./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--scsi--fcoe--fcoe.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--scsi--fcoe--fcoe.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 b09307eff68471b13f9f4af8ca37265160c175233f57a4afa3e4fdd6d6503a6b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:43:43,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:43:43,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:43:43,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:43:43,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:43:43,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:43:43,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:43:43,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:43:43,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:43:43,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:43:43,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:43:43,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:43:43,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:43:43,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:43:43,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:43:43,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:43:43,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:43:43,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:43:43,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:43:43,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:43:43,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:43:43,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:43:43,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:43:43,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:43:43,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:43:43,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:43:43,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:43:43,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:43:43,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:43:43,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:43:43,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:43:43,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:43:43,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:43:43,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:43:43,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:43:43,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:43:43,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:43:43,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:43:43,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:43:43,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:43:43,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:43:43,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:43:43,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:43:43,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:43:43,372 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:43:43,372 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:43:43,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:43:43,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:43:43,374 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:43:43,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:43:43,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:43:43,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:43:43,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:43:43,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:43:43,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:43:43,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:43:43,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:43:43,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:43:43,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:43:43,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:43:43,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:43:43,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:43:43,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:43:43,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:43:43,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:43:43,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:43:43,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:43:43,378 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:43:43,378 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:43:43,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:43:43,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:43:43,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b09307eff68471b13f9f4af8ca37265160c175233f57a4afa3e4fdd6d6503a6b [2021-11-06 17:43:43,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:43:43,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:43:43,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:43:43,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:43:43,598 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:43:43,599 INFO L432 ainManager$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--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-06 17:43:43,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5b7f339/69fbace5804e45adb28abd38a6579943/FLAGd6c69b5b1 [2021-11-06 17:43:44,288 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:43:44,288 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--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-06 17:43:44,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5b7f339/69fbace5804e45adb28abd38a6579943/FLAGd6c69b5b1 [2021-11-06 17:43:44,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e5b7f339/69fbace5804e45adb28abd38a6579943 [2021-11-06 17:43:44,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:43:44,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:43:44,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:43:44,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:43:44,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:43:44,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:43:44" (1/1) ... [2021-11-06 17:43:44,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594f7027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:44, skipping insertion in model container [2021-11-06 17:43:44,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:43:44" (1/1) ... [2021-11-06 17:43:44,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:43:44,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:43:46,668 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--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2021-11-06 17:43:46,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:43:46,765 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:43:47,258 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--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2021-11-06 17:43:47,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:43:47,377 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:43:47,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47 WrapperNode [2021-11-06 17:43:47,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:43:47,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:43:47,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:43:47,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:43:47,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:47,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:47,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:43:47,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:43:47,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:43:47,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:43:47,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:47,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:47,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:47,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:48,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:48,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:48,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:48,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:43:48,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:43:48,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:43:48,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:43:48,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (1/1) ... [2021-11-06 17:43:48,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:43:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:43:48,361 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 17:43:48,407 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 17:43:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2021-11-06 17:43:48,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2021-11-06 17:43:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 17:43:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2021-11-06 17:43:48,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2021-11-06 17:43:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2021-11-06 17:43:48,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2021-11-06 17:43:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:43:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2021-11-06 17:43:48,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2021-11-06 17:43:48,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:43:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2021-11-06 17:43:48,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2021-11-06 17:43:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:43:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2021-11-06 17:43:48,436 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2021-11-06 17:43:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:43:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2021-11-06 17:43:48,436 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2021-11-06 17:43:48,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:43:48,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:43:48,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:43:48,437 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-06 17:43:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2021-11-06 17:43:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2021-11-06 17:43:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:43:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:43:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-11-06 17:43:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-11-06 17:43:48,438 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2021-11-06 17:43:48,438 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2021-11-06 17:43:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:43:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-06 17:43:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-11-06 17:43:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_46 [2021-11-06 17:43:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_46 [2021-11-06 17:43:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2021-11-06 17:43:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2021-11-06 17:43:48,439 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2021-11-06 17:43:48,439 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2021-11-06 17:43:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2021-11-06 17:43:48,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2021-11-06 17:43:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:43:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2021-11-06 17:43:48,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2021-11-06 17:43:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-11-06 17:43:48,441 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-11-06 17:43:48,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:44:05,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:44:05,215 INFO L299 CfgBuilder]: Removed 3124 assume(true) statements. [2021-11-06 17:44:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:44:05 BoogieIcfgContainer [2021-11-06 17:44:05,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:44:05,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:44:05,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:44:05,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:44:05,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:43:44" (1/3) ... [2021-11-06 17:44:05,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604a8781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:44:05, skipping insertion in model container [2021-11-06 17:44:05,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:43:47" (2/3) ... [2021-11-06 17:44:05,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604a8781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:44:05, skipping insertion in model container [2021-11-06 17:44:05,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:44:05" (3/3) ... [2021-11-06 17:44:05,226 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2021-11-06 17:44:05,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:44:05,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 17:44:05,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:44:05,287 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 17:44:05,287 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 17:44:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 3849 states, 3786 states have (on average 1.50581088219757) internal successors, (5701), 3795 states have internal predecessors, (5701), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-06 17:44:05,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 17:44:05,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:44:05,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:05,344 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:44:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:44:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1983063024, now seen corresponding path program 1 times [2021-11-06 17:44:05,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:44:05,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106228026] [2021-11-06 17:44:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:44:05,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:44:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:05,813 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 17:44:05,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:44:05,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106228026] [2021-11-06 17:44:05,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106228026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:44:05,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:44:05,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:44:05,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128240815] [2021-11-06 17:44:05,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:44:05,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:44:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:44:05,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:44:05,842 INFO L87 Difference]: Start difference. First operand has 3849 states, 3786 states have (on average 1.50581088219757) internal successors, (5701), 3795 states have internal predecessors, (5701), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:44:06,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:44:06,051 INFO L93 Difference]: Finished difference Result 7694 states and 11593 transitions. [2021-11-06 17:44:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:44:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-06 17:44:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:44:06,079 INFO L225 Difference]: With dead ends: 7694 [2021-11-06 17:44:06,079 INFO L226 Difference]: Without dead ends: 3826 [2021-11-06 17:44:06,095 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 17:44:06,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-11-06 17:44:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3826. [2021-11-06 17:44:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3764 states have (on average 1.4729011689691818) internal successors, (5544), 3773 states have internal predecessors, (5544), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 17:44:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5625 transitions. [2021-11-06 17:44:06,245 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5625 transitions. Word has length 157 [2021-11-06 17:44:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:44:06,246 INFO L470 AbstractCegarLoop]: Abstraction has 3826 states and 5625 transitions. [2021-11-06 17:44:06,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:44:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5625 transitions. [2021-11-06 17:44:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 17:44:06,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:44:06,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:06,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:44:06,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:44:06,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:44:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1351519202, now seen corresponding path program 1 times [2021-11-06 17:44:06,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:44:06,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393506098] [2021-11-06 17:44:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:44:06,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:44:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:06,576 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 17:44:06,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:44:06,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393506098] [2021-11-06 17:44:06,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393506098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:44:06,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:44:06,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:44:06,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027174108] [2021-11-06 17:44:06,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:44:06,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:44:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:44:06,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:44:06,585 INFO L87 Difference]: Start difference. First operand 3826 states and 5625 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:44:06,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:44:06,789 INFO L93 Difference]: Finished difference Result 10574 states and 15662 transitions. [2021-11-06 17:44:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:44:06,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-06 17:44:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:44:06,813 INFO L225 Difference]: With dead ends: 10574 [2021-11-06 17:44:06,814 INFO L226 Difference]: Without dead ends: 6854 [2021-11-06 17:44:06,823 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 17:44:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2021-11-06 17:44:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6814. [2021-11-06 17:44:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6814 states, 6694 states have (on average 1.488347774126083) internal successors, (9963), 6710 states have internal predecessors, (9963), 81 states have call successors, (81), 36 states have call predecessors, (81), 36 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2021-11-06 17:44:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 10123 transitions. [2021-11-06 17:44:06,960 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 10123 transitions. Word has length 157 [2021-11-06 17:44:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:44:06,960 INFO L470 AbstractCegarLoop]: Abstraction has 6814 states and 10123 transitions. [2021-11-06 17:44:06,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:44:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 10123 transitions. [2021-11-06 17:44:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-06 17:44:06,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:44:06,966 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:06,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:44:06,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:44:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:44:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash 324053523, now seen corresponding path program 1 times [2021-11-06 17:44:06,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:44:06,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791026534] [2021-11-06 17:44:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:44:06,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:44:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-06 17:44:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:07,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 17:44:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:44:07,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:44:07,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791026534] [2021-11-06 17:44:07,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791026534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:44:07,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128811557] [2021-11-06 17:44:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:44:07,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:44:07,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:44:07,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:44:07,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:44:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 4936 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 17:44:08,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:44:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:44:09,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128811557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:44:09,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 17:44:09,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-11-06 17:44:09,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425644656] [2021-11-06 17:44:09,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:44:09,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:44:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:44:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:44:09,295 INFO L87 Difference]: Start difference. First operand 6814 states and 10123 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:44:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:44:13,815 INFO L93 Difference]: Finished difference Result 16712 states and 24907 transitions. [2021-11-06 17:44:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:44:13,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 189 [2021-11-06 17:44:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:44:13,858 INFO L225 Difference]: With dead ends: 16712 [2021-11-06 17:44:13,858 INFO L226 Difference]: Without dead ends: 10004 [2021-11-06 17:44:13,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-06 17:44:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2021-11-06 17:44:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 10000. [2021-11-06 17:44:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10000 states, 9812 states have (on average 1.489094985731757) internal successors, (14611), 9838 states have internal predecessors, (14611), 123 states have call successors, (123), 62 states have call predecessors, (123), 62 states have return successors, (121), 121 states have call predecessors, (121), 121 states have call successors, (121) [2021-11-06 17:44:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 14855 transitions. [2021-11-06 17:44:14,091 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 14855 transitions. Word has length 189 [2021-11-06 17:44:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:44:14,091 INFO L470 AbstractCegarLoop]: Abstraction has 10000 states and 14855 transitions. [2021-11-06 17:44:14,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-06 17:44:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 14855 transitions. [2021-11-06 17:44:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-06 17:44:14,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:44:14,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:14,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 17:44:14,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:44:14,312 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:44:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:44:14,312 INFO L85 PathProgramCache]: Analyzing trace with hash 472900210, now seen corresponding path program 1 times [2021-11-06 17:44:14,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:44:14,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923284237] [2021-11-06 17:44:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:44:14,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:44:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:14,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-06 17:44:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 17:44:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:14,828 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 17:44:14,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:44:14,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923284237] [2021-11-06 17:44:14,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923284237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:44:14,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:44:14,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:44:14,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416174181] [2021-11-06 17:44:14,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:44:14,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:44:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:44:14,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:44:14,831 INFO L87 Difference]: Start difference. First operand 10000 states and 14855 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 17:44:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:44:41,248 INFO L93 Difference]: Finished difference Result 38767 states and 58238 transitions. [2021-11-06 17:44:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:44:41,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 175 [2021-11-06 17:44:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:44:41,386 INFO L225 Difference]: With dead ends: 38767 [2021-11-06 17:44:41,386 INFO L226 Difference]: Without dead ends: 28873 [2021-11-06 17:44:41,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:44:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28873 states. [2021-11-06 17:44:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28873 to 27507. [2021-11-06 17:44:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27507 states, 26982 states have (on average 1.4845081906456157) internal successors, (40055), 27032 states have internal predecessors, (40055), 294 states have call successors, (294), 124 states have call predecessors, (294), 228 states have return successors, (703), 418 states have call predecessors, (703), 290 states have call successors, (703) [2021-11-06 17:44:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27507 states to 27507 states and 41052 transitions. [2021-11-06 17:44:42,355 INFO L78 Accepts]: Start accepts. Automaton has 27507 states and 41052 transitions. Word has length 175 [2021-11-06 17:44:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:44:42,356 INFO L470 AbstractCegarLoop]: Abstraction has 27507 states and 41052 transitions. [2021-11-06 17:44:42,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 5 states have internal predecessors, (169), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 17:44:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27507 states and 41052 transitions. [2021-11-06 17:44:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-06 17:44:42,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:44:42,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:42,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:44:42,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:44:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:44:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1671227572, now seen corresponding path program 1 times [2021-11-06 17:44:42,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:44:42,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251453972] [2021-11-06 17:44:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:44:42,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:44:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-06 17:44:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:42,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 17:44:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:44:42,764 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 17:44:42,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:44:42,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251453972] [2021-11-06 17:44:42,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251453972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:44:42,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:44:42,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:44:42,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796895138] [2021-11-06 17:44:42,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:44:42,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:44:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:44:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:44:42,767 INFO L87 Difference]: Start difference. First operand 27507 states and 41052 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 17:45:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:45:11,655 INFO L93 Difference]: Finished difference Result 115443 states and 176877 transitions. [2021-11-06 17:45:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:45:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 176 [2021-11-06 17:45:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:45:11,947 INFO L225 Difference]: With dead ends: 115443 [2021-11-06 17:45:11,947 INFO L226 Difference]: Without dead ends: 88042 [2021-11-06 17:45:12,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:45:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88042 states. [2021-11-06 17:45:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88042 to 85328. [2021-11-06 17:45:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85328 states, 83681 states have (on average 1.4794397772493157) internal successors, (123801), 83763 states have internal predecessors, (123801), 772 states have call successors, (772), 248 states have call predecessors, (772), 872 states have return successors, (4751), 1540 states have call predecessors, (4751), 764 states have call successors, (4751) [2021-11-06 17:45:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85328 states to 85328 states and 129324 transitions. [2021-11-06 17:45:14,580 INFO L78 Accepts]: Start accepts. Automaton has 85328 states and 129324 transitions. Word has length 176 [2021-11-06 17:45:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:45:14,581 INFO L470 AbstractCegarLoop]: Abstraction has 85328 states and 129324 transitions. [2021-11-06 17:45:14,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 17:45:14,581 INFO L276 IsEmpty]: Start isEmpty. Operand 85328 states and 129324 transitions. [2021-11-06 17:45:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-06 17:45:14,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:45:14,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:14,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:45:14,587 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:45:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:45:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash -693394803, now seen corresponding path program 1 times [2021-11-06 17:45:14,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:45:14,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265739138] [2021-11-06 17:45:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:45:14,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:45:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:45:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-06 17:45:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:45:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 17:45:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:45:14,960 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 17:45:14,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:45:14,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265739138] [2021-11-06 17:45:14,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265739138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:45:14,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:45:14,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:45:14,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285763317] [2021-11-06 17:45:14,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:45:14,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:45:14,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:45:14,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:45:14,966 INFO L87 Difference]: Start difference. First operand 85328 states and 129324 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 5 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 17:45:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:45:29,861 INFO L93 Difference]: Finished difference Result 382767 states and 615655 transitions. [2021-11-06 17:45:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 17:45:29,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 5 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 177 [2021-11-06 17:45:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:45:31,274 INFO L225 Difference]: With dead ends: 382767 [2021-11-06 17:45:31,274 INFO L226 Difference]: Without dead ends: 297545 [2021-11-06 17:45:31,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-06 17:45:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297545 states. [2021-11-06 17:45:38,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297545 to 292135. [2021-11-06 17:45:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292135 states, 286460 states have (on average 1.4754974516511903) internal successors, (422671), 286526 states have internal predecessors, (422671), 2264 states have call successors, (2264), 496 states have call predecessors, (2264), 3408 states have return successors, (35963), 5896 states have call predecessors, (35963), 2248 states have call successors, (35963) [2021-11-06 17:45:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292135 states to 292135 states and 460898 transitions. [2021-11-06 17:45:41,264 INFO L78 Accepts]: Start accepts. Automaton has 292135 states and 460898 transitions. Word has length 177 [2021-11-06 17:45:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:45:41,265 INFO L470 AbstractCegarLoop]: Abstraction has 292135 states and 460898 transitions. [2021-11-06 17:45:41,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 5 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-06 17:45:41,266 INFO L276 IsEmpty]: Start isEmpty. Operand 292135 states and 460898 transitions. [2021-11-06 17:45:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 17:45:41,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:45:41,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:45:41,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:45:41,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 17:45:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:45:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1719032761, now seen corresponding path program 1 times [2021-11-06 17:45:41,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:45:41,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495773072] [2021-11-06 17:45:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:45:41,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:45:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:45:41,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-06 17:45:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:45:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 17:45:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:45:41,677 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 17:45:41,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:45:41,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495773072] [2021-11-06 17:45:41,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495773072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:45:41,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:45:41,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:45:41,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002153067] [2021-11-06 17:45:41,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:45:41,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:45:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:45:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:45:41,680 INFO L87 Difference]: Start difference. First operand 292135 states and 460898 transitions. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 5 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)