./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-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-tmp.no-commuhash-c3fed41 [2021-12-18 04:34:13,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 04:34:13,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 04:34:13,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 04:34:13,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 04:34:13,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 04:34:13,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 04:34:13,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 04:34:13,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 04:34:13,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 04:34:13,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 04:34:13,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 04:34:13,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 04:34:13,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 04:34:13,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 04:34:13,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 04:34:13,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 04:34:13,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 04:34:13,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 04:34:13,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 04:34:13,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 04:34:13,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 04:34:13,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 04:34:13,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 04:34:13,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 04:34:13,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 04:34:13,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 04:34:13,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 04:34:13,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 04:34:13,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 04:34:13,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 04:34:13,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 04:34:13,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 04:34:13,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 04:34:13,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 04:34:13,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 04:34:13,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 04:34:13,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 04:34:13,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 04:34:13,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 04:34:13,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 04:34:13,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 04:34:13,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 04:34:13,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 04:34:13,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 04:34:13,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 04:34:13,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 04:34:13,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 04:34:13,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 04:34:13,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 04:34:13,867 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 04:34:13,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 04:34:13,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 04:34:13,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 04:34:13,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 04:34:13,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 04:34:13,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 04:34:13,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 04:34:13,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 04:34:13,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 04:34:13,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 04:34:13,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 04:34:13,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 04:34:13,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:34:13,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 04:34:13,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 04:34:13,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 04:34:13,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 04:34:13,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 04:34:13,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 04:34:13,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 04:34:13,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 04:34:13,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 04:34:13,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-12-18 04:34:14,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 04:34:14,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 04:34:14,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 04:34:14,126 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 04:34:14,126 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 04:34:14,127 INFO L432 ainManager$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 [2021-12-18 04:34:14,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6716fcd7/88528a0e605b42e18880a112af174fbf/FLAG2fb4800ed [2021-12-18 04:34:14,867 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 04:34:14,868 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 [2021-12-18 04:34:14,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6716fcd7/88528a0e605b42e18880a112af174fbf/FLAG2fb4800ed [2021-12-18 04:34:14,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6716fcd7/88528a0e605b42e18880a112af174fbf [2021-12-18 04:34:14,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 04:34:14,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 04:34:14,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 04:34:14,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 04:34:14,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 04:34:14,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:34:14" (1/1) ... [2021-12-18 04:34:14,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5e5895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:14, skipping insertion in model container [2021-12-18 04:34:14,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:34:14" (1/1) ... [2021-12-18 04:34:14,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 04:34:15,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 04:34:15,573 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-12-18 04:34:15,574 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-12-18 04:34:16,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-12-18 04:34:17,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:34:17,583 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 04:34:17,660 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-12-18 04:34:17,662 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-12-18 04:34:17,676 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] [2021-12-18 04:34:17,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:34:18,082 INFO L208 MainTranslator]: Completed translation [2021-12-18 04:34:18,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18 WrapperNode [2021-12-18 04:34:18,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 04:34:18,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 04:34:18,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 04:34:18,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 04:34:18,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,346 INFO L137 Inliner]: procedures = 286, calls = 2896, calls flagged for inlining = 145, calls inlined = 128, statements flattened = 5519 [2021-12-18 04:34:18,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 04:34:18,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 04:34:18,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 04:34:18,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 04:34:18,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 04:34:18,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 04:34:18,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 04:34:18,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 04:34:18,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (1/1) ... [2021-12-18 04:34:18,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:34:18,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:34:18,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 04:34:18,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 04:34:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-12-18 04:34:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-12-18 04:34:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 04:34:18,722 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-12-18 04:34:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-12-18 04:34:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 04:34:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 04:34:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 04:34:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 04:34:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 04:34:18,723 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2021-12-18 04:34:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2021-12-18 04:34:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 04:34:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 04:34:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2021-12-18 04:34:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2021-12-18 04:34:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 04:34:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 04:34:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-12-18 04:34:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_stop [2021-12-18 04:34:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_stop [2021-12-18 04:34:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 04:34:18,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 04:34:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-12-18 04:34:18,726 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-12-18 04:34:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 04:34:18,726 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 04:34:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 04:34:18,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 04:34:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 04:34:18,726 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 04:34:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-18 04:34:18,727 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-18 04:34:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_find [2021-12-18 04:34:18,727 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_find [2021-12-18 04:34:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 04:34:18,727 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 04:34:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2021-12-18 04:34:18,728 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2021-12-18 04:34:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-18 04:34:18,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-18 04:34:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure atm_may_send [2021-12-18 04:34:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_may_send [2021-12-18 04:34:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_open [2021-12-18 04:34:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_open [2021-12-18 04:34:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-18 04:34:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-18 04:34:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-18 04:34:18,730 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-18 04:34:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 04:34:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-18 04:34:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tx_timeout [2021-12-18 04:34:18,730 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tx_timeout [2021-12-18 04:34:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_empty [2021-12-18 04:34:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_empty [2021-12-18 04:34:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2021-12-18 04:34:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2021-12-18 04:34:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 04:34:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-18 04:34:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-18 04:34:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2021-12-18 04:34:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2021-12-18 04:34:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-18 04:34:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 04:34:18,733 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 04:34:18,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 04:34:18,734 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2021-12-18 04:34:18,734 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2021-12-18 04:34:18,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 04:34:18,734 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-18 04:34:18,735 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-18 04:34:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 04:34:18,735 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 04:34:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 04:34:18,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 04:34:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tbl_walk [2021-12-18 04:34:18,735 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tbl_walk [2021-12-18 04:34:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 04:34:18,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 04:34:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 04:34:18,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 04:34:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 04:34:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 04:34:18,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 04:34:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure atm_force_charge [2021-12-18 04:34:18,737 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_force_charge [2021-12-18 04:34:18,737 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 04:34:18,737 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 04:34:18,737 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2021-12-18 04:34:18,738 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2021-12-18 04:34:18,738 INFO L130 BoogieDeclarations]: Found specification of procedure atm_return [2021-12-18 04:34:18,738 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_return [2021-12-18 04:34:18,738 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 04:34:18,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 04:34:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 04:34:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-12-18 04:34:18,739 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-12-18 04:34:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure lec_get_idx [2021-12-18 04:34:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_get_idx [2021-12-18 04:34:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 04:34:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_add [2021-12-18 04:34:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_add [2021-12-18 04:34:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 04:34:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 04:34:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_add_head [2021-12-18 04:34:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_add_head [2021-12-18 04:34:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 04:34:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 04:34:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 04:34:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 04:34:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure lec_change_mtu [2021-12-18 04:34:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_change_mtu [2021-12-18 04:34:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2021-12-18 04:34:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2021-12-18 04:34:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 04:34:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 04:34:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 04:34:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 04:34:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-18 04:34:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-18 04:34:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 04:34:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 04:34:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_show [2021-12-18 04:34:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_show [2021-12-18 04:34:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure vcc_release_async [2021-12-18 04:34:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure vcc_release_async [2021-12-18 04:34:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 04:34:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_del [2021-12-18 04:34:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_del [2021-12-18 04:34:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release_private [2021-12-18 04:34:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release_private [2021-12-18 04:34:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 04:34:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 04:34:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure lec_set_multicast_list [2021-12-18 04:34:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_set_multicast_list [2021-12-18 04:34:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_put [2021-12-18 04:34:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_put [2021-12-18 04:34:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_hold [2021-12-18 04:34:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_hold [2021-12-18 04:34:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 04:34:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-18 04:34:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-18 04:34:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 04:34:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 04:34:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 04:34:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-12-18 04:34:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-12-18 04:34:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 04:34:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 04:34:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2021-12-18 04:34:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2021-12-18 04:34:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-18 04:34:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-18 04:34:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2021-12-18 04:34:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2021-12-18 04:34:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_close [2021-12-18 04:34:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_close [2021-12-18 04:34:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:34:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 04:34:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-18 04:34:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-18 04:34:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure make_entry [2021-12-18 04:34:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure make_entry [2021-12-18 04:34:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 04:34:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 04:34:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_remove [2021-12-18 04:34:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_remove [2021-12-18 04:34:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 04:34:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2021-12-18 04:34:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2021-12-18 04:34:18,758 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_clear_vccs [2021-12-18 04:34:18,759 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_clear_vccs [2021-12-18 04:34:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-12-18 04:34:18,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-12-18 04:34:18,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 04:34:18,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 04:34:19,421 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 04:34:19,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 04:34:19,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 04:34:26,314 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 04:34:28,021 INFO L768 $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; [2021-12-18 04:34:28,021 INFO L768 $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; [2021-12-18 04:34:33,724 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 04:34:33,760 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 04:34:33,760 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 04:34:33,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:34:33 BoogieIcfgContainer [2021-12-18 04:34:33,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 04:34:33,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 04:34:33,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 04:34:33,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 04:34:33,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:34:14" (1/3) ... [2021-12-18 04:34:33,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47759d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:34:33, skipping insertion in model container [2021-12-18 04:34:33,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:34:18" (2/3) ... [2021-12-18 04:34:33,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47759d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:34:33, skipping insertion in model container [2021-12-18 04:34:33,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:34:33" (3/3) ... [2021-12-18 04:34:33,773 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 [2021-12-18 04:34:33,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 04:34:33,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 04:34:33,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 04:34:33,852 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 04:34:33,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 04:34:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 1666 states, 1226 states have (on average 1.3890701468189233) internal successors, (1703), 1266 states have internal predecessors, (1703), 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) [2021-12-18 04:34:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-18 04:34:33,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:33,915 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:34:33,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1135839636, now seen corresponding path program 1 times [2021-12-18 04:34:33,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:33,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037000035] [2021-12-18 04:34:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:33,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:34:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:34:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:34:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:34:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:34:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:34:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:34:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 04:34:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 04:34:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-18 04:34:34,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:34,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037000035] [2021-12-18 04:34:34,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037000035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:34,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:34,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 04:34:34,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387188] [2021-12-18 04:34:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:34,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 04:34:34,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 04:34:34,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 04:34:34,671 INFO L87 Difference]: Start difference. First operand has 1666 states, 1226 states have (on average 1.3890701468189233) internal successors, (1703), 1266 states have internal predecessors, (1703), 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) [2021-12-18 04:34:37,121 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 [] [2021-12-18 04:34:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:34:47,048 INFO L93 Difference]: Finished difference Result 4987 states and 7475 transitions. [2021-12-18 04:34:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:34:47,051 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 [2021-12-18 04:34:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:34:47,090 INFO L225 Difference]: With dead ends: 4987 [2021-12-18 04:34:47,090 INFO L226 Difference]: Without dead ends: 3271 [2021-12-18 04:34:47,103 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:34:47,105 INFO L933 BasicCegarLoop]: 2670 mSDtfsCounter, 2717 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 805 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 5918 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2021-12-18 04:34:47,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2974 Valid, 5918 Invalid, 2113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [805 Valid, 1307 Invalid, 1 Unknown, 0 Unchecked, 11.8s Time] [2021-12-18 04:34:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2021-12-18 04:34:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3160. [2021-12-18 04:34:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 2340 states have (on average 1.3858974358974359) internal successors, (3243), 2398 states have internal predecessors, (3243), 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) [2021-12-18 04:34:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4580 transitions. [2021-12-18 04:34:47,316 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4580 transitions. Word has length 86 [2021-12-18 04:34:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:34:47,317 INFO L470 AbstractCegarLoop]: Abstraction has 3160 states and 4580 transitions. [2021-12-18 04:34:47,317 INFO L471 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) [2021-12-18 04:34:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4580 transitions. [2021-12-18 04:34:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-18 04:34:47,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:34:47,329 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:34:47,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 04:34:47,331 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:34:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:34:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1699374466, now seen corresponding path program 1 times [2021-12-18 04:34:47,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:34:47,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792156678] [2021-12-18 04:34:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:34:47,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:34:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:34:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:34:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:34:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:34:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:34:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:34:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:34:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:34:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:34:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 04:34:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 04:34:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:34:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-18 04:34:47,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:34:47,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792156678] [2021-12-18 04:34:47,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792156678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:34:47,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:34:47,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:34:47,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155223940] [2021-12-18 04:34:47,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:34:47,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:34:47,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:34:47,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:34:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:34:47,841 INFO L87 Difference]: Start difference. First operand 3160 states and 4580 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) [2021-12-18 04:34:50,434 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 [] [2021-12-18 04:35:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:35:14,352 INFO L93 Difference]: Finished difference Result 16064 states and 24377 transitions. [2021-12-18 04:35:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:35:14,360 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 [2021-12-18 04:35:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:35:14,442 INFO L225 Difference]: With dead ends: 16064 [2021-12-18 04:35:14,442 INFO L226 Difference]: Without dead ends: 12928 [2021-12-18 04:35:14,468 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:35:14,470 INFO L933 BasicCegarLoop]: 3534 mSDtfsCounter, 10244 mSDsluCounter, 6199 mSDsCounter, 0 mSdLazyCounter, 4114 mSolverCounterSat, 3203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10937 SdHoareTripleChecker+Valid, 9733 SdHoareTripleChecker+Invalid, 7318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3203 IncrementalHoareTripleChecker+Valid, 4114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:35:14,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10937 Valid, 9733 Invalid, 7318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3203 Valid, 4114 Invalid, 1 Unknown, 0 Unchecked, 25.5s Time] [2021-12-18 04:35:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12928 states. [2021-12-18 04:35:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12928 to 12522. [2021-12-18 04:35:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12522 states, 9275 states have (on average 1.3857681940700808) internal successors, (12853), 9509 states have internal predecessors, (12853), 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) [2021-12-18 04:35:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12522 states to 12522 states and 18580 transitions. [2021-12-18 04:35:14,980 INFO L78 Accepts]: Start accepts. Automaton has 12522 states and 18580 transitions. Word has length 99 [2021-12-18 04:35:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:35:14,985 INFO L470 AbstractCegarLoop]: Abstraction has 12522 states and 18580 transitions. [2021-12-18 04:35:14,985 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-18 04:35:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 12522 states and 18580 transitions. [2021-12-18 04:35:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-18 04:35:14,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:35:14,990 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:35:14,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:35:14,991 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:35:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:35:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1667649466, now seen corresponding path program 1 times [2021-12-18 04:35:14,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:35:14,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516634306] [2021-12-18 04:35:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:14,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:35:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:35:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:35:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:35:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:35:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:35:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:35:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:35:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:35:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:35:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 04:35:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 04:35:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-18 04:35:15,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:35:15,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516634306] [2021-12-18 04:35:15,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516634306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:35:15,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:35:15,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:35:15,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552788956] [2021-12-18 04:35:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:35:15,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:35:15,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:35:15,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:35:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:35:15,517 INFO L87 Difference]: Start difference. First operand 12522 states and 18580 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) [2021-12-18 04:35:18,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 04:35:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:35:48,195 INFO L93 Difference]: Finished difference Result 63960 states and 101911 transitions. [2021-12-18 04:35:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:35:48,196 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 [2021-12-18 04:35:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:35:48,511 INFO L225 Difference]: With dead ends: 63960 [2021-12-18 04:35:48,511 INFO L226 Difference]: Without dead ends: 51462 [2021-12-18 04:35:48,621 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:35:48,622 INFO L933 BasicCegarLoop]: 3492 mSDtfsCounter, 7019 mSDsluCounter, 11174 mSDsCounter, 0 mSdLazyCounter, 5812 mSolverCounterSat, 1152 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7712 SdHoareTripleChecker+Valid, 14666 SdHoareTripleChecker+Invalid, 6965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 5812 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:35:48,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7712 Valid, 14666 Invalid, 6965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1152 Valid, 5812 Invalid, 1 Unknown, 0 Unchecked, 31.0s Time] [2021-12-18 04:35:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51462 states. [2021-12-18 04:35:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51462 to 49930. [2021-12-18 04:35:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49930 states, 36989 states have (on average 1.3841141961123578) internal successors, (51197), 37909 states have internal predecessors, (51197), 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) [2021-12-18 04:35:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49930 states to 49930 states and 77218 transitions. [2021-12-18 04:35:51,118 INFO L78 Accepts]: Start accepts. Automaton has 49930 states and 77218 transitions. Word has length 97 [2021-12-18 04:35:51,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:35:51,120 INFO L470 AbstractCegarLoop]: Abstraction has 49930 states and 77218 transitions. [2021-12-18 04:35:51,121 INFO L471 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) [2021-12-18 04:35:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 49930 states and 77218 transitions. [2021-12-18 04:35:51,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-18 04:35:51,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:35:51,128 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:35:51,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 04:35:51,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:35:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:35:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash 421984606, now seen corresponding path program 1 times [2021-12-18 04:35:51,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:35:51,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756141045] [2021-12-18 04:35:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:35:51,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:35:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:35:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:35:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:35:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:35:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:35:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:35:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:35:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:35:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:35:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 04:35:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 04:35:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:35:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-18 04:35:51,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:35:51,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756141045] [2021-12-18 04:35:51,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756141045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:35:51,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:35:51,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:35:51,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130279390] [2021-12-18 04:35:51,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:35:51,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:35:51,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:35:51,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:35:51,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:35:51,948 INFO L87 Difference]: Start difference. First operand 49930 states and 77218 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) [2021-12-18 04:35:54,705 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 [] [2021-12-18 04:36:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:36:29,568 INFO L93 Difference]: Finished difference Result 255396 states and 447851 transitions. [2021-12-18 04:36:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:36:29,572 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 [2021-12-18 04:36:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:36:31,693 INFO L225 Difference]: With dead ends: 255396 [2021-12-18 04:36:31,693 INFO L226 Difference]: Without dead ends: 205490 [2021-12-18 04:36:32,418 INFO L932 BasicCegarLoop]: 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 [2021-12-18 04:36:32,421 INFO L933 BasicCegarLoop]: 3411 mSDtfsCounter, 7023 mSDsluCounter, 11147 mSDsCounter, 0 mSdLazyCounter, 5809 mSolverCounterSat, 1166 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7718 SdHoareTripleChecker+Valid, 14558 SdHoareTripleChecker+Invalid, 6976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1166 IncrementalHoareTripleChecker+Valid, 5809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2021-12-18 04:36:32,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7718 Valid, 14558 Invalid, 6976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1166 Valid, 5809 Invalid, 1 Unknown, 0 Unchecked, 32.0s Time] [2021-12-18 04:36:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205490 states. [2021-12-18 04:36:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205490 to 199510. [2021-12-18 04:36:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199510 states, 147857 states have (on average 1.3827211427257418) internal successors, (204445), 151449 states have internal predecessors, (204445), 41835 states have call successors, (41835), 9538 states have call predecessors, (41835), 9817 states have return successors, (89588), 40954 states have call predecessors, (89588), 41834 states have call successors, (89588) [2021-12-18 04:36:43,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199510 states to 199510 states and 335868 transitions. [2021-12-18 04:36:43,931 INFO L78 Accepts]: Start accepts. Automaton has 199510 states and 335868 transitions. Word has length 98 [2021-12-18 04:36:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:36:43,931 INFO L470 AbstractCegarLoop]: Abstraction has 199510 states and 335868 transitions. [2021-12-18 04:36:43,931 INFO L471 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) [2021-12-18 04:36:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 199510 states and 335868 transitions. [2021-12-18 04:36:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-18 04:36:43,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:36:43,933 INFO L514 BasicCegarLoop]: 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] [2021-12-18 04:36:43,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 04:36:43,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:36:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:36:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash 956034598, now seen corresponding path program 1 times [2021-12-18 04:36:43,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:36:43,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487171590] [2021-12-18 04:36:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:36:43,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:36:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:36:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:36:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:36:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 04:36:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:36:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 04:36:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:36:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 04:36:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 04:36:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 04:36:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 04:36:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:36:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-12-18 04:36:44,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:36:44,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487171590] [2021-12-18 04:36:44,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487171590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:36:44,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:36:44,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:36:44,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429606026] [2021-12-18 04:36:44,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:36:44,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:36:44,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:36:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:36:44,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:36:44,373 INFO L87 Difference]: Start difference. First operand 199510 states and 335868 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) [2021-12-18 04:36:46,917 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 []