./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 4d014703 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-wip.dd.seqcomp-4d01470 [2021-11-02 18:59:37,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 18:59:37,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 18:59:37,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 18:59:37,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 18:59:37,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 18:59:37,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 18:59:37,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 18:59:37,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 18:59:37,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 18:59:37,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 18:59:37,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 18:59:37,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 18:59:37,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 18:59:37,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 18:59:37,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 18:59:37,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 18:59:37,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 18:59:37,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 18:59:37,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 18:59:37,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 18:59:37,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 18:59:37,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 18:59:37,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 18:59:37,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 18:59:37,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 18:59:37,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 18:59:37,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 18:59:37,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 18:59:37,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 18:59:37,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 18:59:37,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 18:59:37,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 18:59:37,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 18:59:37,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 18:59:37,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 18:59:37,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 18:59:37,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 18:59:37,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 18:59:37,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 18:59:37,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 18:59:37,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 18:59:37,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 18:59:37,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 18:59:37,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 18:59:37,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 18:59:37,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 18:59:37,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 18:59:37,578 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 18:59:37,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 18:59:37,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 18:59:37,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 18:59:37,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 18:59:37,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 18:59:37,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 18:59:37,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 18:59:37,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 18:59:37,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 18:59:37,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 18:59:37,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 18:59:37,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 18:59:37,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:59:37,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 18:59:37,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 18:59:37,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 18:59:37,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 18:59:37,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 18:59:37,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 18:59:37,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 18:59:37,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 18:59:37,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 18:59:37,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0271a94e9583537c53cc956cc665cf103175977e84d74a6d4144b032ac11f321 [2021-11-02 18:59:37,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 18:59:37,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 18:59:37,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 18:59:37,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 18:59:37,787 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 18:59:37,788 INFO L432 ainManager$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 [2021-11-02 18:59:37,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ed962e9/4104ce764ebd4ebdbf75bda16f833140/FLAG99bddb45c [2021-11-02 18:59:38,458 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 18:59:38,463 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 [2021-11-02 18:59:38,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ed962e9/4104ce764ebd4ebdbf75bda16f833140/FLAG99bddb45c [2021-11-02 18:59:38,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ed962e9/4104ce764ebd4ebdbf75bda16f833140 [2021-11-02 18:59:38,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 18:59:38,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 18:59:38,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 18:59:38,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 18:59:38,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 18:59:38,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:59:38" (1/1) ... [2021-11-02 18:59:38,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d530793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:38, skipping insertion in model container [2021-11-02 18:59:38,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 06:59:38" (1/1) ... [2021-11-02 18:59:38,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 18:59:38,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 18:59:39,393 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-02 18:59:39,411 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] [2021-11-02 18:59:39,745 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] [2021-11-02 18:59:40,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:59:40,488 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 18:59:40,568 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6098] [2021-11-02 18:59:40,569 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] [2021-11-02 18:59:40,580 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] [2021-11-02 18:59:40,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 18:59:40,887 INFO L208 MainTranslator]: Completed translation [2021-11-02 18:59:40,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40 WrapperNode [2021-11-02 18:59:40,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 18:59:40,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 18:59:40,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 18:59:40,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 18:59:40,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:40,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 18:59:41,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 18:59:41,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 18:59:41,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 18:59:41,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 18:59:41,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 18:59:41,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 18:59:41,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 18:59:41,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (1/1) ... [2021-11-02 18:59:41,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 18:59:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:59:41,712 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) [2021-11-02 18:59:41,731 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 [2021-11-02 18:59:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 18:59:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 18:59:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure send_to_lecd [2021-11-02 18:59:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure send_to_lecd [2021-11-02 18:59:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure __lec_arp_check_expire [2021-11-02 18:59:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __lec_arp_check_expire [2021-11-02 18:59:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure lec_flush_complete [2021-11-02 18:59:41,742 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_flush_complete [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure lec_send [2021-11-02 18:59:41,742 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_send [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 18:59:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_check_expire [2021-11-02 18:59:41,743 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_check_expire [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 18:59:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 18:59:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 18:59:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 18:59:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure lec_atm_send [2021-11-02 18:59:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_atm_send [2021-11-02 18:59:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 18:59:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 18:59:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 18:59:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure lec_arp_update [2021-11-02 18:59:41,744 INFO L138 BoogieDeclarations]: Found implementation of procedure lec_arp_update [2021-11-02 18:59:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 18:59:41,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 18:59:45,843 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 18:59:45,927 INFO L757 $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; [2021-11-02 18:59:45,929 INFO L757 $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; [2021-11-02 18:59:59,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 18:59:59,477 INFO L299 CfgBuilder]: Removed 1924 assume(true) statements. [2021-11-02 18:59:59,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:59:59 BoogieIcfgContainer [2021-11-02 18:59:59,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 18:59:59,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 18:59:59,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 18:59:59,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 18:59:59,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 06:59:38" (1/3) ... [2021-11-02 18:59:59,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11280fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:59:59, skipping insertion in model container [2021-11-02 18:59:59,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 06:59:40" (2/3) ... [2021-11-02 18:59:59,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11280fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 06:59:59, skipping insertion in model container [2021-11-02 18:59:59,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 06:59:59" (3/3) ... [2021-11-02 18:59:59,487 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 [2021-11-02 18:59:59,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 18:59:59,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-02 18:59:59,535 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 18:59:59,540 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 [2021-11-02 18:59:59,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-02 18:59:59,583 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) [2021-11-02 18:59:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 18:59:59,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:59:59,595 INFO L514 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] [2021-11-02 18:59:59,596 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)] === [2021-11-02 18:59:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:59:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash 636787877, now seen corresponding path program 1 times [2021-11-02 18:59:59,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:59:59,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739924026] [2021-11-02 18:59:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:59:59,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:00:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:00:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:00:00,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:00:00,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739924026] [2021-11-02 19:00:00,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739924026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:00:00,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:00:00,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:00:00,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283258824] [2021-11-02 19:00:00,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:00:00,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:00:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:00:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:00:00,297 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) [2021-11-02 19:00:02,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:00:07,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:00:26,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:01:07,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:01:07,199 INFO L93 Difference]: Finished difference Result 6922 states and 10309 transitions. [2021-11-02 19:01:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:01:07,202 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 [2021-11-02 19:01:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:01:07,238 INFO L225 Difference]: With dead ends: 6922 [2021-11-02 19:01:07,238 INFO L226 Difference]: Without dead ends: 4501 [2021-11-02 19:01:07,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:01:07,260 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 3182 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 6769 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61432.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 6773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6769 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65830.61ms IncrementalHoareTripleChecker+Time [2021-11-02 19:01:07,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3184 Valid, 175 Invalid, 6773 Unknown, 0 Unchecked, 91.36ms Time], IncrementalHoareTripleChecker [1 Valid, 6769 Invalid, 3 Unknown, 0 Unchecked, 65830.61ms Time] [2021-11-02 19:01:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-11-02 19:01:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4477. [2021-11-02 19:01:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4384 states have (on average 1.4705748175182483) internal successors, (6447), 4405 states have internal predecessors, (6447), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2021-11-02 19:01:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 6571 transitions. [2021-11-02 19:01:07,476 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 6571 transitions. Word has length 37 [2021-11-02 19:01:07,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:01:07,478 INFO L470 AbstractCegarLoop]: Abstraction has 4477 states and 6571 transitions. [2021-11-02 19:01:07,478 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) [2021-11-02 19:01:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 6571 transitions. [2021-11-02 19:01:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 19:01:07,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:01:07,486 INFO L514 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] [2021-11-02 19:01:07,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 19:01:07,486 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)] === [2021-11-02 19:01:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:01:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash 400817735, now seen corresponding path program 1 times [2021-11-02 19:01:07,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:01:07,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531678685] [2021-11-02 19:01:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:01:07,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:01:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:01:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:01:08,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:01:08,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531678685] [2021-11-02 19:01:08,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531678685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:01:08,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:01:08,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 19:01:08,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863816371] [2021-11-02 19:01:08,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 19:01:08,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:01:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 19:01:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:01:08,007 INFO L87 Difference]: Start difference. First operand 4477 states and 6571 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) [2021-11-02 19:01:10,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:01:15,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:01:22,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:01:36,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:01:49,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:02:11,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:03:35,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:03:35,978 INFO L93 Difference]: Finished difference Result 21869 states and 32649 transitions. [2021-11-02 19:03:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 19:03:35,978 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 [2021-11-02 19:03:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:03:36,049 INFO L225 Difference]: With dead ends: 21869 [2021-11-02 19:03:36,049 INFO L226 Difference]: Without dead ends: 17446 [2021-11-02 19:03:36,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 123.20ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:03:36,074 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 12837 mSDsluCounter, 13114 mSDsCounter, 0 mSdLazyCounter, 16930 mSolverCounterSat, 147 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139172.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12837 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 17080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 217.35ms SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 16930 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146059.58ms IncrementalHoareTripleChecker+Time [2021-11-02 19:03:36,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12837 Valid, 488 Invalid, 17080 Unknown, 0 Unchecked, 217.35ms Time], IncrementalHoareTripleChecker [147 Valid, 16930 Invalid, 3 Unknown, 0 Unchecked, 146059.58ms Time] [2021-11-02 19:03:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17446 states. [2021-11-02 19:03:36,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17446 to 17344. [2021-11-02 19:03:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17344 states, 17026 states have (on average 1.465053447668272) internal successors, (24944), 17063 states have internal predecessors, (24944), 232 states have call successors, (232), 72 states have call predecessors, (232), 72 states have return successors, (568), 240 states have call predecessors, (568), 232 states have call successors, (568) [2021-11-02 19:03:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17344 states to 17344 states and 25744 transitions. [2021-11-02 19:03:36,479 INFO L78 Accepts]: Start accepts. Automaton has 17344 states and 25744 transitions. Word has length 45 [2021-11-02 19:03:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:03:36,480 INFO L470 AbstractCegarLoop]: Abstraction has 17344 states and 25744 transitions. [2021-11-02 19:03:36,481 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) [2021-11-02 19:03:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 17344 states and 25744 transitions. [2021-11-02 19:03:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 19:03:36,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:03:36,484 INFO L514 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] [2021-11-02 19:03:36,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 19:03:36,485 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)] === [2021-11-02 19:03:36,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:03:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1639119721, now seen corresponding path program 1 times [2021-11-02 19:03:36,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:03:36,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143647489] [2021-11-02 19:03:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:03:36,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:03:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:03:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:03:36,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:03:36,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143647489] [2021-11-02 19:03:36,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143647489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:03:36,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:03:36,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 19:03:36,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845807060] [2021-11-02 19:03:36,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 19:03:36,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:03:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 19:03:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:03:36,946 INFO L87 Difference]: Start difference. First operand 17344 states and 25744 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) [2021-11-02 19:03:39,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:03:44,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:04:07,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:04:25,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:04:59,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:05:40,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:06:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:06:43,867 INFO L93 Difference]: Finished difference Result 85910 states and 132498 transitions. [2021-11-02 19:06:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 19:06:43,868 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 [2021-11-02 19:06:43,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:06:44,146 INFO L225 Difference]: With dead ends: 85910 [2021-11-02 19:06:44,146 INFO L226 Difference]: Without dead ends: 68620 [2021-11-02 19:06:44,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 123.61ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:06:44,266 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 9763 mSDsluCounter, 19138 mSDsCounter, 0 mSdLazyCounter, 23153 mSolverCounterSat, 87 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176491.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9763 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 23245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 194.51ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 23153 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184573.66ms IncrementalHoareTripleChecker+Time [2021-11-02 19:06:44,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9763 Valid, 554 Invalid, 23245 Unknown, 0 Unchecked, 194.51ms Time], IncrementalHoareTripleChecker [87 Valid, 23153 Invalid, 5 Unknown, 0 Unchecked, 184573.66ms Time] [2021-11-02 19:06:44,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68620 states. [2021-11-02 19:06:46,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68620 to 68500. [2021-11-02 19:06:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68500 states, 67318 states have (on average 1.4594907751270092) internal successors, (98250), 67395 states have internal predecessors, (98250), 880 states have call successors, (880), 288 states have call predecessors, (880), 288 states have return successors, (5144), 944 states have call predecessors, (5144), 880 states have call successors, (5144) [2021-11-02 19:06:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68500 states to 68500 states and 104274 transitions. [2021-11-02 19:06:46,504 INFO L78 Accepts]: Start accepts. Automaton has 68500 states and 104274 transitions. Word has length 46 [2021-11-02 19:06:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:06:46,504 INFO L470 AbstractCegarLoop]: Abstraction has 68500 states and 104274 transitions. [2021-11-02 19:06:46,505 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) [2021-11-02 19:06:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 68500 states and 104274 transitions. [2021-11-02 19:06:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 19:06:46,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:06:46,506 INFO L514 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] [2021-11-02 19:06:46,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 19:06:46,507 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)] === [2021-11-02 19:06:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:06:46,507 INFO L85 PathProgramCache]: Analyzing trace with hash -217693832, now seen corresponding path program 1 times [2021-11-02 19:06:46,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:06:46,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680087018] [2021-11-02 19:06:46,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:06:46,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:06:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:06:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:06:46,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:06:46,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680087018] [2021-11-02 19:06:46,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680087018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:06:46,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:06:46,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 19:06:46,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126644720] [2021-11-02 19:06:46,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 19:06:46,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:06:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 19:06:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:06:46,991 INFO L87 Difference]: Start difference. First operand 68500 states and 104274 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) [2021-11-02 19:06:49,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:06:53,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:06:59,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:07:11,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:08:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:08:47,410 INFO L93 Difference]: Finished difference Result 340192 states and 563160 transitions. [2021-11-02 19:08:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 19:08:47,410 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 [2021-11-02 19:08:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:08:49,160 INFO L225 Difference]: With dead ends: 340192 [2021-11-02 19:08:49,160 INFO L226 Difference]: Without dead ends: 271746 [2021-11-02 19:08:49,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 108.81ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:08:49,686 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 16386 mSDsluCounter, 9774 mSDsCounter, 0 mSdLazyCounter, 13828 mSolverCounterSat, 297 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108236.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16386 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 14129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 153.28ms SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 13828 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114007.63ms IncrementalHoareTripleChecker+Time [2021-11-02 19:08:49,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16386 Valid, 377 Invalid, 14129 Unknown, 0 Unchecked, 153.28ms Time], IncrementalHoareTripleChecker [297 Valid, 13828 Invalid, 4 Unknown, 0 Unchecked, 114007.63ms Time] [2021-11-02 19:08:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271746 states. [2021-11-02 19:08:56,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271746 to 271590. [2021-11-02 19:08:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271590 states, 267096 states have (on average 1.4545631533231498) internal successors, (388508), 267237 states have internal predecessors, (388508), 3328 states have call successors, (3328), 1152 states have call predecessors, (3328), 1152 states have return successors, (46526), 3712 states have call predecessors, (46526), 3328 states have call successors, (46526) [2021-11-02 19:08:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271590 states to 271590 states and 438362 transitions. [2021-11-02 19:08:58,424 INFO L78 Accepts]: Start accepts. Automaton has 271590 states and 438362 transitions. Word has length 47 [2021-11-02 19:08:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:08:58,424 INFO L470 AbstractCegarLoop]: Abstraction has 271590 states and 438362 transitions. [2021-11-02 19:08:58,425 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) [2021-11-02 19:08:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 271590 states and 438362 transitions. [2021-11-02 19:08:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 19:08:58,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:08:58,427 INFO L514 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] [2021-11-02 19:08:58,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 19:08:58,427 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)] === [2021-11-02 19:08:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:08:58,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1980233144, now seen corresponding path program 1 times [2021-11-02 19:08:58,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:08:58,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970394337] [2021-11-02 19:08:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:08:58,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:08:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:08:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:08:58,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:08:58,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970394337] [2021-11-02 19:08:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970394337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:08:58,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:08:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 19:08:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250106580] [2021-11-02 19:08:58,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 19:08:58,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:08:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 19:08:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 19:08:58,867 INFO L87 Difference]: Start difference. First operand 271590 states and 438362 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) [2021-11-02 19:09:00,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:09:05,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:09:23,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:09:36,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:10:05,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:10:35,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []