-21 11:02:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:02:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:02:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2022-07-21 11:02:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2022-07-21 11:02:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2022-07-21 11:02:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2022-07-21 11:02:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 11:02:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 11:02:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 11:02:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 11:02:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-07-21 11:02:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-07-21 11:02:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2022-07-21 11:02:31,573 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2022-07-21 11:02:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:02:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:02:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2022-07-21 11:02:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2022-07-21 11:02:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2022-07-21 11:02:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2022-07-21 11:02:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-21 11:02:31,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2022-07-21 11:02:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:02:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2022-07-21 11:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2022-07-21 11:02:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2022-07-21 11:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2022-07-21 11:02:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-21 11:02:31,575 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-07-21 11:02:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:02:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2022-07-21 11:02:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2022-07-21 11:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2022-07-21 11:02:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2022-07-21 11:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2022-07-21 11:02:31,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2022-07-21 11:02:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2022-07-21 11:02:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2022-07-21 11:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 11:02:31,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 11:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:02:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2022-07-21 11:02:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2022-07-21 11:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2022-07-21 11:02:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2022-07-21 11:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:02:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-21 11:02:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-21 11:02:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2022-07-21 11:02:31,578 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2022-07-21 11:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-07-21 11:02:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-07-21 11:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2022-07-21 11:02:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2022-07-21 11:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2022-07-21 11:02:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2022-07-21 11:02:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2022-07-21 11:02:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2022-07-21 11:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2022-07-21 11:02:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2022-07-21 11:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2022-07-21 11:02:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2022-07-21 11:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2022-07-21 11:02:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2022-07-21 11:02:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-07-21 11:02:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-07-21 11:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2022-07-21 11:02:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2022-07-21 11:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 11:02:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-21 11:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2022-07-21 11:02:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2022-07-21 11:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:02:31,581 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:02:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-21 11:02:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-21 11:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:02:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-21 11:02:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-21 11:02:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2022-07-21 11:02:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2022-07-21 11:02:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 11:02:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 11:02:32,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:02:32,264 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:02:32,612 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:02:33,180 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2022-07-21 11:02:38,961 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:02:38,982 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:02:38,983 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 11:02:38,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:02:38 BoogieIcfgContainer [2022-07-21 11:02:38,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:02:38,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:02:38,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:02:38,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:02:38,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:02:28" (1/3) ... [2022-07-21 11:02:38,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f07f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:02:38, skipping insertion in model container [2022-07-21 11:02:38,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:30" (2/3) ... [2022-07-21 11:02:38,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11f07f14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:02:38, skipping insertion in model container [2022-07-21 11:02:38,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:02:38" (3/3) ... [2022-07-21 11:02:38,995 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2022-07-21 11:02:39,007 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:02:39,008 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:02:39,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:02:39,118 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@77de6bac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@16e6a76 [2022-07-21 11:02:39,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:02:39,127 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) [2022-07-21 11:02:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 11:02:39,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:39,142 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] [2022-07-21 11:02:39,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:39,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:39,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2022-07-21 11:02:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:39,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700708223] [2022-07-21 11:02:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:02:39,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:39,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700708223] [2022-07-21 11:02:39,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700708223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:39,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:39,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:02:39,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308342772] [2022-07-21 11:02:39,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:02:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:40,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:02:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:02:40,011 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) [2022-07-21 11:02:43,401 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 [] [2022-07-21 11:02:48,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:48,857 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2022-07-21 11:02:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:02:48,861 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 [2022-07-21 11:02:48,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:48,905 INFO L225 Difference]: With dead ends: 6691 [2022-07-21 11:02:48,906 INFO L226 Difference]: Without dead ends: 4554 [2022-07-21 11:02:48,925 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 [2022-07-21 11:02:48,929 INFO L413 NwaCegarLoop]: 3154 mSDtfsCounter, 4027 mSDsluCounter, 3663 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 1412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 6817 SdHoareTripleChecker+Invalid, 3428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:48,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 6817 Invalid, 3428 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1412 Valid, 2015 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-07-21 11:02:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2022-07-21 11:02:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2022-07-21 11:02:49,146 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) [2022-07-21 11:02:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2022-07-21 11:02:49,179 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2022-07-21 11:02:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:49,180 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2022-07-21 11:02:49,181 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) [2022-07-21 11:02:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2022-07-21 11:02:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 11:02:49,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:49,192 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] [2022-07-21 11:02:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:02:49,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2022-07-21 11:02:49,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:49,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658208748] [2022-07-21 11:02:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 11:02:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:02:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:02:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:49,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658208748] [2022-07-21 11:02:49,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658208748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:49,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:49,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:02:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023690909] [2022-07-21 11:02:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:02:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:02:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:02:49,559 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) [2022-07-21 11:02:52,861 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 [] [2022-07-21 11:02:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:57,638 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2022-07-21 11:02:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:02:57,639 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 [2022-07-21 11:02:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:57,688 INFO L225 Difference]: With dead ends: 12746 [2022-07-21 11:02:57,688 INFO L226 Difference]: Without dead ends: 8719 [2022-07-21 11:02:57,710 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 [2022-07-21 11:02:57,711 INFO L413 NwaCegarLoop]: 3100 mSDtfsCounter, 3824 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 1358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4153 SdHoareTripleChecker+Valid, 6637 SdHoareTripleChecker+Invalid, 3466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:57,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4153 Valid, 6637 Invalid, 3466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1358 Valid, 2107 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2022-07-21 11:02:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2022-07-21 11:02:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2022-07-21 11:02:57,928 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) [2022-07-21 11:02:57,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2022-07-21 11:02:57,953 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2022-07-21 11:02:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:57,954 INFO L495 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2022-07-21 11:02:57,955 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) [2022-07-21 11:02:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2022-07-21 11:02:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 11:02:57,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:57,960 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] [2022-07-21 11:02:57,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:02:57,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:57,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2022-07-21 11:02:57,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:57,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586072848] [2022-07-21 11:02:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:57,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:02:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:02:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:02:58,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586072848] [2022-07-21 11:02:58,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586072848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:58,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:58,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:02:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702510001] [2022-07-21 11:02:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:58,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:02:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:58,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:02:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:02:58,229 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) [2022-07-21 11:03:01,753 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 [] [2022-07-21 11:03:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:11,117 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2022-07-21 11:03:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:03:11,118 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 [2022-07-21 11:03:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:11,236 INFO L225 Difference]: With dead ends: 29996 [2022-07-21 11:03:11,236 INFO L226 Difference]: Without dead ends: 22347 [2022-07-21 11:03:11,280 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 [2022-07-21 11:03:11,285 INFO L413 NwaCegarLoop]: 3161 mSDtfsCounter, 7746 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 4346 mSolverCounterSat, 4141 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8205 SdHoareTripleChecker+Valid, 7723 SdHoareTripleChecker+Invalid, 8488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4141 IncrementalHoareTripleChecker+Valid, 4346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:11,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8205 Valid, 7723 Invalid, 8488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4141 Valid, 4346 Invalid, 1 Unknown, 0 Unchecked, 12.2s Time] [2022-07-21 11:03:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2022-07-21 11:03:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2022-07-21 11:03:11,877 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) [2022-07-21 11:03:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2022-07-21 11:03:11,929 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2022-07-21 11:03:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:11,930 INFO L495 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2022-07-21 11:03:11,931 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) [2022-07-21 11:03:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2022-07-21 11:03:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 11:03:11,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:11,935 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] [2022-07-21 11:03:11,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:03:11,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2022-07-21 11:03:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154116468] [2022-07-21 11:03:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:11,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 11:03:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:03:12,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:12,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154116468] [2022-07-21 11:03:12,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154116468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:12,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:12,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:03:12,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637911900] [2022-07-21 11:03:12,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:12,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:03:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:03:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:03:12,186 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) [2022-07-21 11:03:14,768 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 [] [2022-07-21 11:03:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:24,873 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2022-07-21 11:03:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:03:24,874 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 [2022-07-21 11:03:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:25,105 INFO L225 Difference]: With dead ends: 58956 [2022-07-21 11:03:25,106 INFO L226 Difference]: Without dead ends: 43807 [2022-07-21 11:03:25,169 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 [2022-07-21 11:03:25,171 INFO L413 NwaCegarLoop]: 3059 mSDtfsCounter, 7625 mSDsluCounter, 4615 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 4135 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8066 SdHoareTripleChecker+Valid, 7674 SdHoareTripleChecker+Invalid, 8527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4135 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:25,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8066 Valid, 7674 Invalid, 8527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4135 Valid, 4391 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-07-21 11:03:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2022-07-21 11:03:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2022-07-21 11:03:26,413 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) [2022-07-21 11:03:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2022-07-21 11:03:26,638 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2022-07-21 11:03:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2022-07-21 11:03:26,638 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) [2022-07-21 11:03:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2022-07-21 11:03:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 11:03:26,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:26,645 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] [2022-07-21 11:03:26,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:03:26,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2022-07-21 11:03:26,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:26,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947772238] [2022-07-21 11:03:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:03:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 11:03:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:03:26,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:26,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947772238] [2022-07-21 11:03:26,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947772238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:26,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:26,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:03:26,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327857007] [2022-07-21 11:03:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:26,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:03:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:03:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:03:26,994 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) [2022-07-21 11:03:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:35,504 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2022-07-21 11:03:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:03:35,505 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 [2022-07-21 11:03:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:36,463 INFO L225 Difference]: With dead ends: 129915 [2022-07-21 11:03:36,463 INFO L226 Difference]: Without dead ends: 91398 [2022-07-21 11:03:36,736 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 [2022-07-21 11:03:36,737 INFO L413 NwaCegarLoop]: 3295 mSDtfsCounter, 5910 mSDsluCounter, 4000 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 2841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6219 SdHoareTripleChecker+Valid, 7295 SdHoareTripleChecker+Invalid, 4992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2841 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:36,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6219 Valid, 7295 Invalid, 4992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2841 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-21 11:03:36,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2022-07-21 11:03:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2022-07-21 11:03:39,535 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) [2022-07-21 11:03:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2022-07-21 11:03:40,555 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2022-07-21 11:03:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:40,556 INFO L495 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2022-07-21 11:03:40,557 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) [2022-07-21 11:03:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2022-07-21 11:03:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 11:03:40,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:40,559 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] [2022-07-21 11:03:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:03:40,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2022-07-21 11:03:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:40,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229588602] [2022-07-21 11:03:40,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:40,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:03:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 11:03:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:03:40,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229588602] [2022-07-21 11:03:40,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229588602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:40,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:40,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:03:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330847784] [2022-07-21 11:03:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:40,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:03:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:03:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:03:40,809 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) [2022-07-21 11:03:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:53,860 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2022-07-21 11:03:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:03:53,861 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 [2022-07-21 11:03:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:55,714 INFO L225 Difference]: With dead ends: 265587 [2022-07-21 11:03:55,715 INFO L226 Difference]: Without dead ends: 182590 [2022-07-21 11:03:56,505 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 [2022-07-21 11:03:56,506 INFO L413 NwaCegarLoop]: 3476 mSDtfsCounter, 5662 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 2726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5978 SdHoareTripleChecker+Valid, 7590 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2726 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:56,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5978 Valid, 7590 Invalid, 4911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2726 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-21 11:03:56,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2022-07-21 11:04:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2022-07-21 11:04:03,498 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) [2022-07-21 11:04:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2022-07-21 11:04:05,551 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2022-07-21 11:04:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:05,553 INFO L495 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2022-07-21 11:04:05,553 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) [2022-07-21 11:04:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2022-07-21 11:04:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-21 11:04:05,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:05,580 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] [2022-07-21 11:04:05,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:04:05,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2022-07-21 11:04:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:05,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179853288] [2022-07-21 11:04:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:05,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:04:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:04:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:04:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 11:04:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:04:05,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:05,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179853288] [2022-07-21 11:04:05,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179853288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:05,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:05,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:04:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13224992] [2022-07-21 11:04:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:05,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:04:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:04:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:04:05,882 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) [2022-07-21 11:04:08,487 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 [] [2022-07-21 11:04:20,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:20,341 INFO L93 Difference]: Finished difference Result 182588 states and 299012 transitions. [2022-07-21 11:04:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:04:20,342 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 [2022-07-21 11:04:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:21,556 INFO L225 Difference]: With dead ends: 182588 [2022-07-21 11:04:21,558 INFO L226 Difference]: Without dead ends: 182585 [2022-07-21 11:04:21,672 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 [2022-07-21 11:04:21,673 INFO L413 NwaCegarLoop]: 3474 mSDtfsCounter, 4429 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 1582 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 9035 SdHoareTripleChecker+Invalid, 4765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 9035 Invalid, 4765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1582 Valid, 3182 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-07-21 11:04:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182585 states. [2022-07-21 11:04:28,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182585 to 167916. [2022-07-21 11:04:28,253 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) [2022-07-21 11:04:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167916 states to 167916 states and 269401 transitions. [2022-07-21 11:04:30,363 INFO L78 Accepts]: Start accepts. Automaton has 167916 states and 269401 transitions. Word has length 94 [2022-07-21 11:04:30,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:30,364 INFO L495 AbstractCegarLoop]: Abstraction has 167916 states and 269401 transitions. [2022-07-21 11:04:30,364 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) [2022-07-21 11:04:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 167916 states and 269401 transitions. [2022-07-21 11:04:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 11:04:30,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:30,366 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] [2022-07-21 11:04:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:04:30,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:30,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1575598713, now seen corresponding path program 1 times [2022-07-21 11:04:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:30,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958532953] [2022-07-21 11:04:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:30,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:04:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:04:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 11:04:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 11:04:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 11:04:30,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:30,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958532953] [2022-07-21 11:04:30,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958532953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:30,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:30,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:04:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116978001] [2022-07-21 11:04:30,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:04:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:04:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:04:30,919 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)