./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 173e3943 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 0.2.1-dev-173e394 [2021-11-06 14:51:46,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:51:46,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:51:46,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:51:46,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:51:46,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:51:46,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:51:46,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:51:46,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:51:46,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:51:46,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:51:46,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:51:46,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:51:46,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:51:46,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:51:46,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:51:46,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:51:46,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:51:46,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:51:46,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:51:46,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:51:46,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:51:46,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:51:46,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:51:46,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:51:46,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:51:46,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:51:46,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:51:46,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:51:46,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:51:46,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:51:46,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:51:46,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:51:46,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:51:46,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:51:46,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:51:46,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:51:46,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:51:46,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:51:46,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:51:46,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:51:46,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:51:46,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:51:46,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:51:46,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:51:46,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:51:46,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:51:46,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:51:46,879 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:51:46,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:51:46,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:51:46,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:51:46,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:51:46,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:51:46,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:51:46,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:51:46,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:51:46,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:51:46,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:51:46,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:51:46,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:51:46,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:51:46,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:51:46,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:51:46,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:51:46,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:51:46,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:51:46,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:51:46,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:51:46,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:51:46,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:51:46,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-11-06 14:51:47,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:51:47,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:51:47,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:51:47,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:51:47,111 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:51:47,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-06 14:51:47,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74fc3e8f/302232c469c7488fa63534c8459356a7/FLAG85af0707f [2021-11-06 14:51:47,954 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:51:47,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-06 14:51:48,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74fc3e8f/302232c469c7488fa63534c8459356a7/FLAG85af0707f [2021-11-06 14:51:48,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74fc3e8f/302232c469c7488fa63534c8459356a7 [2021-11-06 14:51:48,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:51:48,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:51:48,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:51:48,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:51:48,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:51:48,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:51:48" (1/1) ... [2021-11-06 14:51:48,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f526e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:48, skipping insertion in model container [2021-11-06 14:51:48,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:51:48" (1/1) ... [2021-11-06 14:51:48,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:51:48,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:51:48,841 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-06 14:51:48,842 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-06 14:51:49,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-06 14:51:49,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:51:49,934 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:51:50,047 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-06 14:51:50,047 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6099-6100] [2021-11-06 14:51:50,055 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i[187542,187555] [2021-11-06 14:51:50,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:51:50,380 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:51:50,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50 WrapperNode [2021-11-06 14:51:50,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:51:50,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:51:50,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:51:50,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:51:50,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:50,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:50,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:51:50,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:51:50,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:51:50,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:51:50,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:50,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:50,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:50,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:51,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:51,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:51,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:51,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:51:51,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:51:51,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:51:51,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:51:51,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (1/1) ... [2021-11-06 14:51:51,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:51:51,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:51:51,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 14:51:51,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 14:51:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:51:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:51:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2021-11-06 14:51:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2021-11-06 14:51:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2021-11-06 14:51:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2021-11-06 14:51:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 14:51:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:51:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:51:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2021-11-06 14:51:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2021-11-06 14:51:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:51:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2021-11-06 14:51:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2021-11-06 14:51:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:51:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:51:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:51:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:51:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2021-11-06 14:51:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2021-11-06 14:51:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:51:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:51:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:51:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:51:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:51:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:51:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:51:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:51:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2021-11-06 14:51:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2021-11-06 14:51:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 14:51:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 14:51:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:51:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2021-11-06 14:51:51,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2021-11-06 14:51:51,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:51:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:52:01,362 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-06 14:52:04,765 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##79: assume !(0 != (lec_addr_delete_~____ptr___0~4.base + lec_addr_delete_~____ptr___0~4.offset) % 18446744073709551616);lec_addr_delete_~tmp___2~14.base, lec_addr_delete_~tmp___2~14.offset := 0, 0;lec_addr_delete_~entry~10.base, lec_addr_delete_~entry~10.offset := lec_addr_delete_~tmp___2~14.base, lec_addr_delete_~tmp___2~14.offset; [2021-11-06 14:52:04,765 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##78: assume 0 != (lec_addr_delete_~____ptr___0~4.base + lec_addr_delete_~____ptr___0~4.offset) % 18446744073709551616;lec_addr_delete_~__mptr___0~5.base, lec_addr_delete_~__mptr___0~5.offset := lec_addr_delete_~____ptr___0~4.base, lec_addr_delete_~____ptr___0~4.offset;lec_addr_delete_~tmp___2~14.base, lec_addr_delete_~tmp___2~14.offset := lec_addr_delete_~__mptr___0~5.base, lec_addr_delete_~__mptr___0~5.offset; [2021-11-06 14:52:33,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:52:33,480 INFO L299 CfgBuilder]: Removed 1924 assume(true) statements. [2021-11-06 14:52:33,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:52:33 BoogieIcfgContainer [2021-11-06 14:52:33,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:52:33,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:52:33,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:52:33,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:52:33,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:51:48" (1/3) ... [2021-11-06 14:52:33,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4340f177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:52:33, skipping insertion in model container [2021-11-06 14:52:33,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:51:50" (2/3) ... [2021-11-06 14:52:33,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4340f177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:52:33, skipping insertion in model container [2021-11-06 14:52:33,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:52:33" (3/3) ... [2021-11-06 14:52:33,494 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-net--atm--lec.ko-entry_point.cil.out.i [2021-11-06 14:52:33,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:52:33,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-06 14:52:33,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:52:33,550 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 14:52:33,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-06 14:52:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 2379 states, 2323 states have (on average 1.4860094705122686) internal successors, (3452), 2341 states have internal predecessors, (3452), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-06 14:52:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 14:52:33,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:33,604 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:33,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 14:52:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:33,609 INFO L85 PathProgramCache]: Analyzing trace with hash 636787877, now seen corresponding path program 1 times [2021-11-06 14:52:33,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:33,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643243329] [2021-11-06 14:52:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:33,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:52:34,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:34,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643243329] [2021-11-06 14:52:34,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643243329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:34,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:34,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:52:34,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104498125] [2021-11-06 14:52:34,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:52:34,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:34,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:52:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:52:34,458 INFO L87 Difference]: Start difference. First operand has 2379 states, 2323 states have (on average 1.4860094705122686) internal successors, (3452), 2341 states have internal predecessors, (3452), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:34,856 INFO L93 Difference]: Finished difference Result 6954 states and 10351 transitions. [2021-11-06 14:52:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:52:34,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-06 14:52:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:34,897 INFO L225 Difference]: With dead ends: 6954 [2021-11-06 14:52:34,897 INFO L226 Difference]: Without dead ends: 4533 [2021-11-06 14:52:34,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:52:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2021-11-06 14:52:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4509. [2021-11-06 14:52:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4509 states, 4416 states have (on average 1.4698822463768115) internal successors, (6491), 4437 states have internal predecessors, (6491), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-06 14:52:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 6613 transitions. [2021-11-06 14:52:35,115 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 6613 transitions. Word has length 37 [2021-11-06 14:52:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:35,115 INFO L470 AbstractCegarLoop]: Abstraction has 4509 states and 6613 transitions. [2021-11-06 14:52:35,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 6613 transitions. [2021-11-06 14:52:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 14:52:35,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:35,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:35,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:52:35,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 14:52:35,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash 400817735, now seen corresponding path program 1 times [2021-11-06 14:52:35,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:35,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114634127] [2021-11-06 14:52:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:35,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:52:35,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:35,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114634127] [2021-11-06 14:52:35,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114634127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:35,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:35,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:35,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757900950] [2021-11-06 14:52:35,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:35,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:35,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:35,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:35,650 INFO L87 Difference]: Start difference. First operand 4509 states and 6613 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:42,318 INFO L93 Difference]: Finished difference Result 22125 states and 32991 transitions. [2021-11-06 14:52:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:52:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 14:52:42,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:42,433 INFO L225 Difference]: With dead ends: 22125 [2021-11-06 14:52:42,433 INFO L226 Difference]: Without dead ends: 17670 [2021-11-06 14:52:42,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17670 states. [2021-11-06 14:52:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17670 to 17568. [2021-11-06 14:52:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17568 states, 17250 states have (on average 1.4638840579710144) internal successors, (25252), 17287 states have internal predecessors, (25252), 232 states have call successors, (232), 72 states have call predecessors, (232), 72 states have return successors, (560), 240 states have call predecessors, (560), 232 states have call successors, (560) [2021-11-06 14:52:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17568 states to 17568 states and 26044 transitions. [2021-11-06 14:52:43,196 INFO L78 Accepts]: Start accepts. Automaton has 17568 states and 26044 transitions. Word has length 45 [2021-11-06 14:52:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 17568 states and 26044 transitions. [2021-11-06 14:52:43,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 17568 states and 26044 transitions. [2021-11-06 14:52:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 14:52:43,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:43,202 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:52:43,202 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 14:52:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1639119721, now seen corresponding path program 1 times [2021-11-06 14:52:43,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:43,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997820360] [2021-11-06 14:52:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:43,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:52:43,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:43,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997820360] [2021-11-06 14:52:43,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997820360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:43,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:43,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:43,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850294091] [2021-11-06 14:52:43,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:43,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:43,659 INFO L87 Difference]: Start difference. First operand 17568 states and 26044 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:50,032 INFO L93 Difference]: Finished difference Result 87126 states and 134130 transitions. [2021-11-06 14:52:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:52:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-06 14:52:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:50,388 INFO L225 Difference]: With dead ends: 87126 [2021-11-06 14:52:50,388 INFO L226 Difference]: Without dead ends: 69612 [2021-11-06 14:52:50,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69612 states. [2021-11-06 14:52:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69612 to 69492. [2021-11-06 14:52:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69492 states, 68310 states have (on average 1.4582637973942323) internal successors, (99614), 68387 states have internal predecessors, (99614), 880 states have call successors, (880), 288 states have call predecessors, (880), 288 states have return successors, (5112), 944 states have call predecessors, (5112), 880 states have call successors, (5112) [2021-11-06 14:52:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69492 states to 69492 states and 105606 transitions. [2021-11-06 14:52:53,010 INFO L78 Accepts]: Start accepts. Automaton has 69492 states and 105606 transitions. Word has length 46 [2021-11-06 14:52:53,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:53,011 INFO L470 AbstractCegarLoop]: Abstraction has 69492 states and 105606 transitions. [2021-11-06 14:52:53,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:52:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 69492 states and 105606 transitions. [2021-11-06 14:52:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 14:52:53,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:53,014 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:53,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:52:53,015 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 14:52:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -217693832, now seen corresponding path program 1 times [2021-11-06 14:52:53,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:53,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455983224] [2021-11-06 14:52:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:53,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:52:53,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:53,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455983224] [2021-11-06 14:52:53,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455983224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:53,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:53,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:53,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143328062] [2021-11-06 14:52:53,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:53,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:53,714 INFO L87 Difference]: Start difference. First operand 69492 states and 105606 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:53:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:53:03,886 INFO L93 Difference]: Finished difference Result 345728 states and 570624 transitions. [2021-11-06 14:53:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:53:03,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-06 14:53:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:53:05,687 INFO L225 Difference]: With dead ends: 345728 [2021-11-06 14:53:05,688 INFO L226 Difference]: Without dead ends: 276290 [2021-11-06 14:53:06,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:53:06,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276290 states. [2021-11-06 14:53:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276290 to 276134. [2021-11-06 14:53:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276134 states, 271640 states have (on average 1.4532763952289796) internal successors, (394768), 271781 states have internal predecessors, (394768), 3328 states have call successors, (3328), 1152 states have call predecessors, (3328), 1152 states have return successors, (46398), 3712 states have call predecessors, (46398), 3328 states have call successors, (46398) [2021-11-06 14:53:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276134 states to 276134 states and 444494 transitions. [2021-11-06 14:53:16,623 INFO L78 Accepts]: Start accepts. Automaton has 276134 states and 444494 transitions. Word has length 47 [2021-11-06 14:53:16,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:53:16,623 INFO L470 AbstractCegarLoop]: Abstraction has 276134 states and 444494 transitions. [2021-11-06 14:53:16,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:53:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 276134 states and 444494 transitions. [2021-11-06 14:53:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 14:53:16,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:53:16,625 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:53:16,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:53:16,626 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION === [lec_arp_updateErr0ASSERT_VIOLATIONERROR_FUNCTION, send_to_lecdErr0ASSERT_VIOLATIONERROR_FUNCTION, lec_atm_sendErr0ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-06 14:53:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:53:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1980233144, now seen corresponding path program 1 times [2021-11-06 14:53:16,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:53:16,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631882636] [2021-11-06 14:53:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:53:16,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:53:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:53:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:53:17,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:53:17,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631882636] [2021-11-06 14:53:17,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631882636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:53:17,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:53:17,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:53:17,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70409988] [2021-11-06 14:53:17,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:53:17,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:53:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:53:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:53:17,435 INFO L87 Difference]: Start difference. First operand 276134 states and 444494 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)