./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-tmp.no-commuhash-c3fed41 [2021-12-18 03:59:31,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:59:31,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:59:31,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:59:31,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:59:31,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:59:31,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:59:31,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:59:31,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:59:31,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:59:31,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:59:31,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:59:31,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:59:31,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:59:31,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:59:31,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:59:31,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:59:31,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:59:31,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:59:31,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:59:31,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:59:31,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:59:31,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:59:31,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:59:31,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:59:31,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:59:31,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:59:31,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:59:31,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:59:31,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:59:31,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:59:31,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:59:31,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:59:31,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:59:31,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:59:31,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:59:31,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:59:31,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:59:31,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:59:31,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:59:31,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:59:31,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:59:31,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:59:31,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:59:31,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:59:31,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:59:31,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:59:31,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:59:31,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:59:31,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:59:31,857 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:59:31,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:59:31,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:59:31,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:59:31,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:59:31,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:59:31,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:59:31,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:59:31,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:59:31,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:59:31,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:59:31,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:59:31,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:59:31,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:59:31,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:59:31,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:59:31,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:59:31,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:59:31,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:59:31,863 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:59:31,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:59:31,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:59:31,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:59:31,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4437765aefc9e8e96e3710e0e55c61aa0f0e29783186331c7ab028aba8558a0d [2021-12-18 03:59:32,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:59:32,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:59:32,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:59:32,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:59:32,102 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:59:32,103 INFO L432 ainManager$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 [2021-12-18 03:59:32,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17150d5fc/802b3fced8c8464ba6c564b102cb83ad/FLAG42d810680 [2021-12-18 03:59:32,858 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:59:32,859 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 [2021-12-18 03:59:32,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17150d5fc/802b3fced8c8464ba6c564b102cb83ad/FLAG42d810680 [2021-12-18 03:59:32,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17150d5fc/802b3fced8c8464ba6c564b102cb83ad [2021-12-18 03:59:32,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:59:32,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:59:32,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:59:32,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:59:32,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:59:32,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:59:32" (1/1) ... [2021-12-18 03:59:32,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c79dc33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:32, skipping insertion in model container [2021-12-18 03:59:32,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:59:32" (1/1) ... [2021-12-18 03:59:32,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:59:33,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:59:33,877 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] [2021-12-18 03:59:34,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:59:34,683 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:59:34,777 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] [2021-12-18 03:59:35,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:59:35,223 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:59:35,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35 WrapperNode [2021-12-18 03:59:35,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:59:35,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:59:35,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:59:35,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:59:35,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,507 INFO L137 Inliner]: procedures = 371, calls = 3017, calls flagged for inlining = 198, calls inlined = 180, statements flattened = 6286 [2021-12-18 03:59:35,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:59:35,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:59:35,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:59:35,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:59:35,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:59:35,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:59:35,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:59:35,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:59:35,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (1/1) ... [2021-12-18 03:59:35,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:59:35,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:59:35,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 03:59:35,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 03:59:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure serial_break [2021-12-18 03:59:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_break [2021-12-18 03:59:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure serial_proc_open [2021-12-18 03:59:35,933 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_proc_open [2021-12-18 03:59:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_throttle [2021-12-18 03:59:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_throttle [2021-12-18 03:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_start [2021-12-18 03:59:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_start [2021-12-18 03:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-18 03:59:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-18 03:59:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_14 [2021-12-18 03:59:35,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_14 [2021-12-18 03:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-12-18 03:59:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-12-18 03:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 03:59:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 03:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-18 03:59:35,935 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-18 03:59:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_dtr_rts [2021-12-18 03:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_dtr_rts [2021-12-18 03:59:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_remove [2021-12-18 03:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_remove [2021-12-18 03:59:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_show [2021-12-18 03:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_show [2021-12-18 03:59:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-18 03:59:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-18 03:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write [2021-12-18 03:59:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write [2021-12-18 03:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 03:59:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 03:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-18 03:59:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-18 03:59:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure serial_chars_in_buffer [2021-12-18 03:59:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_chars_in_buffer [2021-12-18 03:59:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:59:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:59:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-18 03:59:35,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-18 03:59:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-18 03:59:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-18 03:59:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2021-12-18 03:59:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2021-12-18 03:59:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_5 [2021-12-18 03:59:35,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_5 [2021-12-18 03:59:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_activate [2021-12-18 03:59:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_activate [2021-12-18 03:59:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-18 03:59:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-18 03:59:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 03:59:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 03:59:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:59:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:59:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-12-18 03:59:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-12-18 03:59:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2021-12-18 03:59:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2021-12-18 03:59:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure usb_store_new_id [2021-12-18 03:59:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_store_new_id [2021-12-18 03:59:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-18 03:59:35,943 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-18 03:59:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2021-12-18 03:59:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2021-12-18 03:59:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-18 03:59:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-18 03:59:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 03:59:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 03:59:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_poison_urbs [2021-12-18 03:59:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_poison_urbs [2021-12-18 03:59:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure serial_hangup [2021-12-18 03:59:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_hangup [2021-12-18 03:59:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure serial_ioctl [2021-12-18 03:59:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_ioctl [2021-12-18 03:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write_room [2021-12-18 03:59:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write_room [2021-12-18 03:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure new_id_store [2021-12-18 03:59:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure new_id_store [2021-12-18 03:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___2 [2021-12-18 03:59:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___2 [2021-12-18 03:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-18 03:59:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-18 03:59:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 03:59:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-18 03:59:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 03:59:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 03:59:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:59:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 03:59:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 03:59:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure serial_unthrottle [2021-12-18 03:59:35,948 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_unthrottle [2021-12-18 03:59:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unpoison_urb [2021-12-18 03:59:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unpoison_urb [2021-12-18 03:59:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urbs [2021-12-18 03:59:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urbs [2021-12-18 03:59:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_probe [2021-12-18 03:59:35,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_probe [2021-12-18 03:59:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-12-18 03:59:35,950 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-12-18 03:59:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:59:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 03:59:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 03:59:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-18 03:59:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure serial_get_icount [2021-12-18 03:59:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_get_icount [2021-12-18 03:59:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure serial_throttle [2021-12-18 03:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_throttle [2021-12-18 03:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-18 03:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-18 03:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 03:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 03:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-18 03:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-18 03:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_submit_read_urb [2021-12-18 03:59:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_submit_read_urb [2021-12-18 03:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get [2021-12-18 03:59:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get [2021-12-18 03:59:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 03:59:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-18 03:59:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-18 03:59:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-18 03:59:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 03:59:35,957 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 03:59:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_resume [2021-12-18 03:59:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_resume [2021-12-18 03:59:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure serial_cleanup [2021-12-18 03:59:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_cleanup [2021-12-18 03:59:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 03:59:35,964 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 03:59:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 03:59:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 03:59:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 03:59:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 03:59:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_carrier_raised [2021-12-18 03:59:35,965 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_carrier_raised [2021-12-18 03:59:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-18 03:59:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-18 03:59:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-18 03:59:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-18 03:59:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 03:59:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 03:59:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmget [2021-12-18 03:59:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmget [2021-12-18 03:59:35,966 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_write_bulk_callback [2021-12-18 03:59:35,966 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_write_bulk_callback [2021-12-18 03:59:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 03:59:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 03:59:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2021-12-18 03:59:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2021-12-18 03:59:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 03:59:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 03:59:35,967 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-12-18 03:59:35,967 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-12-18 03:59:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2021-12-18 03:59:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2021-12-18 03:59:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_reset_resume [2021-12-18 03:59:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_reset_resume [2021-12-18 03:59:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_read_bulk_callback [2021-12-18 03:59:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_read_bulk_callback [2021-12-18 03:59:35,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2021-12-18 03:59:35,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2021-12-18 03:59:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:59:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2021-12-18 03:59:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2021-12-18 03:59:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-18 03:59:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-18 03:59:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure serial_wait_until_sent [2021-12-18 03:59:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_wait_until_sent [2021-12-18 03:59:35,969 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 03:59:35,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 03:59:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_device_match [2021-12-18 03:59:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_device_match [2021-12-18 03:59:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure serial_open [2021-12-18 03:59:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_open [2021-12-18 03:59:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 03:59:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 03:59:35,970 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 03:59:35,970 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 03:59:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-12-18 03:59:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-12-18 03:59:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_shutdown [2021-12-18 03:59:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_shutdown [2021-12-18 03:59:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 03:59:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 03:59:35,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_41 [2021-12-18 03:59:35,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_41 [2021-12-18 03:59:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_42 [2021-12-18 03:59:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_42 [2021-12-18 03:59:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-18 03:59:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~pm_message_t~0~TO~int [2021-12-18 03:59:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:59:35,972 INFO L130 BoogieDeclarations]: Found specification of procedure serial_set_termios [2021-12-18 03:59:35,972 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_set_termios [2021-12-18 03:59:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2021-12-18 03:59:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2021-12-18 03:59:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-12-18 03:59:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-12-18 03:59:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 03:59:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 03:59:35,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2021-12-18 03:59:35,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2021-12-18 03:59:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_unthrottle [2021-12-18 03:59:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_unthrottle [2021-12-18 03:59:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_port_get_by_minor [2021-12-18 03:59:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_port_get_by_minor [2021-12-18 03:59:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:59:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure serial_install [2021-12-18 03:59:35,974 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_install [2021-12-18 03:59:35,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:59:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-18 03:59:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-18 03:59:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:59:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 03:59:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_18 [2021-12-18 03:59:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_18 [2021-12-18 03:59:35,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_4 [2021-12-18 03:59:35,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_4 [2021-12-18 03:59:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:59:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 03:59:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 03:59:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 03:59:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure serial_tiocmset [2021-12-18 03:59:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_tiocmset [2021-12-18 03:59:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 03:59:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 03:59:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2021-12-18 03:59:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2021-12-18 03:59:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_22 [2021-12-18 03:59:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_22 [2021-12-18 03:59:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_put [2021-12-18 03:59:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_put [2021-12-18 03:59:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_unpoison_port_urbs [2021-12-18 03:59:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_unpoison_port_urbs [2021-12-18 03:59:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure serial_write [2021-12-18 03:59:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_write [2021-12-18 03:59:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-18 03:59:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-18 03:59:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-18 03:59:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-18 03:59:35,978 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_serial [2021-12-18 03:59:35,978 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_serial [2021-12-18 03:59:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 03:59:35,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 03:59:35,979 INFO L130 BoogieDeclarations]: Found specification of procedure get_iface_id [2021-12-18 03:59:35,979 INFO L138 BoogieDeclarations]: Found implementation of procedure get_iface_id [2021-12-18 03:59:35,980 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 03:59:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 03:59:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-18 03:59:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-18 03:59:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:59:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:59:35,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:59:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-18 03:59:35,984 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-18 03:59:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2021-12-18 03:59:35,985 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2021-12-18 03:59:35,985 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 03:59:35,985 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 03:59:36,744 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:59:36,748 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:59:37,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 03:59:37,712 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___2FINAL: assume true; [2021-12-18 03:59:43,557 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:59:43,574 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:59:43,574 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 03:59:43,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:59:43 BoogieIcfgContainer [2021-12-18 03:59:43,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:59:43,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:59:43,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:59:43,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:59:43,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:59:32" (1/3) ... [2021-12-18 03:59:43,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5222051f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:59:43, skipping insertion in model container [2021-12-18 03:59:43,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:59:35" (2/3) ... [2021-12-18 03:59:43,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5222051f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:59:43, skipping insertion in model container [2021-12-18 03:59:43,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:59:43" (3/3) ... [2021-12-18 03:59:43,585 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--serial--usbserial.ko-entry_point.cil.out.i [2021-12-18 03:59:43,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:59:43,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:59:43,635 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:59:43,641 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 03:59:43,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:59:43,699 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) [2021-12-18 03:59:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 03:59:43,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:59:43,710 INFO L514 BasicCegarLoop]: 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] [2021-12-18 03:59:43,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:59:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:59:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1989796788, now seen corresponding path program 1 times [2021-12-18 03:59:43,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:59:43,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522399143] [2021-12-18 03:59:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:59:43,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:59:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:59:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:59:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:59:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:59:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:59:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:59:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:59:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:59:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 03:59:44,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:59:44,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522399143] [2021-12-18 03:59:44,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522399143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:59:44,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:59:44,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:59:44,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165237301] [2021-12-18 03:59:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:59:44,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:59:44,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:59:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:59:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:59:44,440 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) [2021-12-18 03:59:47,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:59:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:59:52,905 INFO L93 Difference]: Finished difference Result 6691 states and 9849 transitions. [2021-12-18 03:59:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:59:52,907 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 [2021-12-18 03:59:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:59:52,964 INFO L225 Difference]: With dead ends: 6691 [2021-12-18 03:59:52,965 INFO L226 Difference]: Without dead ends: 4554 [2021-12-18 03:59:52,989 INFO L932 BasicCegarLoop]: 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 [2021-12-18 03:59:52,994 INFO L933 BasicCegarLoop]: 3160 mSDtfsCounter, 4027 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 1412 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4349 SdHoareTripleChecker+Valid, 7064 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:59:52,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4349 Valid, 7064 Invalid, 3185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1412 Valid, 1772 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-12-18 03:59:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2021-12-18 03:59:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 4048. [2021-12-18 03:59:53,329 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) [2021-12-18 03:59:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 5650 transitions. [2021-12-18 03:59:53,375 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 5650 transitions. Word has length 69 [2021-12-18 03:59:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:59:53,377 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 5650 transitions. [2021-12-18 03:59:53,377 INFO L471 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) [2021-12-18 03:59:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 5650 transitions. [2021-12-18 03:59:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-18 03:59:53,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:59:53,390 INFO L514 BasicCegarLoop]: 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] [2021-12-18 03:59:53,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:59:53,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:59:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:59:53,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2119451424, now seen corresponding path program 1 times [2021-12-18 03:59:53,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:59:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148152006] [2021-12-18 03:59:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:59:53,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:59:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 03:59:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 03:59:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 03:59:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 03:59:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 03:59:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 03:59:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 03:59:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:59:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 03:59:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 03:59:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:59:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 03:59:53,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:59:53,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148152006] [2021-12-18 03:59:53,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148152006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:59:53,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:59:53,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 03:59:53,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588626912] [2021-12-18 03:59:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:59:53,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 03:59:53,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:59:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 03:59:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 03:59:53,731 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) [2021-12-18 03:59:56,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:00:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:01,817 INFO L93 Difference]: Finished difference Result 12746 states and 17994 transitions. [2021-12-18 04:00:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:00:01,818 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 [2021-12-18 04:00:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:01,878 INFO L225 Difference]: With dead ends: 12746 [2021-12-18 04:00:01,878 INFO L226 Difference]: Without dead ends: 8719 [2021-12-18 04:00:01,904 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:00:01,905 INFO L933 BasicCegarLoop]: 3101 mSDtfsCounter, 3824 mSDsluCounter, 3781 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 1358 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4157 SdHoareTripleChecker+Valid, 6882 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1358 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:01,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4157 Valid, 6882 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1358 Valid, 1857 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-12-18 04:00:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2021-12-18 04:00:02,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 7670. [2021-12-18 04:00:02,197 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) [2021-12-18 04:00:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7670 states to 7670 states and 10659 transitions. [2021-12-18 04:00:02,230 INFO L78 Accepts]: Start accepts. Automaton has 7670 states and 10659 transitions. Word has length 89 [2021-12-18 04:00:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:02,232 INFO L470 AbstractCegarLoop]: Abstraction has 7670 states and 10659 transitions. [2021-12-18 04:00:02,232 INFO L471 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) [2021-12-18 04:00:02,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7670 states and 10659 transitions. [2021-12-18 04:00:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-18 04:00:02,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:02,237 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:00:02,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:00:02,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:02,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1481995065, now seen corresponding path program 1 times [2021-12-18 04:00:02,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234888487] [2021-12-18 04:00:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:02,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:00:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:00:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 04:00:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 04:00:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-18 04:00:02,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:02,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234888487] [2021-12-18 04:00:02,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234888487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:02,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:02,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:00:02,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772530600] [2021-12-18 04:00:02,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:02,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:00:02,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:02,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:00:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:00:02,549 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) [2021-12-18 04:00:06,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:00:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:14,103 INFO L93 Difference]: Finished difference Result 29996 states and 43373 transitions. [2021-12-18 04:00:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:00:14,105 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 [2021-12-18 04:00:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:14,244 INFO L225 Difference]: With dead ends: 29996 [2021-12-18 04:00:14,244 INFO L226 Difference]: Without dead ends: 22347 [2021-12-18 04:00:14,291 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:00:14,292 INFO L933 BasicCegarLoop]: 3172 mSDtfsCounter, 7742 mSDsluCounter, 4873 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 4147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8194 SdHoareTripleChecker+Valid, 8045 SdHoareTripleChecker+Invalid, 8196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4147 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:14,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8194 Valid, 8045 Invalid, 8196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4147 Valid, 4048 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-12-18 04:00:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2021-12-18 04:00:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 15170. [2021-12-18 04:00:15,080 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) [2021-12-18 04:00:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15170 states to 15170 states and 21071 transitions. [2021-12-18 04:00:15,150 INFO L78 Accepts]: Start accepts. Automaton has 15170 states and 21071 transitions. Word has length 97 [2021-12-18 04:00:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:15,150 INFO L470 AbstractCegarLoop]: Abstraction has 15170 states and 21071 transitions. [2021-12-18 04:00:15,151 INFO L471 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) [2021-12-18 04:00:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 15170 states and 21071 transitions. [2021-12-18 04:00:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-18 04:00:15,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:15,155 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:00:15,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 04:00:15,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1715328829, now seen corresponding path program 1 times [2021-12-18 04:00:15,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:15,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696655447] [2021-12-18 04:00:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:15,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:00:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:00:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 04:00:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:00:15,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696655447] [2021-12-18 04:00:15,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696655447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:15,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:15,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:00:15,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622417255] [2021-12-18 04:00:15,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:15,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:00:15,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:15,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:00:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:00:15,425 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) [2021-12-18 04:00:18,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:00:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:27,128 INFO L93 Difference]: Finished difference Result 58956 states and 86037 transitions. [2021-12-18 04:00:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:00:27,129 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 [2021-12-18 04:00:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:27,398 INFO L225 Difference]: With dead ends: 58956 [2021-12-18 04:00:27,398 INFO L226 Difference]: Without dead ends: 43807 [2021-12-18 04:00:27,491 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:00:27,493 INFO L933 BasicCegarLoop]: 3089 mSDtfsCounter, 7607 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 4113 mSolverCounterSat, 4106 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8041 SdHoareTripleChecker+Valid, 8027 SdHoareTripleChecker+Invalid, 8220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4106 IncrementalHoareTripleChecker+Valid, 4113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:27,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8041 Valid, 8027 Invalid, 8220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4106 Valid, 4113 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2021-12-18 04:00:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43807 states. [2021-12-18 04:00:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43807 to 38538. [2021-12-18 04:00:29,095 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) [2021-12-18 04:00:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38538 states to 38538 states and 55391 transitions. [2021-12-18 04:00:29,323 INFO L78 Accepts]: Start accepts. Automaton has 38538 states and 55391 transitions. Word has length 93 [2021-12-18 04:00:29,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:29,323 INFO L470 AbstractCegarLoop]: Abstraction has 38538 states and 55391 transitions. [2021-12-18 04:00:29,324 INFO L471 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) [2021-12-18 04:00:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 38538 states and 55391 transitions. [2021-12-18 04:00:29,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 04:00:29,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:29,327 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:00:29,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 04:00:29,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:29,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2146301045, now seen corresponding path program 1 times [2021-12-18 04:00:29,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:29,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107216777] [2021-12-18 04:00:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:29,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:00:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:00:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:00:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:00:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:29,668 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:00:29,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107216777] [2021-12-18 04:00:29,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107216777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:29,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:29,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:00:29,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744831192] [2021-12-18 04:00:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:29,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:00:29,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:00:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:00:29,672 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) [2021-12-18 04:00:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:37,996 INFO L93 Difference]: Finished difference Result 129915 states and 206472 transitions. [2021-12-18 04:00:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:00:37,997 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 [2021-12-18 04:00:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:38,848 INFO L225 Difference]: With dead ends: 129915 [2021-12-18 04:00:38,848 INFO L226 Difference]: Without dead ends: 91398 [2021-12-18 04:00:39,189 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:00:39,190 INFO L933 BasicCegarLoop]: 3296 mSDtfsCounter, 5912 mSDsluCounter, 4251 mSDsCounter, 0 mSdLazyCounter, 1896 mSolverCounterSat, 2844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 7547 SdHoareTripleChecker+Invalid, 4740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2844 IncrementalHoareTripleChecker+Valid, 1896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:39,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6223 Valid, 7547 Invalid, 4740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2844 Valid, 1896 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-18 04:00:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91398 states. [2021-12-18 04:00:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91398 to 83018. [2021-12-18 04:00:42,436 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) [2021-12-18 04:00:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83018 states to 83018 states and 125724 transitions. [2021-12-18 04:00:43,743 INFO L78 Accepts]: Start accepts. Automaton has 83018 states and 125724 transitions. Word has length 92 [2021-12-18 04:00:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:00:43,744 INFO L470 AbstractCegarLoop]: Abstraction has 83018 states and 125724 transitions. [2021-12-18 04:00:43,744 INFO L471 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) [2021-12-18 04:00:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 83018 states and 125724 transitions. [2021-12-18 04:00:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-18 04:00:43,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:00:43,746 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:00:43,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 04:00:43,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:00:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:00:43,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2112276362, now seen corresponding path program 1 times [2021-12-18 04:00:43,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:00:43,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339805995] [2021-12-18 04:00:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:00:43,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:00:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:00:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:00:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:00:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:00:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:00:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:00:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:00:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:00:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:00:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:00:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:00:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:00:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:00:44,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:00:44,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339805995] [2021-12-18 04:00:44,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339805995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:00:44,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:00:44,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:00:44,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511107304] [2021-12-18 04:00:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:00:44,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:00:44,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:00:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:00:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:00:44,019 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) [2021-12-18 04:00:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:00:56,867 INFO L93 Difference]: Finished difference Result 265587 states and 452903 transitions. [2021-12-18 04:00:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:00:56,868 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 [2021-12-18 04:00:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:00:58,532 INFO L225 Difference]: With dead ends: 265587 [2021-12-18 04:00:58,533 INFO L226 Difference]: Without dead ends: 182590 [2021-12-18 04:00:59,106 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:00:59,107 INFO L933 BasicCegarLoop]: 3476 mSDtfsCounter, 5662 mSDsluCounter, 4363 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 2731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5979 SdHoareTripleChecker+Valid, 7839 SdHoareTripleChecker+Invalid, 4664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2731 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:00:59,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5979 Valid, 7839 Invalid, 4664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2731 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-18 04:00:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182590 states. [2021-12-18 04:01:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182590 to 167915. [2021-12-18 04:01:06,099 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) [2021-12-18 04:01:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167915 states to 167915 states and 269400 transitions. [2021-12-18 04:01:08,148 INFO L78 Accepts]: Start accepts. Automaton has 167915 states and 269400 transitions. Word has length 93 [2021-12-18 04:01:08,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:08,149 INFO L470 AbstractCegarLoop]: Abstraction has 167915 states and 269400 transitions. [2021-12-18 04:01:08,149 INFO L471 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) [2021-12-18 04:01:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 167915 states and 269400 transitions. [2021-12-18 04:01:08,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 04:01:08,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:08,153 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:01:08,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 04:01:08,153 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:08,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1057506322, now seen corresponding path program 1 times [2021-12-18 04:01:08,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:08,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239030601] [2021-12-18 04:01:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:08,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:01:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:01:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:01:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:01:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:01:08,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:08,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239030601] [2021-12-18 04:01:08,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239030601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:08,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:08,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:01:08,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808823037] [2021-12-18 04:01:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:08,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:08,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:08,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:01:08,414 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) [2021-12-18 04:01:11,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:01:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:22,916 INFO L93 Difference]: Finished difference Result 182588 states and 299012 transitions. [2021-12-18 04:01:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:01:22,917 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 [2021-12-18 04:01:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:24,309 INFO L225 Difference]: With dead ends: 182588 [2021-12-18 04:01:24,309 INFO L226 Difference]: Without dead ends: 182585 [2021-12-18 04:01:24,427 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:01:24,428 INFO L933 BasicCegarLoop]: 3466 mSDtfsCounter, 4427 mSDsluCounter, 5794 mSDsCounter, 0 mSdLazyCounter, 2928 mSolverCounterSat, 1582 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 9260 SdHoareTripleChecker+Invalid, 4511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 2928 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:24,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4743 Valid, 9260 Invalid, 4511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1582 Valid, 2928 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-18 04:01:24,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182585 states. [2021-12-18 04:01:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182585 to 167916. [2021-12-18 04:01:30,719 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) [2021-12-18 04:01:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167916 states to 167916 states and 269401 transitions. [2021-12-18 04:01:32,755 INFO L78 Accepts]: Start accepts. Automaton has 167916 states and 269401 transitions. Word has length 94 [2021-12-18 04:01:32,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:32,756 INFO L470 AbstractCegarLoop]: Abstraction has 167916 states and 269401 transitions. [2021-12-18 04:01:32,756 INFO L471 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) [2021-12-18 04:01:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 167916 states and 269401 transitions. [2021-12-18 04:01:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-18 04:01:32,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:32,759 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:01:32,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 04:01:32,759 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:32,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1575598713, now seen corresponding path program 1 times [2021-12-18 04:01:32,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955490360] [2021-12-18 04:01:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:32,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:01:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:01:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:01:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 04:01:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-18 04:01:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-18 04:01:33,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:33,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955490360] [2021-12-18 04:01:33,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955490360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:33,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:33,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 04:01:33,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720260295] [2021-12-18 04:01:33,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:33,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:33,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:01:33,055 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)