./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.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 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:21:52,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:21:52,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:21:52,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:21:52,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:21:52,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:21:52,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:21:52,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:21:52,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:21:52,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:21:52,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:21:52,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:21:52,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:21:52,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:21:52,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:21:52,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:21:52,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:21:52,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:21:52,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:21:52,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:21:52,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:21:52,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:21:52,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:21:52,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:21:52,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:21:52,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:21:52,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:21:52,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:21:52,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:21:52,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:21:52,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:21:52,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:21:52,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:21:52,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:21:52,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:21:52,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:21:52,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:21:52,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:21:52,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:21:52,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:21:52,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:21:52,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:21:52,787 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:21:52,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:21:52,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:21:52,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:21:52,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:21:52,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:21:52,792 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:21:52,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:21:52,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:21:52,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:21:52,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:21:52,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:21:52,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:21:52,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:21:52,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:21:52,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:21:52,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:21:52,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:21:52,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:21:52,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:21:52,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:21:52,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:21:52,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:21:52,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:21:52,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:21:52,797 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:21:52,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:21:52,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:21:52,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:21:52,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f [2021-11-06 17:21:53,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:21:53,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:21:53,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:21:53,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:21:53,055 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:21:53,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-06 17:21:53,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f82150c0/fac04aef658341a3887ef03ec5853881/FLAG621e7f1e9 [2021-11-06 17:21:53,933 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:21:53,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-06 17:21:54,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f82150c0/fac04aef658341a3887ef03ec5853881/FLAG621e7f1e9 [2021-11-06 17:21:54,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f82150c0/fac04aef658341a3887ef03ec5853881 [2021-11-06 17:21:54,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:21:54,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:21:54,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:21:54,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:21:54,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:21:54,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:21:54" (1/1) ... [2021-11-06 17:21:54,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc9bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:54, skipping insertion in model container [2021-11-06 17:21:54,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:21:54" (1/1) ... [2021-11-06 17:21:54,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:21:54,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:21:56,580 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2021-11-06 17:21:56,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:21:56,688 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:21:57,084 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2021-11-06 17:21:57,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:21:57,239 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:21:57,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57 WrapperNode [2021-11-06 17:21:57,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:21:57,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:21:57,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:21:57,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:21:57,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:21:57,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:00,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:22:00,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:22:00,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:22:00,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:22:00,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:00,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:00,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:00,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:02,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:02,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:02,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:03,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:22:03,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:22:03,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:22:03,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:22:03,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (1/1) ... [2021-11-06 17:22:03,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:22:03,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:22:03,488 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 17:22:03,510 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 17:22:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-06 17:22:03,531 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-06 17:22:03,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:22:03,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:22:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-06 17:22:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-06 17:22:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-06 17:22:03,533 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-06 17:22:03,533 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-06 17:22:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-06 17:22:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-06 17:22:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-06 17:22:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-06 17:22:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-06 17:22:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-06 17:22:03,534 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-06 17:22:03,534 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-06 17:22:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-06 17:22:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:22:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:22:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-06 17:22:03,535 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-06 17:22:03,535 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-06 17:22:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-06 17:22:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-06 17:22:03,536 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-06 17:22:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:22:03,536 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-06 17:22:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-06 17:22:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-06 17:22:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:22:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-06 17:22:03,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-06 17:22:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:22:03,537 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-06 17:22:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-06 17:22:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-06 17:22:03,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-06 17:22:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:22:03,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:22:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:22:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-06 17:22:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-06 17:22:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-06 17:22:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-06 17:22:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:22:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:22:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:22:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:22:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:22:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-06 17:22:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-06 17:22:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-06 17:22:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-06 17:22:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-06 17:22:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-06 17:22:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-06 17:22:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-06 17:22:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:22:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-06 17:22:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:22:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:22:51,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:22:51,896 INFO L299 CfgBuilder]: Removed 22054 assume(true) statements. [2021-11-06 17:22:51,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:22:51 BoogieIcfgContainer [2021-11-06 17:22:51,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:22:51,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:22:51,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:22:51,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:22:51,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:21:54" (1/3) ... [2021-11-06 17:22:51,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6a0ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:22:51, skipping insertion in model container [2021-11-06 17:22:51,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:21:57" (2/3) ... [2021-11-06 17:22:51,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6a0ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:22:51, skipping insertion in model container [2021-11-06 17:22:51,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:22:51" (3/3) ... [2021-11-06 17:22:51,919 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-06 17:22:51,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:22:51,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-06 17:22:52,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:22:52,023 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 17:22:52,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-06 17:22:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 17763 states, 17650 states have (on average 1.301643059490085) internal successors, (22974), 17659 states have internal predecessors, (22974), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-06 17:22:52,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 17:22:52,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:52,258 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, 1, 1] [2021-11-06 17:22:52,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:22:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1334055758, now seen corresponding path program 1 times [2021-11-06 17:22:52,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:52,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112948797] [2021-11-06 17:22:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:52,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:52,818 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 17:22:52,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:52,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112948797] [2021-11-06 17:22:52,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112948797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:52,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:52,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:22:52,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365191144] [2021-11-06 17:22:52,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:22:52,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:22:52,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:22:52,870 INFO L87 Difference]: Start difference. First operand has 17763 states, 17650 states have (on average 1.301643059490085) internal successors, (22974), 17659 states have internal predecessors, (22974), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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 17:22:53,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:22:53,522 INFO L93 Difference]: Finished difference Result 35069 states and 45744 transitions. [2021-11-06 17:22:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:22:53,524 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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 50 [2021-11-06 17:22:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:22:53,667 INFO L225 Difference]: With dead ends: 35069 [2021-11-06 17:22:53,667 INFO L226 Difference]: Without dead ends: 17236 [2021-11-06 17:22:53,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:22:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17236 states. [2021-11-06 17:22:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17236 to 17236. [2021-11-06 17:22:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17236 states, 17124 states have (on average 1.2874328427937398) internal successors, (22046), 17132 states have internal predecessors, (22046), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-11-06 17:22:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17236 states to 17236 states and 22208 transitions. [2021-11-06 17:22:54,503 INFO L78 Accepts]: Start accepts. Automaton has 17236 states and 22208 transitions. Word has length 50 [2021-11-06 17:22:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:22:54,504 INFO L470 AbstractCegarLoop]: Abstraction has 17236 states and 22208 transitions. [2021-11-06 17:22:54,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 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 17:22:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 17236 states and 22208 transitions. [2021-11-06 17:22:54,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 17:22:54,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:54,512 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, 1, 1] [2021-11-06 17:22:54,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:22:54,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:22:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash -978942790, now seen corresponding path program 1 times [2021-11-06 17:22:54,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:54,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805165174] [2021-11-06 17:22:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:54,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:55,045 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 17:22:55,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:55,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805165174] [2021-11-06 17:22:55,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805165174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:55,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:55,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:22:55,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909170268] [2021-11-06 17:22:55,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:22:55,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:55,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:22:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:22:55,049 INFO L87 Difference]: Start difference. First operand 17236 states and 22208 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 17:22:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:22:56,615 INFO L93 Difference]: Finished difference Result 50711 states and 65285 transitions. [2021-11-06 17:22:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:22:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 50 [2021-11-06 17:22:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:22:56,851 INFO L225 Difference]: With dead ends: 50711 [2021-11-06 17:22:56,852 INFO L226 Difference]: Without dead ends: 33500 [2021-11-06 17:22:56,958 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 17:22:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33500 states. [2021-11-06 17:22:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33500 to 31559. [2021-11-06 17:22:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31559 states, 31345 states have (on average 1.2929334822140692) internal successors, (40527), 31353 states have internal predecessors, (40527), 161 states have call successors, (161), 44 states have call predecessors, (161), 44 states have return successors, (161), 161 states have call predecessors, (161), 161 states have call successors, (161) [2021-11-06 17:22:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31559 states to 31559 states and 40849 transitions. [2021-11-06 17:22:58,025 INFO L78 Accepts]: Start accepts. Automaton has 31559 states and 40849 transitions. Word has length 50 [2021-11-06 17:22:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:22:58,026 INFO L470 AbstractCegarLoop]: Abstraction has 31559 states and 40849 transitions. [2021-11-06 17:22:58,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 17:22:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 31559 states and 40849 transitions. [2021-11-06 17:22:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 17:22:58,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:22:58,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:22:58,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:22:58,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:22:58,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:22:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash -41393822, now seen corresponding path program 1 times [2021-11-06 17:22:58,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:22:58,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237104672] [2021-11-06 17:22:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:22:58,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:22:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:22:58,327 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 17:22:58,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:22:58,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237104672] [2021-11-06 17:22:58,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237104672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:22:58,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:22:58,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:22:58,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905967302] [2021-11-06 17:22:58,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:22:58,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:22:58,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:22:58,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:22:58,330 INFO L87 Difference]: Start difference. First operand 31559 states and 40849 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 17:23:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:00,751 INFO L93 Difference]: Finished difference Result 107607 states and 139916 transitions. [2021-11-06 17:23:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:23:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2021-11-06 17:23:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:01,229 INFO L225 Difference]: With dead ends: 107607 [2021-11-06 17:23:01,230 INFO L226 Difference]: Without dead ends: 76073 [2021-11-06 17:23:01,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:23:01,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76073 states. [2021-11-06 17:23:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76073 to 60345. [2021-11-06 17:23:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60345 states, 59926 states have (on average 1.2896739311817909) internal successors, (77285), 59934 states have internal predecessors, (77285), 322 states have call successors, (322), 88 states have call predecessors, (322), 88 states have return successors, (612), 322 states have call predecessors, (612), 322 states have call successors, (612) [2021-11-06 17:23:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60345 states to 60345 states and 78219 transitions. [2021-11-06 17:23:03,714 INFO L78 Accepts]: Start accepts. Automaton has 60345 states and 78219 transitions. Word has length 60 [2021-11-06 17:23:03,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:23:03,715 INFO L470 AbstractCegarLoop]: Abstraction has 60345 states and 78219 transitions. [2021-11-06 17:23:03,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 17:23:03,715 INFO L276 IsEmpty]: Start isEmpty. Operand 60345 states and 78219 transitions. [2021-11-06 17:23:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 17:23:03,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:23:03,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:23:03,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:23:03,719 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [de4x5_openErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:23:03,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:23:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash 631590168, now seen corresponding path program 1 times [2021-11-06 17:23:03,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:23:03,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510994933] [2021-11-06 17:23:03,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:23:03,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:23:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:23:03,934 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 17:23:03,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:23:03,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510994933] [2021-11-06 17:23:03,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510994933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:23:03,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:23:03,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:23:03,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014192311] [2021-11-06 17:23:03,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:23:03,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:23:03,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:23:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:23:03,937 INFO L87 Difference]: Start difference. First operand 60345 states and 78219 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 17:23:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:23:07,639 INFO L93 Difference]: Finished difference Result 207593 states and 270694 transitions. [2021-11-06 17:23:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:23:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-06 17:23:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:23:08,790 INFO L225 Difference]: With dead ends: 207593 [2021-11-06 17:23:08,790 INFO L226 Difference]: Without dead ends: 147273 [2021-11-06 17:23:09,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:23:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147273 states.