./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.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 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:24:56,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:24:56,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:24:56,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:24:56,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:24:56,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:24:56,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:24:56,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:24:56,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:24:56,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:24:56,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:24:56,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:24:56,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:24:56,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:24:56,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:24:56,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:24:56,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:24:56,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:24:56,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:24:56,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:24:56,651 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:24:56,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:24:56,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:24:56,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:24:56,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:24:56,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:24:56,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:24:56,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:24:56,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:24:56,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:24:56,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:24:56,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:24:56,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:24:56,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:24:56,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:24:56,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:24:56,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:24:56,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:24:56,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:24:56,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:24:56,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:24:56,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:24:56,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:24:56,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:24:56,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:24:56,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:24:56,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:24:56,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:24:56,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:24:56,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:24:56,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:24:56,694 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:24:56,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:24:56,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:24:56,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:24:56,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:24:56,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:24:56,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:24:56,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:24:56,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:24:56,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:24:56,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:24:56,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:24:56,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:24:56,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:24:56,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:24:56,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:24:56,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:24:56,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:24:56,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:24:56,699 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:24:56,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:24:56,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:24:56,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2022-07-14 00:24:56,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:24:56,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:24:56,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:24:56,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:24:56,929 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:24:56,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2022-07-14 00:24:56,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4dad14c/e105e0e820404b5ea259f4db99b2d2c6/FLAGdc1ba41de [2022-07-14 00:24:57,609 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:24:57,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2022-07-14 00:24:57,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4dad14c/e105e0e820404b5ea259f4db99b2d2c6/FLAGdc1ba41de [2022-07-14 00:24:58,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e4dad14c/e105e0e820404b5ea259f4db99b2d2c6 [2022-07-14 00:24:58,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:24:58,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:24:58,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:24:58,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:24:58,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:24:58,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:24:58" (1/1) ... [2022-07-14 00:24:58,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d21902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:24:58, skipping insertion in model container [2022-07-14 00:24:58,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:24:58" (1/1) ... [2022-07-14 00:24:58,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:24:58,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:24:58,503 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2022-07-14 00:24:58,504 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2022-07-14 00:24:58,952 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2022-07-14 00:24:59,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:24:59,940 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:25:00,055 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2022-07-14 00:25:00,057 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2022-07-14 00:25:00,071 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-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2022-07-14 00:25:00,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:25:00,419 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:25:00,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00 WrapperNode [2022-07-14 00:25:00,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:25:00,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:25:00,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:25:00,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:25:00,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,646 INFO L137 Inliner]: procedures = 286, calls = 2898, calls flagged for inlining = 145, calls inlined = 128, statements flattened = 5519 [2022-07-14 00:25:00,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:25:00,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:25:00,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:25:00,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:25:00,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:25:00,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:25:00,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:25:00,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:25:00,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (1/1) ... [2022-07-14 00:25:00,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:25:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:25:00,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 00:25:00,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 00:25:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-14 00:25:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-14 00:25:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:25:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-14 00:25:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-14 00:25:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:25:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:25:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:25:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-14 00:25:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-14 00:25:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2022-07-14 00:25:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2022-07-14 00:25:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-14 00:25:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-14 00:25:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2022-07-14 00:25:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2022-07-14 00:25:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:25:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:25:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-14 00:25:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_stop [2022-07-14 00:25:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_stop [2022-07-14 00:25:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:25:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:25:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2022-07-14 00:25:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2022-07-14 00:25:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 00:25:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 00:25:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:25:00,980 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:25:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-14 00:25:00,980 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-14 00:25:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-14 00:25:00,980 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-14 00:25:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_find [2022-07-14 00:25:00,980 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_find [2022-07-14 00:25:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:25:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:25:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2022-07-14 00:25:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2022-07-14 00:25:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-14 00:25:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-14 00:25:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure atm_may_send [2022-07-14 00:25:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_may_send [2022-07-14 00:25:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_open [2022-07-14 00:25:00,981 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_open [2022-07-14 00:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-14 00:25:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-14 00:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-14 00:25:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-14 00:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 00:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tx_timeout [2022-07-14 00:25:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tx_timeout [2022-07-14 00:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_empty [2022-07-14 00:25:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_empty [2022-07-14 00:25:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2022-07-14 00:25:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2022-07-14 00:25:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:25:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-14 00:25:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-14 00:25:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2022-07-14 00:25:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2022-07-14 00:25:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-14 00:25:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 00:25:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 00:25:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:25:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-07-14 00:25:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-07-14 00:25:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:25:00,984 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-14 00:25:00,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-14 00:25:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 00:25:00,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 00:25:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-14 00:25:00,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-14 00:25:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tbl_walk [2022-07-14 00:25:00,985 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tbl_walk [2022-07-14 00:25:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-14 00:25:00,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-14 00:25:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-14 00:25:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-14 00:25:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:25:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:25:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:25:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure atm_force_charge [2022-07-14 00:25:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_force_charge [2022-07-14 00:25:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-14 00:25:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-14 00:25:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2022-07-14 00:25:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2022-07-14 00:25:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure atm_return [2022-07-14 00:25:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_return [2022-07-14 00:25:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 00:25:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 00:25:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:25:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-07-14 00:25:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-07-14 00:25:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure lec_get_idx [2022-07-14 00:25:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_get_idx [2022-07-14 00:25:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:25:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_add [2022-07-14 00:25:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_add [2022-07-14 00:25:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-14 00:25:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-14 00:25:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_add_head [2022-07-14 00:25:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_add_head [2022-07-14 00:25:00,988 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-14 00:25:00,988 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-14 00:25:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:25:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:25:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure lec_change_mtu [2022-07-14 00:25:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_change_mtu [2022-07-14 00:25:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2022-07-14 00:25:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2022-07-14 00:25:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-14 00:25:00,989 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-14 00:25:00,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-14 00:25:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-14 00:25:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-14 00:25:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-14 00:25:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:25:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:25:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_show [2022-07-14 00:25:00,990 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_show [2022-07-14 00:25:00,990 INFO L130 BoogieDeclarations]: Found specification of procedure vcc_release_async [2022-07-14 00:25:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure vcc_release_async [2022-07-14 00:25:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:25:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_del [2022-07-14 00:25:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_del [2022-07-14 00:25:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release_private [2022-07-14 00:25:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release_private [2022-07-14 00:25:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:25:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:25:00,991 INFO L130 BoogieDeclarations]: Found specification of procedure lec_set_multicast_list [2022-07-14 00:25:00,991 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_set_multicast_list [2022-07-14 00:25:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_put [2022-07-14 00:25:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_put [2022-07-14 00:25:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_hold [2022-07-14 00:25:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_hold [2022-07-14 00:25:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:25:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-14 00:25:00,992 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-14 00:25:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:25:00,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:25:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-14 00:25:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-07-14 00:25:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-07-14 00:25:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 00:25:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 00:25:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2022-07-14 00:25:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2022-07-14 00:25:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-14 00:25:00,993 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-14 00:25:00,993 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2022-07-14 00:25:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2022-07-14 00:25:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_close [2022-07-14 00:25:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_close [2022-07-14 00:25:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-14 00:25:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-14 00:25:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-07-14 00:25:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-07-14 00:25:00,994 INFO L130 BoogieDeclarations]: Found specification of procedure make_entry [2022-07-14 00:25:00,994 INFO L138 BoogieDeclarations]: Found implementation of procedure make_entry [2022-07-14 00:25:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-14 00:25:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-14 00:25:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_remove [2022-07-14 00:25:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_remove [2022-07-14 00:25:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:25:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2022-07-14 00:25:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2022-07-14 00:25:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_clear_vccs [2022-07-14 00:25:00,995 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_clear_vccs [2022-07-14 00:25:00,995 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2022-07-14 00:25:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2022-07-14 00:25:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:25:00,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:25:01,571 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:25:01,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:25:01,775 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:25:07,969 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-14 00:25:09,697 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !(0 != (lec_addr_delete_~____ptr___0~4#1.base + lec_addr_delete_~____ptr___0~4#1.offset) % 18446744073709551616);lec_addr_delete_~tmp___2~14#1.base, lec_addr_delete_~tmp___2~14#1.offset := 0, 0;lec_addr_delete_~entry~10#1.base, lec_addr_delete_~entry~10#1.offset := lec_addr_delete_~tmp___2~14#1.base, lec_addr_delete_~tmp___2~14#1.offset; [2022-07-14 00:25:09,697 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume 0 != (lec_addr_delete_~____ptr___0~4#1.base + lec_addr_delete_~____ptr___0~4#1.offset) % 18446744073709551616;lec_addr_delete_~__mptr___0~5#1.base, lec_addr_delete_~__mptr___0~5#1.offset := lec_addr_delete_~____ptr___0~4#1.base, lec_addr_delete_~____ptr___0~4#1.offset;lec_addr_delete_~tmp___2~14#1.base, lec_addr_delete_~tmp___2~14#1.offset := lec_addr_delete_~__mptr___0~5#1.base, lec_addr_delete_~__mptr___0~5#1.offset; [2022-07-14 00:25:14,864 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:25:14,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:25:14,886 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 00:25:14,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:25:14 BoogieIcfgContainer [2022-07-14 00:25:14,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:25:14,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:25:14,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:25:14,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:25:14,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:24:58" (1/3) ... [2022-07-14 00:25:14,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208e6aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:25:14, skipping insertion in model container [2022-07-14 00:25:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:25:00" (2/3) ... [2022-07-14 00:25:14,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208e6aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:25:14, skipping insertion in model container [2022-07-14 00:25:14,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:25:14" (3/3) ... [2022-07-14 00:25:14,896 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2022-07-14 00:25:14,906 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:25:14,906 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:25:14,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:25:14,988 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ea7645d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@445888b9 [2022-07-14 00:25:14,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:25:14,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 1671 states, 1231 states have (on average 1.3907392363931763) internal successors, (1712), 1271 states have internal predecessors, (1712), 361 states have call successors, (361), 78 states have call predecessors, (361), 77 states have return successors, (352), 342 states have call predecessors, (352), 352 states have call successors, (352) [2022-07-14 00:25:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-14 00:25:15,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:25:15,020 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:25:15,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:25:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:25:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash -692835284, now seen corresponding path program 1 times [2022-07-14 00:25:15,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:25:15,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926912053] [2022-07-14 00:25:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:25:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:25:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:25:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:25:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:25:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:25:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:25:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:25:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:25:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:25:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:25:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:25:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 00:25:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:25:15,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:25:15,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926912053] [2022-07-14 00:25:15,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926912053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:25:15,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:25:15,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:25:15,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273295112] [2022-07-14 00:25:15,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:25:15,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:25:15,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:25:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:25:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:25:15,751 INFO L87 Difference]: Start difference. First operand has 1671 states, 1231 states have (on average 1.3907392363931763) internal successors, (1712), 1271 states have internal predecessors, (1712), 361 states have call successors, (361), 78 states have call predecessors, (361), 77 states have return successors, (352), 342 states have call predecessors, (352), 352 states have call successors, (352) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:25:18,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:25:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:25:27,797 INFO L93 Difference]: Finished difference Result 5002 states and 7502 transitions. [2022-07-14 00:25:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:25:27,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 3 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 86 [2022-07-14 00:25:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:25:27,841 INFO L225 Difference]: With dead ends: 5002 [2022-07-14 00:25:27,841 INFO L226 Difference]: Without dead ends: 3281 [2022-07-14 00:25:27,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:25:27,855 INFO L413 NwaCegarLoop]: 2684 mSDtfsCounter, 2741 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 803 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:25:27,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 5686 Invalid, 2376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [803 Valid, 1572 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-07-14 00:25:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-07-14 00:25:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3170. [2022-07-14 00:25:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 2350 states have (on average 1.387659574468085) internal successors, (3261), 2408 states have internal predecessors, (3261), 669 states have call successors, (669), 151 states have call predecessors, (669), 150 states have return successors, (668), 648 states have call predecessors, (668), 668 states have call successors, (668) [2022-07-14 00:25:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4598 transitions. [2022-07-14 00:25:28,033 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4598 transitions. Word has length 86 [2022-07-14 00:25:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:25:28,034 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 4598 transitions. [2022-07-14 00:25:28,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:25:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4598 transitions. [2022-07-14 00:25:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-14 00:25:28,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:25:28,041 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:25:28,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:25:28,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:25:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:25:28,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2110448072, now seen corresponding path program 1 times [2022-07-14 00:25:28,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:25:28,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086364334] [2022-07-14 00:25:28,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:25:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:25:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:25:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:25:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:25:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:25:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:25:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:25:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:25:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:25:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:25:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:25:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:25:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:25:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:25:28,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086364334] [2022-07-14 00:25:28,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086364334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:25:28,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:25:28,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:25:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613158773] [2022-07-14 00:25:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:25:28,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:25:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:25:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:25:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:25:28,619 INFO L87 Difference]: Start difference. First operand 3170 states and 4598 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:25:31,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:25:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:25:56,179 INFO L93 Difference]: Finished difference Result 16106 states and 24451 transitions. [2022-07-14 00:25:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:25:56,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-07-14 00:25:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:25:56,307 INFO L225 Difference]: With dead ends: 16106 [2022-07-14 00:25:56,307 INFO L226 Difference]: Without dead ends: 12960 [2022-07-14 00:25:56,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:25:56,324 INFO L413 NwaCegarLoop]: 3544 mSDtfsCounter, 10300 mSDsluCounter, 5967 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 3190 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10990 SdHoareTripleChecker+Valid, 9511 SdHoareTripleChecker+Invalid, 7584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3190 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:25:56,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10990 Valid, 9511 Invalid, 7584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3190 Valid, 4393 Invalid, 1 Unknown, 0 Unchecked, 26.4s Time] [2022-07-14 00:25:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2022-07-14 00:25:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 12554. [2022-07-14 00:25:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 9307 states have (on average 1.3870205221876006) internal successors, (12909), 9541 states have internal predecessors, (12909), 2637 states have call successors, (2637), 598 states have call predecessors, (2637), 609 states have return successors, (3090), 2566 states have call predecessors, (3090), 2636 states have call successors, (3090) [2022-07-14 00:25:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 18636 transitions. [2022-07-14 00:25:56,722 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 18636 transitions. Word has length 97 [2022-07-14 00:25:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:25:56,724 INFO L495 AbstractCegarLoop]: Abstraction has 12554 states and 18636 transitions. [2022-07-14 00:25:56,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:25:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 18636 transitions. [2022-07-14 00:25:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-14 00:25:56,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:25:56,728 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:25:56,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:25:56,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:25:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:25:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 409515402, now seen corresponding path program 1 times [2022-07-14 00:25:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:25:56,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794054144] [2022-07-14 00:25:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:25:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:25:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:25:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:25:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:25:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:25:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:25:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:25:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:25:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:25:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:25:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:25:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-14 00:25:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:25:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:25:57,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:25:57,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794054144] [2022-07-14 00:25:57,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794054144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:25:57,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:25:57,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:25:57,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735956312] [2022-07-14 00:25:57,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:25:57,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:25:57,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:25:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:25:57,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:25:57,141 INFO L87 Difference]: Start difference. First operand 12554 states and 18636 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:25:59,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:26:29,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:26:29,934 INFO L93 Difference]: Finished difference Result 64140 states and 102067 transitions. [2022-07-14 00:26:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:26:29,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-07-14 00:26:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:26:30,255 INFO L225 Difference]: With dead ends: 64140 [2022-07-14 00:26:30,255 INFO L226 Difference]: Without dead ends: 51610 [2022-07-14 00:26:30,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:26:30,358 INFO L413 NwaCegarLoop]: 3421 mSDtfsCounter, 7289 mSDsluCounter, 8608 mSDsCounter, 0 mSdLazyCounter, 6000 mSolverCounterSat, 1690 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7983 SdHoareTripleChecker+Valid, 12029 SdHoareTripleChecker+Invalid, 7691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1690 IncrementalHoareTripleChecker+Valid, 6000 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:26:30,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7983 Valid, 12029 Invalid, 7691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1690 Valid, 6000 Invalid, 1 Unknown, 0 Unchecked, 31.0s Time] [2022-07-14 00:26:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51610 states. [2022-07-14 00:26:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51610 to 50082. [2022-07-14 00:26:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50082 states, 37141 states have (on average 1.3857731348105866) internal successors, (51469), 38061 states have internal predecessors, (51469), 10491 states have call successors, (10491), 2386 states have call predecessors, (10491), 2449 states have return successors, (15530), 10242 states have call predecessors, (15530), 10490 states have call successors, (15530) [2022-07-14 00:26:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50082 states to 50082 states and 77490 transitions. [2022-07-14 00:26:32,639 INFO L78 Accepts]: Start accepts. Automaton has 50082 states and 77490 transitions. Word has length 98 [2022-07-14 00:26:32,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:26:32,656 INFO L495 AbstractCegarLoop]: Abstraction has 50082 states and 77490 transitions. [2022-07-14 00:26:32,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:26:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 50082 states and 77490 transitions. [2022-07-14 00:26:32,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-14 00:26:32,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:26:32,665 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:26:32,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:26:32,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:26:32,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:26:32,666 INFO L85 PathProgramCache]: Analyzing trace with hash 7251858, now seen corresponding path program 1 times [2022-07-14 00:26:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:26:32,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075740359] [2022-07-14 00:26:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:26:32,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:26:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:26:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:26:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:26:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:26:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:26:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:26:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:26:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:26:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:26:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:26:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:26:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:26:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:26:33,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:26:33,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075740359] [2022-07-14 00:26:33,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075740359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:26:33,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:26:33,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:26:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216120501] [2022-07-14 00:26:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:26:33,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:26:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:26:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:26:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:26:33,234 INFO L87 Difference]: Start difference. First operand 50082 states and 77490 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:26:35,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:27:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:27:05,785 INFO L93 Difference]: Finished difference Result 255924 states and 449303 transitions. [2022-07-14 00:27:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:27:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-07-14 00:27:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:27:07,382 INFO L225 Difference]: With dead ends: 255924 [2022-07-14 00:27:07,382 INFO L226 Difference]: Without dead ends: 205866 [2022-07-14 00:27:07,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:27:07,925 INFO L413 NwaCegarLoop]: 3523 mSDtfsCounter, 8595 mSDsluCounter, 7612 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 1927 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9293 SdHoareTripleChecker+Valid, 11135 SdHoareTripleChecker+Invalid, 6882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:27:07,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9293 Valid, 11135 Invalid, 6882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1927 Valid, 4954 Invalid, 1 Unknown, 0 Unchecked, 27.2s Time] [2022-07-14 00:27:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205866 states. [2022-07-14 00:27:14,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205866 to 199774. [2022-07-14 00:27:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199774 states, 148269 states have (on average 1.3843554620318475) internal successors, (205257), 151745 states have internal predecessors, (205257), 41771 states have call successors, (41771), 9506 states have call predecessors, (41771), 9733 states have return successors, (89356), 40786 states have call predecessors, (89356), 41770 states have call successors, (89356) [2022-07-14 00:27:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199774 states to 199774 states and 336384 transitions. [2022-07-14 00:27:16,718 INFO L78 Accepts]: Start accepts. Automaton has 199774 states and 336384 transitions. Word has length 96 [2022-07-14 00:27:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:27:16,718 INFO L495 AbstractCegarLoop]: Abstraction has 199774 states and 336384 transitions. [2022-07-14 00:27:16,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:27:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 199774 states and 336384 transitions. [2022-07-14 00:27:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-14 00:27:16,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:27:16,721 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:27:16,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:27:16,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:27:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:27:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1039671616, now seen corresponding path program 1 times [2022-07-14 00:27:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:27:16,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661150367] [2022-07-14 00:27:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:27:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:27:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:27:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:27:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 00:27:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:27:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-14 00:27:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:27:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:27:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:27:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-14 00:27:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-14 00:27:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-14 00:27:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:27:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-14 00:27:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:27:17,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661150367] [2022-07-14 00:27:17,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661150367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:27:17,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:27:17,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:27:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221208495] [2022-07-14 00:27:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:27:17,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:27:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:27:17,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:27:17,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:27:17,062 INFO L87 Difference]: Start difference. First operand 199774 states and 336384 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-14 00:27:19,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:28:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:28:13,380 INFO L93 Difference]: Finished difference Result 1020410 states and 2155779 transitions. [2022-07-14 00:28:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:28:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-07-14 00:28:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.