./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-32_7a-drivers--misc--vmw_vmci--vmw_vmci.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-32_7a-drivers--misc--vmw_vmci--vmw_vmci.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 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:36:39,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:36:39,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:36:39,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:36:39,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:36:39,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:36:39,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:36:39,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:36:39,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:36:39,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:36:39,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:36:39,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:36:39,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:36:39,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:36:39,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:36:39,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:36:39,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:36:39,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:36:39,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:36:39,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:36:39,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:36:39,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:36:39,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:36:39,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:36:39,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:36:39,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:36:39,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:36:39,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:36:39,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:36:39,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:36:39,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:36:39,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:36:39,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:36:39,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:36:39,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:36:39,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:36:39,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:36:39,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:36:39,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:36:39,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:36:39,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:36:39,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:36:39,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:36:39,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:36:39,392 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:36:39,392 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:36:39,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:36:39,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:36:39,393 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:36:39,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:36:39,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:36:39,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:36:39,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:36:39,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:36:39,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:36:39,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:36:39,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:36:39,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:36:39,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:36:39,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:36:39,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:36:39,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:36:39,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:36:39,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:36:39,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:36:39,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:36:39,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:36:39,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:36:39,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:36:39,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:36:39,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:36:39,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-11-06 16:36:39,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:36:39,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:36:39,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:36:39,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:36:39,633 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:36:39,635 INFO L432 ainManager$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-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-06 16:36:39,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0a6e67a/195a3293b3104c95a6a4bbd3fb519b5a/FLAGc93dffbf3 [2021-11-06 16:36:40,403 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:36:40,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-06 16:36:40,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0a6e67a/195a3293b3104c95a6a4bbd3fb519b5a/FLAGc93dffbf3 [2021-11-06 16:36:40,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0a6e67a/195a3293b3104c95a6a4bbd3fb519b5a [2021-11-06 16:36:40,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:36:40,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:36:40,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:36:40,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:36:40,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:36:40,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:36:40" (1/1) ... [2021-11-06 16:36:40,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e49b57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:40, skipping insertion in model container [2021-11-06 16:36:40,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:36:40" (1/1) ... [2021-11-06 16:36:40,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:36:40,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:36:43,907 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-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-06 16:36:44,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:36:44,232 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:36:44,599 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-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-06 16:36:44,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:36:44,794 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:36:44,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44 WrapperNode [2021-11-06 16:36:44,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:36:44,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:36:44,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:36:44,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:36:44,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:44,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:46,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:36:46,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:36:46,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:36:46,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:36:46,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:46,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:46,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:46,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:47,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:47,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:47,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:47,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:36:47,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:36:47,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:36:47,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:36:47,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (1/1) ... [2021-11-06 16:36:47,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:36:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:36:47,726 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 16:36:47,742 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 16:36:47,750 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-06 16:36:47,755 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-06 16:36:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-06 16:36:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-06 16:36:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-06 16:36:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-06 16:36:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-06 16:36:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-06 16:36:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 16:36:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-06 16:36:47,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-06 16:36:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:36:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-06 16:36:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-06 16:36:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:36:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-06 16:36:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-06 16:36:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:36:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:36:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-06 16:36:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-06 16:36:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-06 16:36:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-06 16:36:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-06 16:36:47,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-06 16:36:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:36:47,758 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-06 16:36:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-06 16:36:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:36:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 16:36:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-06 16:36:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-06 16:36:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:36:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:36:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:36:47,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 16:36:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-06 16:36:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-06 16:36:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:36:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:36:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-06 16:36:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-06 16:36:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:36:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:36:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-06 16:36:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-06 16:36:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-06 16:36:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-06 16:36:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-06 16:36:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-06 16:36:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:36:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:36:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-06 16:36:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-06 16:36:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-06 16:36:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-06 16:36:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:36:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-06 16:36:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-06 16:36:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-06 16:36:47,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-06 16:36:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-06 16:36:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-06 16:36:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:36:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-06 16:36:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-06 16:36:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-06 16:36:47,763 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-06 16:36:47,763 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-06 16:36:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-06 16:36:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-06 16:36:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-06 16:36:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 16:36:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 16:36:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:36:47,764 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-06 16:36:47,764 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-06 16:37:49,868 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:37:49,883 INFO L299 CfgBuilder]: Removed 8979 assume(true) statements. [2021-11-06 16:37:49,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:37:49 BoogieIcfgContainer [2021-11-06 16:37:49,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:37:49,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:37:49,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:37:49,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:37:49,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:36:40" (1/3) ... [2021-11-06 16:37:49,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddb9e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:37:49, skipping insertion in model container [2021-11-06 16:37:49,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:36:44" (2/3) ... [2021-11-06 16:37:49,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ddb9e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:37:49, skipping insertion in model container [2021-11-06 16:37:49,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:37:49" (3/3) ... [2021-11-06 16:37:49,902 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-11-06 16:37:49,907 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:37:49,908 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-06 16:37:49,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:37:49,973 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 16:37:49,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-06 16:37:50,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 10724 states, 10522 states have (on average 1.5072229614141799) internal successors, (15859), 10595 states have internal predecessors, (15859), 104 states have call successors, (104), 30 states have call predecessors, (104), 30 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 16:37:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 16:37:50,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:50,119 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 16:37:50,120 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:37:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1959735566, now seen corresponding path program 1 times [2021-11-06 16:37:50,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:50,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605129838] [2021-11-06 16:37:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:50,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:50,828 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 16:37:50,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:50,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605129838] [2021-11-06 16:37:50,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605129838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:37:50,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:37:50,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:37:50,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979566342] [2021-11-06 16:37:50,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:37:50,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:37:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:37:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:37:50,863 INFO L87 Difference]: Start difference. First operand has 10724 states, 10522 states have (on average 1.5072229614141799) internal successors, (15859), 10595 states have internal predecessors, (15859), 104 states have call successors, (104), 30 states have call predecessors, (104), 30 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 3 states, 3 states have (on average 8.0) 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 16:37:53,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:37:53,633 INFO L93 Difference]: Finished difference Result 31874 states and 47995 transitions. [2021-11-06 16:37:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:37:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) 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 16:37:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:37:53,732 INFO L225 Difference]: With dead ends: 31874 [2021-11-06 16:37:53,732 INFO L226 Difference]: Without dead ends: 21144 [2021-11-06 16:37:53,771 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 16:37:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21144 states. [2021-11-06 16:37:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21144 to 21028. [2021-11-06 16:37:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21028 states, 20695 states have (on average 1.4880405895143753) internal successors, (30795), 20773 states have internal predecessors, (30795), 206 states have call successors, (206), 60 states have call predecessors, (206), 60 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 16:37:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 31207 transitions. [2021-11-06 16:37:54,251 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 31207 transitions. Word has length 24 [2021-11-06 16:37:54,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:37:54,252 INFO L470 AbstractCegarLoop]: Abstraction has 21028 states and 31207 transitions. [2021-11-06 16:37:54,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) 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 16:37:54,253 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 31207 transitions. [2021-11-06 16:37:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 16:37:54,254 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:54,255 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] [2021-11-06 16:37:54,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:37:54,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:37:54,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:54,258 INFO L85 PathProgramCache]: Analyzing trace with hash 801400433, now seen corresponding path program 1 times [2021-11-06 16:37:54,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:54,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162469147] [2021-11-06 16:37:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:54,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:54,827 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 16:37:54,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:54,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162469147] [2021-11-06 16:37:54,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162469147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:37:54,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:37:54,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:37:54,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795459793] [2021-11-06 16:37:54,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:37:54,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:37:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:37:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:37:54,830 INFO L87 Difference]: Start difference. First operand 21028 states and 31207 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 16:37:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:37:55,166 INFO L93 Difference]: Finished difference Result 42053 states and 62412 transitions. [2021-11-06 16:37:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:37:55,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-06 16:37:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:37:55,236 INFO L225 Difference]: With dead ends: 42053 [2021-11-06 16:37:55,236 INFO L226 Difference]: Without dead ends: 21031 [2021-11-06 16:37:55,273 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 16:37:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2021-11-06 16:37:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 21029. [2021-11-06 16:37:55,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21029 states, 20696 states have (on average 1.4880170081175106) internal successors, (30796), 20774 states have internal predecessors, (30796), 206 states have call successors, (206), 60 states have call predecessors, (206), 60 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-06 16:37:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21029 states to 21029 states and 31208 transitions. [2021-11-06 16:37:55,685 INFO L78 Accepts]: Start accepts. Automaton has 21029 states and 31208 transitions. Word has length 25 [2021-11-06 16:37:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:37:55,686 INFO L470 AbstractCegarLoop]: Abstraction has 21029 states and 31208 transitions. [2021-11-06 16:37:55,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 16:37:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 21029 states and 31208 transitions. [2021-11-06 16:37:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 16:37:55,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:55,690 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] [2021-11-06 16:37:55,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:37:55,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting vmci_qp_guest_endpoints_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:37:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2094824587, now seen corresponding path program 1 times [2021-11-06 16:37:55,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:55,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268570782] [2021-11-06 16:37:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:55,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:56,076 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 16:37:56,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:56,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268570782] [2021-11-06 16:37:56,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268570782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:37:56,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:37:56,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:37:56,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598196907] [2021-11-06 16:37:56,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:37:56,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:37:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:37:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:37:56,079 INFO L87 Difference]: Start difference. First operand 21029 states and 31208 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 16:37:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:37:56,760 INFO L93 Difference]: Finished difference Result 62543 states and 92902 transitions. [2021-11-06 16:37:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:37:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 29 [2021-11-06 16:37:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:37:56,863 INFO L225 Difference]: With dead ends: 62543 [2021-11-06 16:37:56,863 INFO L226 Difference]: Without dead ends: 41520 [2021-11-06 16:37:56,920 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 16:37:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41520 states. [2021-11-06 16:37:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41520 to 41358. [2021-11-06 16:37:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41358 states, 40761 states have (on average 1.4907632295576654) internal successors, (60765), 40852 states have internal predecessors, (60765), 410 states have call successors, (410), 120 states have call predecessors, (410), 120 states have return successors, (410), 397 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-06 16:37:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41358 states to 41358 states and 61585 transitions. [2021-11-06 16:37:57,746 INFO L78 Accepts]: Start accepts. Automaton has 41358 states and 61585 transitions. Word has length 29 [2021-11-06 16:37:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:37:57,747 INFO L470 AbstractCegarLoop]: Abstraction has 41358 states and 61585 transitions. [2021-11-06 16:37:57,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 16:37:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 41358 states and 61585 transitions. [2021-11-06 16:37:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 16:37:57,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:37:57,749 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 16:37:57,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:37:57,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:37:57,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:37:57,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1907895602, now seen corresponding path program 1 times [2021-11-06 16:37:57,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:37:57,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360961875] [2021-11-06 16:37:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:57,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:37:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:37:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:37:58,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:37:58,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360961875] [2021-11-06 16:37:58,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360961875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:37:58,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152853421] [2021-11-06 16:37:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:37:58,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:37:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:37:58,047 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 16:37:58,067 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 16:38:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:00,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 5272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:00,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:00,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152853421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:00,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:00,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:00,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365942732] [2021-11-06 16:38:00,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:00,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:00,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:00,890 INFO L87 Difference]: Start difference. First operand 41358 states and 61585 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 16:38:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:38:01,365 INFO L93 Difference]: Finished difference Result 41358 states and 61585 transitions. [2021-11-06 16:38:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:38:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 16:38:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:38:01,450 INFO L225 Difference]: With dead ends: 41358 [2021-11-06 16:38:01,450 INFO L226 Difference]: Without dead ends: 41356 [2021-11-06 16:38:01,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:01,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41356 states. [2021-11-06 16:38:02,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41356 to 41356. [2021-11-06 16:38:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41356 states, 40760 states have (on average 1.4907507360157017) internal successors, (60763), 40850 states have internal predecessors, (60763), 410 states have call successors, (410), 120 states have call predecessors, (410), 120 states have return successors, (410), 397 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-06 16:38:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41356 states to 41356 states and 61583 transitions. [2021-11-06 16:38:02,290 INFO L78 Accepts]: Start accepts. Automaton has 41356 states and 61583 transitions. Word has length 28 [2021-11-06 16:38:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:38:02,290 INFO L470 AbstractCegarLoop]: Abstraction has 41356 states and 61583 transitions. [2021-11-06 16:38:02,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 16:38:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 41356 states and 61583 transitions. [2021-11-06 16:38:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 16:38:02,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:38:02,291 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] [2021-11-06 16:38:02,329 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 16:38:02,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:02,507 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:38:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:38:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 984823757, now seen corresponding path program 1 times [2021-11-06 16:38:02,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:38:02,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078519953] [2021-11-06 16:38:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:02,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:38:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:38:02,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:38:02,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078519953] [2021-11-06 16:38:02,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078519953] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:38:02,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056674573] [2021-11-06 16:38:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:02,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:02,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:38:02,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:38:02,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 16:38:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:05,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:05,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056674573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:05,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:05,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:05,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458834703] [2021-11-06 16:38:05,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:05,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:05,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:05,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:05,407 INFO L87 Difference]: Start difference. First operand 41356 states and 61583 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 16:38:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:38:05,769 INFO L93 Difference]: Finished difference Result 41356 states and 61583 transitions. [2021-11-06 16:38:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:38:05,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-11-06 16:38:05,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:38:05,850 INFO L225 Difference]: With dead ends: 41356 [2021-11-06 16:38:05,851 INFO L226 Difference]: Without dead ends: 41354 [2021-11-06 16:38:05,870 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41354 states. [2021-11-06 16:38:06,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41354 to 41354. [2021-11-06 16:38:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41354 states, 40759 states have (on average 1.4907382418606934) internal successors, (60761), 40848 states have internal predecessors, (60761), 410 states have call successors, (410), 120 states have call predecessors, (410), 120 states have return successors, (410), 397 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-06 16:38:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41354 states to 41354 states and 61581 transitions. [2021-11-06 16:38:06,719 INFO L78 Accepts]: Start accepts. Automaton has 41354 states and 61581 transitions. Word has length 29 [2021-11-06 16:38:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:38:06,720 INFO L470 AbstractCegarLoop]: Abstraction has 41354 states and 61581 transitions. [2021-11-06 16:38:06,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 16:38:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 41354 states and 61581 transitions. [2021-11-06 16:38:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 16:38:06,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:38:06,723 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 16:38:06,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 16:38:06,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:06,948 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:38:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:38:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 464810680, now seen corresponding path program 1 times [2021-11-06 16:38:06,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:38:06,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762385742] [2021-11-06 16:38:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:06,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:38:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:38:07,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:38:07,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762385742] [2021-11-06 16:38:07,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762385742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:38:07,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054796980] [2021-11-06 16:38:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:07,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:07,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:38:07,353 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:38:07,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 16:38:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:09,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 5276 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:10,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054796980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:10,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:10,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:10,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407277217] [2021-11-06 16:38:10,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:10,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:10,021 INFO L87 Difference]: Start difference. First operand 41354 states and 61581 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 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 16:38:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:38:10,608 INFO L93 Difference]: Finished difference Result 50674 states and 75351 transitions. [2021-11-06 16:38:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:38:10,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 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 16:38:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:38:10,707 INFO L225 Difference]: With dead ends: 50674 [2021-11-06 16:38:10,707 INFO L226 Difference]: Without dead ends: 50668 [2021-11-06 16:38:10,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50668 states. [2021-11-06 16:38:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50668 to 50632. [2021-11-06 16:38:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50632 states, 49712 states have (on average 1.4902840360476344) internal successors, (74085), 49822 states have internal predecessors, (74085), 618 states have call successors, (618), 240 states have call predecessors, (618), 240 states have return successors, (618), 593 states have call predecessors, (618), 618 states have call successors, (618) [2021-11-06 16:38:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50632 states to 50632 states and 75321 transitions. [2021-11-06 16:38:11,728 INFO L78 Accepts]: Start accepts. Automaton has 50632 states and 75321 transitions. Word has length 30 [2021-11-06 16:38:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:38:11,729 INFO L470 AbstractCegarLoop]: Abstraction has 50632 states and 75321 transitions. [2021-11-06 16:38:11,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 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 16:38:11,730 INFO L276 IsEmpty]: Start isEmpty. Operand 50632 states and 75321 transitions. [2021-11-06 16:38:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-06 16:38:11,730 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:38:11,730 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] [2021-11-06 16:38:11,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 16:38:11,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:11,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:38:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:38:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1524274487, now seen corresponding path program 1 times [2021-11-06 16:38:11,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:38:11,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678088718] [2021-11-06 16:38:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:11,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:38:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:38:12,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:38:12,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678088718] [2021-11-06 16:38:12,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678088718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:38:12,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927083969] [2021-11-06 16:38:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:12,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:12,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:38:12,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:38:12,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 16:38:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:14,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 5278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:14,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:15,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927083969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:15,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:15,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:15,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715535540] [2021-11-06 16:38:15,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:15,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:15,021 INFO L87 Difference]: Start difference. First operand 50632 states and 75321 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 16:38:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:38:15,611 INFO L93 Difference]: Finished difference Result 50632 states and 75321 transitions. [2021-11-06 16:38:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:38:15,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-11-06 16:38:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:38:15,716 INFO L225 Difference]: With dead ends: 50632 [2021-11-06 16:38:15,718 INFO L226 Difference]: Without dead ends: 50630 [2021-11-06 16:38:15,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:15,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50630 states. [2021-11-06 16:38:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50630 to 50630. [2021-11-06 16:38:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50630 states, 49711 states have (on average 1.490273782462634) internal successors, (74083), 49820 states have internal predecessors, (74083), 618 states have call successors, (618), 240 states have call predecessors, (618), 240 states have return successors, (618), 593 states have call predecessors, (618), 618 states have call successors, (618) [2021-11-06 16:38:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50630 states to 50630 states and 75319 transitions. [2021-11-06 16:38:17,043 INFO L78 Accepts]: Start accepts. Automaton has 50630 states and 75319 transitions. Word has length 31 [2021-11-06 16:38:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:38:17,043 INFO L470 AbstractCegarLoop]: Abstraction has 50630 states and 75319 transitions. [2021-11-06 16:38:17,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 16:38:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 50630 states and 75319 transitions. [2021-11-06 16:38:17,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 16:38:17,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:38:17,044 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 16:38:17,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 16:38:17,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:17,267 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:38:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:38:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 7914146, now seen corresponding path program 1 times [2021-11-06 16:38:17,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:38:17,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164918651] [2021-11-06 16:38:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:17,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:38:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:38:17,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:38:17,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164918651] [2021-11-06 16:38:17,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164918651] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:38:17,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518005545] [2021-11-06 16:38:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:17,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:38:17,516 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:38:17,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 16:38:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:19,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 5280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:19,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:20,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518005545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:20,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:20,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:20,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448058357] [2021-11-06 16:38:20,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:20,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:20,017 INFO L87 Difference]: Start difference. First operand 50630 states and 75319 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 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 16:38:21,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:38:21,366 INFO L93 Difference]: Finished difference Result 117474 states and 176004 transitions. [2021-11-06 16:38:21,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:38:21,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 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 16:38:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:38:21,531 INFO L225 Difference]: With dead ends: 117474 [2021-11-06 16:38:21,532 INFO L226 Difference]: Without dead ends: 66850 [2021-11-06 16:38:21,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66850 states. [2021-11-06 16:38:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66850 to 65852. [2021-11-06 16:38:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65852 states, 64369 states have (on average 1.4898786683030651) internal successors, (95902), 64480 states have internal predecessors, (95902), 978 states have call successors, (978), 432 states have call predecessors, (978), 456 states have return successors, (1410), 971 states have call predecessors, (1410), 978 states have call successors, (1410) [2021-11-06 16:38:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65852 states to 65852 states and 98290 transitions. [2021-11-06 16:38:23,151 INFO L78 Accepts]: Start accepts. Automaton has 65852 states and 98290 transitions. Word has length 32 [2021-11-06 16:38:23,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:38:23,153 INFO L470 AbstractCegarLoop]: Abstraction has 65852 states and 98290 transitions. [2021-11-06 16:38:23,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 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 16:38:23,153 INFO L276 IsEmpty]: Start isEmpty. Operand 65852 states and 98290 transitions. [2021-11-06 16:38:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 16:38:23,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:38:23,155 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] [2021-11-06 16:38:23,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 16:38:23,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:23,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:38:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:38:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 245383841, now seen corresponding path program 1 times [2021-11-06 16:38:23,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:38:23,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473304818] [2021-11-06 16:38:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:23,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:38:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:38:23,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:38:23,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473304818] [2021-11-06 16:38:23,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473304818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:38:23,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620327499] [2021-11-06 16:38:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:23,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:23,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:38:23,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:38:23,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 16:38:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:26,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 5282 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:26,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:26,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620327499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:26,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:26,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:26,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035833938] [2021-11-06 16:38:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:26,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:26,289 INFO L87 Difference]: Start difference. First operand 65852 states and 98290 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 16:38:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:38:28,792 INFO L93 Difference]: Finished difference Result 197335 states and 298481 transitions. [2021-11-06 16:38:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:38:28,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-06 16:38:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:38:29,244 INFO L225 Difference]: With dead ends: 197335 [2021-11-06 16:38:29,245 INFO L226 Difference]: Without dead ends: 131489 [2021-11-06 16:38:29,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131489 states. [2021-11-06 16:38:32,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131489 to 131079. [2021-11-06 16:38:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131079 states, 128170 states have (on average 1.4907700709994538) internal successors, (191072), 128354 states have internal predecessors, (191072), 1956 states have call successors, (1956), 864 states have call predecessors, (1956), 904 states have return successors, (4628), 1924 states have call predecessors, (4628), 1956 states have call successors, (4628) [2021-11-06 16:38:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131079 states to 131079 states and 197656 transitions. [2021-11-06 16:38:32,734 INFO L78 Accepts]: Start accepts. Automaton has 131079 states and 197656 transitions. Word has length 33 [2021-11-06 16:38:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:38:32,735 INFO L470 AbstractCegarLoop]: Abstraction has 131079 states and 197656 transitions. [2021-11-06 16:38:32,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 16:38:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 131079 states and 197656 transitions. [2021-11-06 16:38:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 16:38:32,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:38:32,736 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 16:38:32,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-06 16:38:32,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:32,940 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-06 16:38:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:38:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -982990196, now seen corresponding path program 1 times [2021-11-06 16:38:32,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:38:32,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082607525] [2021-11-06 16:38:32,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:32,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:38:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:38:33,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:38:33,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082607525] [2021-11-06 16:38:33,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082607525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:38:33,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049545205] [2021-11-06 16:38:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:38:33,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:38:33,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:38:33,167 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:38:33,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 16:38:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:38:35,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 5284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:38:35,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:38:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 16:38:36,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049545205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:38:36,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:38:36,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-06 16:38:36,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719594263] [2021-11-06 16:38:36,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:38:36,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:38:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:38:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:38:36,046 INFO L87 Difference]: Start difference. First operand 131079 states and 197656 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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)