./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 6c24879c 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-?-6c24879 [2022-07-12 12:44:12,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:44:12,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:44:12,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:44:12,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:44:12,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:44:12,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:44:12,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:44:12,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:44:12,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:44:12,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:44:12,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:44:12,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:44:12,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:44:12,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:44:12,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:44:12,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:44:12,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:44:12,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:44:12,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:44:12,177 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:44:12,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:44:12,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:44:12,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:44:12,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:44:12,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:44:12,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:44:12,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:44:12,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:44:12,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:44:12,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:44:12,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:44:12,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:44:12,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:44:12,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:44:12,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:44:12,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:44:12,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:44:12,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:44:12,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:44:12,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:44:12,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:44:12,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:44:12,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:44:12,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:44:12,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:44:12,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:44:12,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:44:12,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:44:12,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:44:12,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:44:12,229 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:44:12,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:44:12,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:44:12,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:44:12,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:44:12,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:44:12,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:44:12,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:44:12,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:44:12,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:44:12,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:44:12,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:44:12,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:44:12,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:44:12,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:44:12,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:44:12,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2022-07-12 12:44:12,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:44:12,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:44:12,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:44:12,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:44:12,450 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:44:12,451 INFO L432 ainManager$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 [2022-07-12 12:44:12,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2116cb102/fff61825b6c240a99df3a98937b8aee8/FLAGeadec786e [2022-07-12 12:44:13,152 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:44:13,152 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 [2022-07-12 12:44:13,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2116cb102/fff61825b6c240a99df3a98937b8aee8/FLAGeadec786e [2022-07-12 12:44:13,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2116cb102/fff61825b6c240a99df3a98937b8aee8 [2022-07-12 12:44:13,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:44:13,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:44:13,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:44:13,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:44:13,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:44:13,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:44:13" (1/1) ... [2022-07-12 12:44:13,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ba7937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:13, skipping insertion in model container [2022-07-12 12:44:13,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:44:13" (1/1) ... [2022-07-12 12:44:13,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:44:13,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:44:14,065 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2022-07-12 12:44:14,066 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] [2022-07-12 12:44:14,564 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] [2022-07-12 12:44:15,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:44:15,751 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:44:15,823 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2022-07-12 12:44:15,825 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] [2022-07-12 12:44:15,842 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] [2022-07-12 12:44:16,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:44:16,222 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:44:16,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16 WrapperNode [2022-07-12 12:44:16,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:44:16,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:44:16,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:44:16,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:44:16,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,481 INFO L137 Inliner]: procedures = 286, calls = 2898, calls flagged for inlining = 145, calls inlined = 128, statements flattened = 5519 [2022-07-12 12:44:16,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:44:16,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:44:16,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:44:16,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:44:16,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:44:16,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:44:16,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:44:16,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:44:16,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (1/1) ... [2022-07-12 12:44:16,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:44:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:44:16,744 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) [2022-07-12 12:44:16,747 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 [2022-07-12 12:44:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-12 12:44:16,774 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-12 12:44:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:44:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-12 12:44:16,775 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-12 12:44:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:44:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:44:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:44:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-12 12:44:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-12 12:44:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2022-07-12 12:44:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2022-07-12 12:44:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-12 12:44:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-12 12:44:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2022-07-12 12:44:16,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2022-07-12 12:44:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:44:16,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:44:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-12 12:44:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_stop [2022-07-12 12:44:16,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_stop [2022-07-12 12:44:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:44:16,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:44:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2022-07-12 12:44:16,777 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2022-07-12 12:44:16,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 12:44:16,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 12:44:16,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:44:16,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:44:16,778 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-12 12:44:16,778 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-12 12:44:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-12 12:44:16,779 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-12 12:44:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_find [2022-07-12 12:44:16,779 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_find [2022-07-12 12:44:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 12:44:16,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 12:44:16,779 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2022-07-12 12:44:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2022-07-12 12:44:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-07-12 12:44:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-07-12 12:44:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure atm_may_send [2022-07-12 12:44:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_may_send [2022-07-12 12:44:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_open [2022-07-12 12:44:16,780 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_open [2022-07-12 12:44:16,780 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-12 12:44:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-12 12:44:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-12 12:44:16,781 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-12 12:44:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:44:16,781 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-12 12:44:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tx_timeout [2022-07-12 12:44:16,782 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tx_timeout [2022-07-12 12:44:16,782 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_empty [2022-07-12 12:44:16,782 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_empty [2022-07-12 12:44:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2022-07-12 12:44:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2022-07-12 12:44:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:44:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-12 12:44:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-12 12:44:16,783 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2022-07-12 12:44:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2022-07-12 12:44:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-07-12 12:44:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 12:44:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 12:44:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:44:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-07-12 12:44:16,785 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-07-12 12:44:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:44:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-12 12:44:16,785 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-12 12:44:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:44:16,785 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:44:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 12:44:16,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 12:44:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure lec_tbl_walk [2022-07-12 12:44:16,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_tbl_walk [2022-07-12 12:44:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:44:16,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:44:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-12 12:44:16,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-12 12:44:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:44:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:44:16,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:44:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure atm_force_charge [2022-07-12 12:44:16,787 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_force_charge [2022-07-12 12:44:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-12 12:44:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-12 12:44:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2022-07-12 12:44:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2022-07-12 12:44:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure atm_return [2022-07-12 12:44:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_return [2022-07-12 12:44:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 12:44:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 12:44:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:44:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-07-12 12:44:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-07-12 12:44:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure lec_get_idx [2022-07-12 12:44:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_get_idx [2022-07-12 12:44:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:44:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_add [2022-07-12 12:44:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_add [2022-07-12 12:44:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-12 12:44:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-12 12:44:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_add_head [2022-07-12 12:44:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_add_head [2022-07-12 12:44:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-12 12:44:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-12 12:44:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:44:16,791 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:44:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure lec_change_mtu [2022-07-12 12:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_change_mtu [2022-07-12 12:44:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2022-07-12 12:44:16,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2022-07-12 12:44:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-12 12:44:16,794 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-12 12:44:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-12 12:44:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-12 12:44:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-07-12 12:44:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-07-12 12:44:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:44:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:44:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure lec_seq_show [2022-07-12 12:44:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_seq_show [2022-07-12 12:44:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure vcc_release_async [2022-07-12 12:44:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure vcc_release_async [2022-07-12 12:44:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:44:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_del [2022-07-12 12:44:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_del [2022-07-12 12:44:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure seq_release_private [2022-07-12 12:44:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_release_private [2022-07-12 12:44:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:44:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:44:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure lec_set_multicast_list [2022-07-12 12:44:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_set_multicast_list [2022-07-12 12:44:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_put [2022-07-12 12:44:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_put [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_hold [2022-07-12 12:44:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_hold [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-12 12:44:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 12:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-07-12 12:44:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-07-12 12:44:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:44:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 12:44:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2022-07-12 12:44:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2022-07-12 12:44:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-12 12:44:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-12 12:44:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure kmemdup [2022-07-12 12:44:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemdup [2022-07-12 12:44:16,804 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_close [2022-07-12 12:44:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_close [2022-07-12 12:44:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:44:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:44:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-07-12 12:44:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-07-12 12:44:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure make_entry [2022-07-12 12:44:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure make_entry [2022-07-12 12:44:16,805 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 12:44:16,805 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 12:44:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_remove [2022-07-12 12:44:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_remove [2022-07-12 12:44:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:44:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2022-07-12 12:44:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2022-07-12 12:44:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_clear_vccs [2022-07-12 12:44:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_clear_vccs [2022-07-12 12:44:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2022-07-12 12:44:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2022-07-12 12:44:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:44:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:44:17,390 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:44:17,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:44:17,683 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:44:23,988 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-12 12:44:25,567 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; [2022-07-12 12:44:25,567 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; [2022-07-12 12:44:30,271 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:44:30,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:44:30,298 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:44:30,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:44:30 BoogieIcfgContainer [2022-07-12 12:44:30,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:44:30,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:44:30,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:44:30,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:44:30,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:44:13" (1/3) ... [2022-07-12 12:44:30,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f33d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:44:30, skipping insertion in model container [2022-07-12 12:44:30,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:44:16" (2/3) ... [2022-07-12 12:44:30,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f33d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:44:30, skipping insertion in model container [2022-07-12 12:44:30,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:44:30" (3/3) ... [2022-07-12 12:44:30,308 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 [2022-07-12 12:44:30,320 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:44:30,320 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:44:30,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:44:30,385 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@43edd651, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@714f7045 [2022-07-12 12:44:30,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:44:30,394 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) [2022-07-12 12:44:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 12:44:30,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:44:30,409 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] [2022-07-12 12:44:30,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:44:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:44:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash -692835284, now seen corresponding path program 1 times [2022-07-12 12:44:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:44:30,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73907168] [2022-07-12 12:44:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:44:30,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:44:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:44:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:44:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:44:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:44:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:44:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:44:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:44:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:44:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:44:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:44:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 12:44:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-12 12:44:31,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:44:31,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73907168] [2022-07-12 12:44:31,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73907168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:44:31,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:44:31,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:44:31,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671925018] [2022-07-12 12:44:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:44:31,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:44:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:44:31,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:44:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:44:31,277 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) [2022-07-12 12:44:33,662 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 [] [2022-07-12 12:44:36,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:44:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:44:44,430 INFO L93 Difference]: Finished difference Result 5002 states and 7502 transitions. [2022-07-12 12:44:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:44:44,433 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 [2022-07-12 12:44:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:44:44,477 INFO L225 Difference]: With dead ends: 5002 [2022-07-12 12:44:44,477 INFO L226 Difference]: Without dead ends: 3281 [2022-07-12 12:44:44,493 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 [2022-07-12 12:44:44,497 INFO L413 NwaCegarLoop]: 2683 mSDtfsCounter, 2741 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 803 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 5683 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:44:44,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2996 Valid, 5683 Invalid, 2376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [803 Valid, 1571 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2022-07-12 12:44:44,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2022-07-12 12:44:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3170. [2022-07-12 12:44:44,679 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) [2022-07-12 12:44:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4598 transitions. [2022-07-12 12:44:44,700 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4598 transitions. Word has length 86 [2022-07-12 12:44:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:44:44,702 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 4598 transitions. [2022-07-12 12:44:44,702 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) [2022-07-12 12:44:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4598 transitions. [2022-07-12 12:44:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 12:44:44,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:44:44,710 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] [2022-07-12 12:44:44,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:44:44,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:44:44,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:44:44,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2110448072, now seen corresponding path program 1 times [2022-07-12 12:44:44,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:44:44,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890056911] [2022-07-12 12:44:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:44:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:44:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:44:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:44:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:44:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:44:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:44:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:44:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:44:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:44:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:44:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:44:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 12:44:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:44:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-12 12:44:45,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:44:45,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890056911] [2022-07-12 12:44:45,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890056911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:44:45,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:44:45,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:44:45,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272558144] [2022-07-12 12:44:45,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:44:45,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:44:45,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:44:45,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:44:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:44:45,223 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) [2022-07-12 12:44:47,702 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 [] [2022-07-12 12:45:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:45:09,365 INFO L93 Difference]: Finished difference Result 16106 states and 24451 transitions. [2022-07-12 12:45:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:45:09,365 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 [2022-07-12 12:45:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:45:09,437 INFO L225 Difference]: With dead ends: 16106 [2022-07-12 12:45:09,437 INFO L226 Difference]: Without dead ends: 12960 [2022-07-12 12:45:09,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:45:09,463 INFO L413 NwaCegarLoop]: 3538 mSDtfsCounter, 10300 mSDsluCounter, 5960 mSDsCounter, 0 mSdLazyCounter, 4394 mSolverCounterSat, 3200 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10995 SdHoareTripleChecker+Valid, 9498 SdHoareTripleChecker+Invalid, 7595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 4394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:45:09,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10995 Valid, 9498 Invalid, 7595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3200 Valid, 4394 Invalid, 1 Unknown, 0 Unchecked, 23.1s Time] [2022-07-12 12:45:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2022-07-12 12:45:09,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 12554. [2022-07-12 12:45:09,881 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) [2022-07-12 12:45:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 18636 transitions. [2022-07-12 12:45:09,946 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 18636 transitions. Word has length 97 [2022-07-12 12:45:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:45:09,948 INFO L495 AbstractCegarLoop]: Abstraction has 12554 states and 18636 transitions. [2022-07-12 12:45:09,948 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) [2022-07-12 12:45:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 18636 transitions. [2022-07-12 12:45:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 12:45:09,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:45:09,952 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] [2022-07-12 12:45:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:45:09,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:45:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:45:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 409515402, now seen corresponding path program 1 times [2022-07-12 12:45:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:45:09,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109053610] [2022-07-12 12:45:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:45:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:45:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:45:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:45:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:45:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:45:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:45:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:45:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:45:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:45:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:45:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:45:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-12 12:45:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:45:10,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109053610] [2022-07-12 12:45:10,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109053610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:45:10,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:45:10,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:45:10,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868466133] [2022-07-12 12:45:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:45:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:45:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:45:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:45:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:45:10,310 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) [2022-07-12 12:45:12,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:45:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:45:40,968 INFO L93 Difference]: Finished difference Result 64140 states and 102067 transitions. [2022-07-12 12:45:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:45:40,968 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 [2022-07-12 12:45:40,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:45:41,253 INFO L225 Difference]: With dead ends: 64140 [2022-07-12 12:45:41,254 INFO L226 Difference]: Without dead ends: 51610 [2022-07-12 12:45:41,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:45:41,347 INFO L413 NwaCegarLoop]: 3415 mSDtfsCounter, 7289 mSDsluCounter, 8596 mSDsCounter, 0 mSdLazyCounter, 5999 mSolverCounterSat, 1693 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7986 SdHoareTripleChecker+Valid, 12011 SdHoareTripleChecker+Invalid, 7693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1693 IncrementalHoareTripleChecker+Valid, 5999 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:45:41,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7986 Valid, 12011 Invalid, 7693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1693 Valid, 5999 Invalid, 1 Unknown, 0 Unchecked, 29.0s Time] [2022-07-12 12:45:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51610 states. [2022-07-12 12:45:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51610 to 50082. [2022-07-12 12:45:42,812 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) [2022-07-12 12:45:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50082 states to 50082 states and 77490 transitions. [2022-07-12 12:45:43,388 INFO L78 Accepts]: Start accepts. Automaton has 50082 states and 77490 transitions. Word has length 98 [2022-07-12 12:45:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:45:43,390 INFO L495 AbstractCegarLoop]: Abstraction has 50082 states and 77490 transitions. [2022-07-12 12:45:43,390 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) [2022-07-12 12:45:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 50082 states and 77490 transitions. [2022-07-12 12:45:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 12:45:43,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:45:43,395 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] [2022-07-12 12:45:43,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:45:43,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:45:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:45:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 7251858, now seen corresponding path program 1 times [2022-07-12 12:45:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:45:43,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795233765] [2022-07-12 12:45:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:45:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:45:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:45:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:45:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:45:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:45:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:45:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:45:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:45:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:45:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:45:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:45:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:45:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:45:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-12 12:45:43,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:45:43,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795233765] [2022-07-12 12:45:43,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795233765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:45:43,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:45:43,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:45:43,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860046574] [2022-07-12 12:45:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:45:43,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:45:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:45:43,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:45:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:45:43,743 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) [2022-07-12 12:45:46,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:46:15,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:46:15,052 INFO L93 Difference]: Finished difference Result 255924 states and 449303 transitions. [2022-07-12 12:46:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:46:15,052 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 [2022-07-12 12:46:15,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:46:16,736 INFO L225 Difference]: With dead ends: 255924 [2022-07-12 12:46:16,737 INFO L226 Difference]: Without dead ends: 205866 [2022-07-12 12:46:17,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:46:17,118 INFO L413 NwaCegarLoop]: 3525 mSDtfsCounter, 8595 mSDsluCounter, 7610 mSDsCounter, 0 mSdLazyCounter, 4956 mSolverCounterSat, 1925 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9289 SdHoareTripleChecker+Valid, 11135 SdHoareTripleChecker+Invalid, 6882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1925 IncrementalHoareTripleChecker+Valid, 4956 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:46:17,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9289 Valid, 11135 Invalid, 6882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1925 Valid, 4956 Invalid, 1 Unknown, 0 Unchecked, 25.9s Time] [2022-07-12 12:46:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205866 states. [2022-07-12 12:46:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205866 to 199774. [2022-07-12 12:46:24,023 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) [2022-07-12 12:46:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199774 states to 199774 states and 336384 transitions. [2022-07-12 12:46:25,936 INFO L78 Accepts]: Start accepts. Automaton has 199774 states and 336384 transitions. Word has length 96 [2022-07-12 12:46:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:46:25,936 INFO L495 AbstractCegarLoop]: Abstraction has 199774 states and 336384 transitions. [2022-07-12 12:46:25,937 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) [2022-07-12 12:46:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 199774 states and 336384 transitions. [2022-07-12 12:46:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 12:46:25,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:46:25,939 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] [2022-07-12 12:46:25,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:46:25,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:46:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:46:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1039671616, now seen corresponding path program 1 times [2022-07-12 12:46:25,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:46:25,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434764791] [2022-07-12 12:46:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:46:25,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:46:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:46:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:46:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:46:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:46:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:46:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:46:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:46:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:46:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 12:46:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 12:46:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 12:46:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:46:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-12 12:46:26,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:46:26,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434764791] [2022-07-12 12:46:26,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434764791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:46:26,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:46:26,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:46:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28206853] [2022-07-12 12:46:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:46:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:46:26,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:46:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:46:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:46:26,305 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) [2022-07-12 12:46:28,744 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 [] [2022-07-12 12:47:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:47:25,353 INFO L93 Difference]: Finished difference Result 1020410 states and 2155779 transitions. [2022-07-12 12:47:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:47:25,354 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 [2022-07-12 12:47:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted.