./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.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 73f101526b33e5f10b251e7a447b1a9d4ad6e1a0a49c040c0e548967272c8fbb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:46:32,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:46:32,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:46:32,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:46:32,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:46:32,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:46:32,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:46:32,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:46:32,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:46:32,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:46:32,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:46:32,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:46:32,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:46:32,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:46:32,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:46:32,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:46:32,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:46:32,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:46:32,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:46:32,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:46:32,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:46:32,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:46:32,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:46:32,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:46:32,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:46:32,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:46:32,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:46:32,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:46:32,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:46:32,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:46:32,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:46:32,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:46:32,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:46:32,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:46:32,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:46:32,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:46:32,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:46:32,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:46:32,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:46:32,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:46:32,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:46:32,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:46:32,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:46:32,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:46:32,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:46:32,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:46:32,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:46:32,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:46:32,689 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:46:32,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:46:32,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:46:32,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:46:32,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:46:32,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:46:32,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:46:32,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:46:32,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:46:32,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:46:32,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:46:32,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:46:32,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:46:32,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:46:32,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:46:32,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:46:32,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:46:32,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:46:32,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:46:32,693 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:46:32,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:46:32,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:46:32,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:46:32,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73f101526b33e5f10b251e7a447b1a9d4ad6e1a0a49c040c0e548967272c8fbb [2021-11-06 19:46:32,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:46:32,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:46:32,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:46:32,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:46:32,841 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:46:32,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i [2021-11-06 19:46:32,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac2508d3/387810fece6a402d9562d4da3cb07d24/FLAG1ed650b3d [2021-11-06 19:46:33,566 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:46:33,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i [2021-11-06 19:46:33,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac2508d3/387810fece6a402d9562d4da3cb07d24/FLAG1ed650b3d [2021-11-06 19:46:33,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac2508d3/387810fece6a402d9562d4da3cb07d24 [2021-11-06 19:46:33,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:46:33,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:46:33,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:46:33,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:46:33,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:46:33,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:46:33" (1/1) ... [2021-11-06 19:46:33,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244b1896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:33, skipping insertion in model container [2021-11-06 19:46:33,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:46:33" (1/1) ... [2021-11-06 19:46:33,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:46:33,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:46:38,133 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564438,564451] [2021-11-06 19:46:38,136 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564607,564620] [2021-11-06 19:46:38,137 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564774,564787] [2021-11-06 19:46:38,137 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564942,564955] [2021-11-06 19:46:38,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:46:38,220 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:46:38,684 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564438,564451] [2021-11-06 19:46:38,684 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564607,564620] [2021-11-06 19:46:38,685 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564774,564787] [2021-11-06 19:46:38,685 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-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i[564942,564955] [2021-11-06 19:46:38,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:46:38,942 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:46:38,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38 WrapperNode [2021-11-06 19:46:38,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:46:38,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:46:38,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:46:38,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:46:38,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:39,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:41,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:46:41,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:46:41,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:46:41,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:46:41,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:41,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:42,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:42,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:44,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:44,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:44,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:45,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:46:45,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:46:45,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:46:45,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:46:45,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (1/1) ... [2021-11-06 19:46:45,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:46:45,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:46:45,461 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 19:46:45,504 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 19:46:45,529 INFO L130 BoogieDeclarations]: Found specification of procedure enic_notify_timer [2021-11-06 19:46:45,529 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_notify_timer [2021-11-06 19:46:45,529 INFO L130 BoogieDeclarations]: Found specification of procedure enic_dev_open [2021-11-06 19:46:45,529 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_dev_open [2021-11-06 19:46:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 19:46:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure enic_probe [2021-11-06 19:46:45,530 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_probe [2021-11-06 19:46:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure enic_pp_preassociate_rr [2021-11-06 19:46:45,530 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_pp_preassociate_rr [2021-11-06 19:46:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:46:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-06 19:46:45,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~$Pointer$~TO~int [2021-11-06 19:46:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:46:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_4_2 [2021-11-06 19:46:45,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_4_2 [2021-11-06 19:46:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-06 19:46:45,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-06 19:46:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:46:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 19:46:45,531 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-06 19:46:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-06 19:46:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:46:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:46:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure vnic_rq_fill [2021-11-06 19:46:45,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vnic_rq_fill [2021-11-06 19:46:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:46:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 19:46:45,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:46:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:46:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:46:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_4 [2021-11-06 19:46:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_4 [2021-11-06 19:46:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:46:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:46:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:46:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_86 [2021-11-06 19:46:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_86 [2021-11-06 19:46:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_9_2 [2021-11-06 19:46:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_9_2 [2021-11-06 19:46:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 19:46:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 19:46:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure enic_dev_wait [2021-11-06 19:46:45,535 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_dev_wait [2021-11-06 19:46:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:46:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:46:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure enic_open [2021-11-06 19:46:45,535 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_open [2021-11-06 19:46:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure enic_pp_associate [2021-11-06 19:46:45,536 INFO L138 BoogieDeclarations]: Found implementation of procedure enic_pp_associate [2021-11-06 19:46:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 19:46:45,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 19:46:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:00:24,134 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_3_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_3_~#ldv_3_resource_pm_message~0.base, ldv_pci_pci_instance_3_~#ldv_3_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_3_~#ldv_3_resource_pm_message~0.base, ldv_pci_pci_instance_3_~#ldv_3_resource_pm_message~0.offset; [2021-11-06 20:00:24,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:00:24,144 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L13137: #t~ret2597 := main_#res; [2021-11-06 20:00:24,145 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_16_returnLabel: main_#res := 0; [2021-11-06 20:00:28,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:00:28,408 INFO L299 CfgBuilder]: Removed 22088 assume(true) statements. [2021-11-06 20:00:28,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:28 BoogieIcfgContainer [2021-11-06 20:00:28,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:00:28,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:00:28,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:00:28,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:00:28,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:46:33" (1/3) ... [2021-11-06 20:00:28,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e903e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:28, skipping insertion in model container [2021-11-06 20:00:28,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:38" (2/3) ... [2021-11-06 20:00:28,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e903e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:00:28, skipping insertion in model container [2021-11-06 20:00:28,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:00:28" (3/3) ... [2021-11-06 20:00:28,435 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-cisco-enic-enic.cil.i [2021-11-06 20:00:28,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:00:28,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 239 error locations. [2021-11-06 20:00:28,545 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:00:28,550 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:00:28,550 INFO L340 AbstractCegarLoop]: Starting to check reachability of 239 error locations. [2021-11-06 20:00:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 28820 states, 28530 states have (on average 1.4478093235191027) internal successors, (41306), 28768 states have internal predecessors, (41306), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-06 20:00:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 20:00:28,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:28,854 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] [2021-11-06 20:00:28,854 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1831395833, now seen corresponding path program 1 times [2021-11-06 20:00:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:28,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439574289] [2021-11-06 20:00:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:28,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:00:30,024 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 20:00:30,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:00:30,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439574289] [2021-11-06 20:00:30,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439574289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:00:30,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:00:30,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:00:30,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186587785] [2021-11-06 20:00:30,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:00:30,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:00:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:00:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:00:30,086 INFO L87 Difference]: Start difference. First operand has 28820 states, 28530 states have (on average 1.4478093235191027) internal successors, (41306), 28768 states have internal predecessors, (41306), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 20:00:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:00:31,573 INFO L93 Difference]: Finished difference Result 57442 states and 82466 transitions. [2021-11-06 20:00:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:00:31,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-06 20:00:31,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:00:31,725 INFO L225 Difference]: With dead ends: 57442 [2021-11-06 20:00:31,725 INFO L226 Difference]: Without dead ends: 28357 [2021-11-06 20:00:31,834 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 20:00:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28357 states. [2021-11-06 20:00:32,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28357 to 28357. [2021-11-06 20:00:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28357 states, 28069 states have (on average 1.4264847340482383) internal successors, (40040), 28305 states have internal predecessors, (40040), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-06 20:00:32,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28357 states to 28357 states and 40108 transitions. [2021-11-06 20:00:32,684 INFO L78 Accepts]: Start accepts. Automaton has 28357 states and 40108 transitions. Word has length 22 [2021-11-06 20:00:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:00:32,685 INFO L470 AbstractCegarLoop]: Abstraction has 28357 states and 40108 transitions. [2021-11-06 20:00:32,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 20:00:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 28357 states and 40108 transitions. [2021-11-06 20:00:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 20:00:32,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:32,689 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] [2021-11-06 20:00:32,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:00:32,690 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -961986052, now seen corresponding path program 1 times [2021-11-06 20:00:32,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:32,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300664082] [2021-11-06 20:00:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:32,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:00:33,307 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 20:00:33,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:00:33,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300664082] [2021-11-06 20:00:33,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300664082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:00:33,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:00:33,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:00:33,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626430578] [2021-11-06 20:00:33,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:00:33,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:00:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:00:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:00:33,309 INFO L87 Difference]: Start difference. First operand 28357 states and 40108 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 20:00:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:00:34,417 INFO L93 Difference]: Finished difference Result 28357 states and 40108 transitions. [2021-11-06 20:00:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:00:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-06 20:00:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:00:34,480 INFO L225 Difference]: With dead ends: 28357 [2021-11-06 20:00:34,480 INFO L226 Difference]: Without dead ends: 28353 [2021-11-06 20:00:34,491 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 20:00:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28353 states. [2021-11-06 20:00:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28353 to 28353. [2021-11-06 20:00:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28353 states, 28067 states have (on average 1.4264438664623935) internal successors, (40036), 28301 states have internal predecessors, (40036), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-06 20:00:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28353 states to 28353 states and 40104 transitions. [2021-11-06 20:00:35,229 INFO L78 Accepts]: Start accepts. Automaton has 28353 states and 40104 transitions. Word has length 24 [2021-11-06 20:00:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:00:35,230 INFO L470 AbstractCegarLoop]: Abstraction has 28353 states and 40104 transitions. [2021-11-06 20:00:35,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 20:00:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 28353 states and 40104 transitions. [2021-11-06 20:00:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 20:00:35,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:35,231 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] [2021-11-06 20:00:35,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:00:35,232 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1047417217, now seen corresponding path program 1 times [2021-11-06 20:00:35,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:35,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105914261] [2021-11-06 20:00:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:35,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:00:35,758 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 20:00:35,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:00:35,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105914261] [2021-11-06 20:00:35,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105914261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:00:35,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:00:35,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:00:35,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803815579] [2021-11-06 20:00:35,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:00:35,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:00:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:00:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:00:35,760 INFO L87 Difference]: Start difference. First operand 28353 states and 40104 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 20:00:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:00:36,714 INFO L93 Difference]: Finished difference Result 28353 states and 40104 transitions. [2021-11-06 20:00:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:00:36,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-06 20:00:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:00:36,777 INFO L225 Difference]: With dead ends: 28353 [2021-11-06 20:00:36,778 INFO L226 Difference]: Without dead ends: 28349 [2021-11-06 20:00:36,788 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 20:00:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28349 states. [2021-11-06 20:00:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28349 to 28349. [2021-11-06 20:00:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28349 states, 28065 states have (on average 1.426402993051844) internal successors, (40032), 28297 states have internal predecessors, (40032), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-06 20:00:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28349 states to 28349 states and 40100 transitions. [2021-11-06 20:00:37,577 INFO L78 Accepts]: Start accepts. Automaton has 28349 states and 40100 transitions. Word has length 26 [2021-11-06 20:00:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:00:37,577 INFO L470 AbstractCegarLoop]: Abstraction has 28349 states and 40100 transitions. [2021-11-06 20:00:37,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 20:00:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 28349 states and 40100 transitions. [2021-11-06 20:00:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 20:00:37,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:37,579 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] [2021-11-06 20:00:37,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:00:37,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr65ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1542387838, now seen corresponding path program 1 times [2021-11-06 20:00:37,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:37,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630870350] [2021-11-06 20:00:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:37,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:00:38,071 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 20:00:38,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:00:38,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630870350] [2021-11-06 20:00:38,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630870350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:00:38,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:00:38,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:00:38,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794758252] [2021-11-06 20:00:38,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:00:38,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:00:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:00:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:00:38,072 INFO L87 Difference]: Start difference. First operand 28349 states and 40100 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 20:00:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:00:39,015 INFO L93 Difference]: Finished difference Result 28349 states and 40100 transitions. [2021-11-06 20:00:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:00:39,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-11-06 20:00:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:00:39,078 INFO L225 Difference]: With dead ends: 28349 [2021-11-06 20:00:39,078 INFO L226 Difference]: Without dead ends: 28345 [2021-11-06 20:00:39,087 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 20:00:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28345 states. [2021-11-06 20:00:39,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28345 to 28345. [2021-11-06 20:00:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28345 states, 28063 states have (on average 1.426362113815344) internal successors, (40028), 28293 states have internal predecessors, (40028), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-06 20:00:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28345 states to 28345 states and 40096 transitions. [2021-11-06 20:00:39,815 INFO L78 Accepts]: Start accepts. Automaton has 28345 states and 40096 transitions. Word has length 28 [2021-11-06 20:00:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:00:39,816 INFO L470 AbstractCegarLoop]: Abstraction has 28345 states and 40096 transitions. [2021-11-06 20:00:39,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 20:00:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 28345 states and 40096 transitions. [2021-11-06 20:00:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 20:00:39,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:39,820 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] [2021-11-06 20:00:39,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:00:39,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:39,823 INFO L85 PathProgramCache]: Analyzing trace with hash -467784443, now seen corresponding path program 1 times [2021-11-06 20:00:39,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:39,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991761108] [2021-11-06 20:00:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:39,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:00:40,313 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 20:00:40,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:00:40,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991761108] [2021-11-06 20:00:40,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991761108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:00:40,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:00:40,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:00:40,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122821076] [2021-11-06 20:00:40,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:00:40,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:00:40,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:00:40,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:00:40,315 INFO L87 Difference]: Start difference. First operand 28345 states and 40096 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 20:00:42,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:00:42,973 INFO L93 Difference]: Finished difference Result 28345 states and 40096 transitions. [2021-11-06 20:00:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:00:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-06 20:00:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:00:43,079 INFO L225 Difference]: With dead ends: 28345 [2021-11-06 20:00:43,079 INFO L226 Difference]: Without dead ends: 28341 [2021-11-06 20:00:43,089 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 20:00:43,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28341 states. [2021-11-06 20:00:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28341 to 28341. [2021-11-06 20:00:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28341 states, 28061 states have (on average 1.4263212287516482) internal successors, (40024), 28289 states have internal predecessors, (40024), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-06 20:00:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28341 states to 28341 states and 40092 transitions. [2021-11-06 20:00:43,864 INFO L78 Accepts]: Start accepts. Automaton has 28341 states and 40092 transitions. Word has length 30 [2021-11-06 20:00:43,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:00:43,865 INFO L470 AbstractCegarLoop]: Abstraction has 28341 states and 40092 transitions. [2021-11-06 20:00:43,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 20:00:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 28341 states and 40092 transitions. [2021-11-06 20:00:43,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 20:00:43,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:43,869 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] [2021-11-06 20:00:43,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:00:43,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1433927432, now seen corresponding path program 1 times [2021-11-06 20:00:43,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:43,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374040312] [2021-11-06 20:00:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:43,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:00:44,343 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 20:00:44,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:00:44,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374040312] [2021-11-06 20:00:44,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374040312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:00:44,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:00:44,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:00:44,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837949512] [2021-11-06 20:00:44,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 20:00:44,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:00:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 20:00:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 20:00:44,346 INFO L87 Difference]: Start difference. First operand 28341 states and 40092 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 20:00:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:00:45,693 INFO L93 Difference]: Finished difference Result 49110 states and 69637 transitions. [2021-11-06 20:00:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 20:00:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-06 20:00:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:00:45,812 INFO L225 Difference]: With dead ends: 49110 [2021-11-06 20:00:45,812 INFO L226 Difference]: Without dead ends: 49106 [2021-11-06 20:00:45,834 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 20:00:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49106 states. [2021-11-06 20:00:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49106 to 48820. [2021-11-06 20:00:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48820 states, 48498 states have (on average 1.4303270237947956) internal successors, (69368), 48724 states have internal predecessors, (69368), 61 states have call successors, (61), 34 states have call predecessors, (61), 34 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-06 20:00:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48820 states to 48820 states and 69490 transitions. [2021-11-06 20:00:47,265 INFO L78 Accepts]: Start accepts. Automaton has 48820 states and 69490 transitions. Word has length 32 [2021-11-06 20:00:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:00:47,265 INFO L470 AbstractCegarLoop]: Abstraction has 48820 states and 69490 transitions. [2021-11-06 20:00:47,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 20:00:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 48820 states and 69490 transitions. [2021-11-06 20:00:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 20:00:47,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:00:47,267 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] [2021-11-06 20:00:47,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:00:47,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [enic_openErr0ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr1ASSERT_VIOLATIONERROR_FUNCTION, enic_openErr2ASSERT_VIOLATIONERROR_FUNCTION (and 236 more)] === [2021-11-06 20:00:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:00:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash -677028469, now seen corresponding path program 1 times [2021-11-06 20:00:47,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:00:47,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269413121] [2021-11-06 20:00:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:00:47,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:00:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15