./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 5b36d44f 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-wip.dd.seqcomp-5b36d44 [2021-11-07 15:04:06,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:04:06,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:04:06,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:04:06,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:04:06,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:04:06,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:04:06,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:04:06,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:04:06,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:04:06,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:04:06,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:04:06,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:04:06,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:04:06,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:04:06,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:04:06,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:04:06,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:04:06,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:04:06,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:04:06,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:04:06,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:04:06,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:04:06,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:04:06,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:04:06,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:04:06,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:04:06,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:04:06,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:04:06,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:04:06,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:04:06,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:04:06,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:04:06,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:04:06,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:04:06,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:04:06,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:04:06,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:04:06,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:04:06,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:04:06,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:04:06,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:04:06,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:04:06,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:04:06,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:04:06,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:04:06,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:04:06,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:04:06,600 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:04:06,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:04:06,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:04:06,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:04:06,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:04:06,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:04:06,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:04:06,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:04:06,611 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:04:06,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:04:06,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:04:06,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:04:06,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:04:06,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:04:06,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:04:06,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:04:06,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:04:06,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:04:06,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:04:06,613 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:04:06,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:04:06,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:04:06,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:04:06,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-11-07 15:04:06,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:04:06,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:04:06,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:04:06,868 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:04:06,869 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:04:06,870 INFO L432 ainManager$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 [2021-11-07 15:04:06,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355134051/9b03eb75427a4c62ac36cf5b87f477fa/FLAG03b74929e [2021-11-07 15:04:07,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:04:07,682 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 [2021-11-07 15:04:07,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355134051/9b03eb75427a4c62ac36cf5b87f477fa/FLAG03b74929e [2021-11-07 15:04:07,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355134051/9b03eb75427a4c62ac36cf5b87f477fa [2021-11-07 15:04:07,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:04:07,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:04:07,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:04:07,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:04:07,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:04:07,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:04:07" (1/1) ... [2021-11-07 15:04:07,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f0c7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:07, skipping insertion in model container [2021-11-07 15:04:07,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:04:07" (1/1) ... [2021-11-07 15:04:07,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:04:08,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:04:12,299 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] [2021-11-07 15:04:12,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:04:12,771 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:04:13,151 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] [2021-11-07 15:04:13,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:04:13,450 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:04:13,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13 WrapperNode [2021-11-07 15:04:13,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:04:13,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:04:13,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:04:13,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:04:13,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:13,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:14,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:04:14,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:04:14,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:04:14,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:04:14,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:14,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:15,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:15,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:16,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:16,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:16,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:16,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:04:16,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:04:16,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:04:16,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:04:16,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (1/1) ... [2021-11-07 15:04:16,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:04:16,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:04:16,870 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) [2021-11-07 15:04:16,878 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 [2021-11-07 15:04:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-07 15:04:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-07 15:04:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-07 15:04:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-07 15:04:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-07 15:04:16,905 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-07 15:04:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-07 15:04:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-07 15:04:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 15:04:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-07 15:04:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-07 15:04:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:04:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-07 15:04:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-07 15:04:16,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:04:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-07 15:04:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-07 15:04:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:04:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:04:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-07 15:04:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-07 15:04:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 15:04:16,907 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 15:04:16,907 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-07 15:04:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-07 15:04:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:04:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-07 15:04:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-07 15:04:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:04:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 15:04:16,908 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-07 15:04:16,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-07 15:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 15:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 15:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 15:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 15:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-07 15:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-07 15:04:16,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:04:16,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 15:04:16,910 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 15:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-07 15:04:16,910 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-07 15:04:16,910 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-07 15:04:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-07 15:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-07 15:04:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-07 15:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:04:16,911 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-07 15:04:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-07 15:04:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-07 15:04:16,912 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-07 15:04:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:04:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-07 15:04:16,912 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-07 15:04:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-07 15:04:16,913 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-07 15:04:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-07 15:04:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-07 15:04:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:04:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-07 15:04:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-07 15:04:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-07 15:04:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-07 15:04:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-07 15:04:16,914 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-07 15:04:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-07 15:04:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-07 15:04:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 15:04:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 15:04:16,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:04:16,916 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-07 15:04:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-07 15:05:18,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:05:18,428 INFO L299 CfgBuilder]: Removed 8979 assume(true) statements. [2021-11-07 15:05:18,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:05:18 BoogieIcfgContainer [2021-11-07 15:05:18,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:05:18,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:05:18,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:05:18,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:05:18,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:04:07" (1/3) ... [2021-11-07 15:05:18,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c851c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:05:18, skipping insertion in model container [2021-11-07 15:05:18,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:04:13" (2/3) ... [2021-11-07 15:05:18,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c851c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:05:18, skipping insertion in model container [2021-11-07 15:05:18,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:05:18" (3/3) ... [2021-11-07 15:05:18,445 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 [2021-11-07 15:05:18,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:05:18,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-07 15:05:18,507 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:05:18,511 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 [2021-11-07 15:05:18,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-07 15:05:18,625 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) [2021-11-07 15:05:18,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 15:05:18,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:18,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:18,635 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)] === [2021-11-07 15:05:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1959735566, now seen corresponding path program 1 times [2021-11-07 15:05:18,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:18,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870211230] [2021-11-07 15:05:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:18,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:19,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:19,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870211230] [2021-11-07 15:05:19,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870211230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:19,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:05:19,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:05:19,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41000565] [2021-11-07 15:05:19,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:19,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:19,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:19,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:05:19,430 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) [2021-11-07 15:05:21,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 15:05:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:22,353 INFO L93 Difference]: Finished difference Result 31874 states and 47995 transitions. [2021-11-07 15:05:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:22,356 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 [2021-11-07 15:05:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:22,464 INFO L225 Difference]: With dead ends: 31874 [2021-11-07 15:05:22,465 INFO L226 Difference]: Without dead ends: 21144 [2021-11-07 15:05:22,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:05:22,513 INFO L933 BasicCegarLoop]: 15936 mSDtfsCounter, 15744 mSDsluCounter, 15519 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2148.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15744 SdHoareTripleChecker+Valid, 31455 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.39ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2293.29ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:22,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15744 Valid, 31455 Invalid, 15 Unknown, 0 Unchecked, 64.39ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2293.29ms Time] [2021-11-07 15:05:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21144 states. [2021-11-07 15:05:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21144 to 21028. [2021-11-07 15:05:23,360 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) [2021-11-07 15:05:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 31207 transitions. [2021-11-07 15:05:23,421 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 31207 transitions. Word has length 24 [2021-11-07 15:05:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:23,423 INFO L470 AbstractCegarLoop]: Abstraction has 21028 states and 31207 transitions. [2021-11-07 15:05:23,423 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) [2021-11-07 15:05:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 31207 transitions. [2021-11-07 15:05:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 15:05:23,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:23,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:23,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:05:23,426 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)] === [2021-11-07 15:05:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash 801400433, now seen corresponding path program 1 times [2021-11-07 15:05:23,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:23,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64341280] [2021-11-07 15:05:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:23,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:23,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:23,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64341280] [2021-11-07 15:05:23,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64341280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:23,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:05:23,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:05:23,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264515867] [2021-11-07 15:05:23,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:23,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:23,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:23,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:05:23,750 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) [2021-11-07 15:05:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:24,164 INFO L93 Difference]: Finished difference Result 42053 states and 62412 transitions. [2021-11-07 15:05:24,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:24,165 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 [2021-11-07 15:05:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:24,228 INFO L225 Difference]: With dead ends: 42053 [2021-11-07 15:05:24,228 INFO L226 Difference]: Without dead ends: 21031 [2021-11-07 15:05:24,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:05:24,267 INFO L933 BasicCegarLoop]: 15822 mSDtfsCounter, 2 mSDsluCounter, 15820 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31642 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.29ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:24,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 31642 Invalid, 7 Unknown, 0 Unchecked, 25.52ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 31.29ms Time] [2021-11-07 15:05:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2021-11-07 15:05:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 21029. [2021-11-07 15:05:24,877 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) [2021-11-07 15:05:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21029 states to 21029 states and 31208 transitions. [2021-11-07 15:05:24,930 INFO L78 Accepts]: Start accepts. Automaton has 21029 states and 31208 transitions. Word has length 25 [2021-11-07 15:05:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:24,930 INFO L470 AbstractCegarLoop]: Abstraction has 21029 states and 31208 transitions. [2021-11-07 15:05:24,930 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) [2021-11-07 15:05:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 21029 states and 31208 transitions. [2021-11-07 15:05:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 15:05:24,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:24,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:24,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:05:24,935 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)] === [2021-11-07 15:05:24,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2094824587, now seen corresponding path program 1 times [2021-11-07 15:05:24,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:24,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314874198] [2021-11-07 15:05:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:24,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:25,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:25,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314874198] [2021-11-07 15:05:25,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314874198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:25,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:05:25,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:05:25,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523852992] [2021-11-07 15:05:25,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:25,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:25,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:25,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:05:25,386 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) [2021-11-07 15:05:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:26,211 INFO L93 Difference]: Finished difference Result 62543 states and 92902 transitions. [2021-11-07 15:05:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:26,212 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 [2021-11-07 15:05:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:26,334 INFO L225 Difference]: With dead ends: 62543 [2021-11-07 15:05:26,334 INFO L226 Difference]: Without dead ends: 41520 [2021-11-07 15:05:26,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:05:26,391 INFO L933 BasicCegarLoop]: 15928 mSDtfsCounter, 15450 mSDsluCounter, 15806 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15450 SdHoareTripleChecker+Valid, 31734 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.72ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.02ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:26,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15450 Valid, 31734 Invalid, 16 Unknown, 0 Unchecked, 40.72ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 172.02ms Time] [2021-11-07 15:05:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41520 states. [2021-11-07 15:05:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41520 to 41358. [2021-11-07 15:05:27,500 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) [2021-11-07 15:05:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41358 states to 41358 states and 61585 transitions. [2021-11-07 15:05:27,599 INFO L78 Accepts]: Start accepts. Automaton has 41358 states and 61585 transitions. Word has length 29 [2021-11-07 15:05:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:27,599 INFO L470 AbstractCegarLoop]: Abstraction has 41358 states and 61585 transitions. [2021-11-07 15:05:27,599 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) [2021-11-07 15:05:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 41358 states and 61585 transitions. [2021-11-07 15:05:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 15:05:27,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:27,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:27,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:05:27,602 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)] === [2021-11-07 15:05:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1907895602, now seen corresponding path program 1 times [2021-11-07 15:05:27,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:27,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939401489] [2021-11-07 15:05:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:27,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:27,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:27,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939401489] [2021-11-07 15:05:27,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939401489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:05:27,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479965696] [2021-11-07 15:05:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:27,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:05:27,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:05:27,911 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) [2021-11-07 15:05:27,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 15:05:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 5272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:05:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:05:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:05:30,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:05:30,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479965696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:30,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:05:30,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:05:30,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117381433] [2021-11-07 15:05:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:30,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:30,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:30,401 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) [2021-11-07 15:05:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:30,794 INFO L93 Difference]: Finished difference Result 41358 states and 61585 transitions. [2021-11-07 15:05:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:30,795 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 [2021-11-07 15:05:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:30,883 INFO L225 Difference]: With dead ends: 41358 [2021-11-07 15:05:30,883 INFO L226 Difference]: Without dead ends: 41356 [2021-11-07 15:05:30,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.31ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:30,903 INFO L933 BasicCegarLoop]: 15822 mSDtfsCounter, 15797 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15797 SdHoareTripleChecker+Valid, 15822 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.29ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:30,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15797 Valid, 15822 Invalid, 1 Unknown, 0 Unchecked, 16.18ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.29ms Time] [2021-11-07 15:05:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41356 states. [2021-11-07 15:05:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41356 to 41356. [2021-11-07 15:05:31,692 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) [2021-11-07 15:05:31,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41356 states to 41356 states and 61583 transitions. [2021-11-07 15:05:31,778 INFO L78 Accepts]: Start accepts. Automaton has 41356 states and 61583 transitions. Word has length 28 [2021-11-07 15:05:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:31,778 INFO L470 AbstractCegarLoop]: Abstraction has 41356 states and 61583 transitions. [2021-11-07 15:05:31,778 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) [2021-11-07 15:05:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 41356 states and 61583 transitions. [2021-11-07 15:05:31,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 15:05:31,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:31,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:31,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 15:05:32,003 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 [2021-11-07 15:05:32,003 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)] === [2021-11-07 15:05:32,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash 984823757, now seen corresponding path program 1 times [2021-11-07 15:05:32,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:32,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169040095] [2021-11-07 15:05:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:32,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:32,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:32,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169040095] [2021-11-07 15:05:32,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169040095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:05:32,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98850533] [2021-11-07 15:05:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:32,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:05:32,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:05:32,277 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) [2021-11-07 15:05:32,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 15:05:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:34,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:05:34,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:05:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:05:34,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:05:34,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98850533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:34,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:05:34,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:05:34,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443282287] [2021-11-07 15:05:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:34,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:34,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:34,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:34,575 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) [2021-11-07 15:05:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:35,062 INFO L93 Difference]: Finished difference Result 41356 states and 61583 transitions. [2021-11-07 15:05:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:35,063 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 [2021-11-07 15:05:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:35,165 INFO L225 Difference]: With dead ends: 41356 [2021-11-07 15:05:35,165 INFO L226 Difference]: Without dead ends: 41354 [2021-11-07 15:05:35,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.32ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:35,186 INFO L933 BasicCegarLoop]: 15820 mSDtfsCounter, 15794 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15794 SdHoareTripleChecker+Valid, 15820 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.03ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:35,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15794 Valid, 15820 Invalid, 1 Unknown, 0 Unchecked, 15.75ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.03ms Time] [2021-11-07 15:05:35,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41354 states. [2021-11-07 15:05:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41354 to 41354. [2021-11-07 15:05:35,956 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) [2021-11-07 15:05:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41354 states to 41354 states and 61581 transitions. [2021-11-07 15:05:36,046 INFO L78 Accepts]: Start accepts. Automaton has 41354 states and 61581 transitions. Word has length 29 [2021-11-07 15:05:36,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:36,047 INFO L470 AbstractCegarLoop]: Abstraction has 41354 states and 61581 transitions. [2021-11-07 15:05:36,047 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) [2021-11-07 15:05:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 41354 states and 61581 transitions. [2021-11-07 15:05:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 15:05:36,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:36,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:36,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 15:05:36,275 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 [2021-11-07 15:05:36,275 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)] === [2021-11-07 15:05:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 464810680, now seen corresponding path program 1 times [2021-11-07 15:05:36,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:36,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372237996] [2021-11-07 15:05:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:36,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:36,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:36,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372237996] [2021-11-07 15:05:36,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372237996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:05:36,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428152280] [2021-11-07 15:05:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:36,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:05:36,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:05:36,716 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) [2021-11-07 15:05:36,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 15:05:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:38,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 5276 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:05:38,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:05:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:05:39,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:05:39,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428152280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:39,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:05:39,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:05:39,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407409733] [2021-11-07 15:05:39,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:39,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:39,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:39,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:39,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:39,048 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) [2021-11-07 15:05:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:39,607 INFO L93 Difference]: Finished difference Result 50674 states and 75351 transitions. [2021-11-07 15:05:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:39,608 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 [2021-11-07 15:05:39,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:39,711 INFO L225 Difference]: With dead ends: 50674 [2021-11-07 15:05:39,712 INFO L226 Difference]: Without dead ends: 50668 [2021-11-07 15:05:39,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.08ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:39,733 INFO L933 BasicCegarLoop]: 15897 mSDtfsCounter, 15167 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15167 SdHoareTripleChecker+Valid, 19965 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.57ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.78ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:39,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15167 Valid, 19965 Invalid, 13 Unknown, 0 Unchecked, 17.57ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 8.78ms Time] [2021-11-07 15:05:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50668 states. [2021-11-07 15:05:40,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50668 to 50632. [2021-11-07 15:05:40,670 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) [2021-11-07 15:05:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50632 states to 50632 states and 75321 transitions. [2021-11-07 15:05:40,891 INFO L78 Accepts]: Start accepts. Automaton has 50632 states and 75321 transitions. Word has length 30 [2021-11-07 15:05:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:40,892 INFO L470 AbstractCegarLoop]: Abstraction has 50632 states and 75321 transitions. [2021-11-07 15:05:40,892 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) [2021-11-07 15:05:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 50632 states and 75321 transitions. [2021-11-07 15:05:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 15:05:40,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:40,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:40,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 15:05:41,107 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 [2021-11-07 15:05:41,107 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)] === [2021-11-07 15:05:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1524274487, now seen corresponding path program 1 times [2021-11-07 15:05:41,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:41,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729594298] [2021-11-07 15:05:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:41,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:41,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:41,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729594298] [2021-11-07 15:05:41,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729594298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:05:41,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905283192] [2021-11-07 15:05:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:41,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:05:41,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:05:41,350 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) [2021-11-07 15:05:41,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 15:05:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:43,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 5278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:05:43,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:05:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:05:43,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:05:43,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905283192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:43,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:05:43,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:05:43,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675541783] [2021-11-07 15:05:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:43,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:43,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:43,617 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) [2021-11-07 15:05:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:44,170 INFO L93 Difference]: Finished difference Result 50632 states and 75321 transitions. [2021-11-07 15:05:44,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:44,170 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 [2021-11-07 15:05:44,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:44,261 INFO L225 Difference]: With dead ends: 50632 [2021-11-07 15:05:44,261 INFO L226 Difference]: Without dead ends: 50630 [2021-11-07 15:05:44,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.98ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:44,280 INFO L933 BasicCegarLoop]: 15812 mSDtfsCounter, 15784 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15784 SdHoareTripleChecker+Valid, 15812 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.23ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:44,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15784 Valid, 15812 Invalid, 1 Unknown, 0 Unchecked, 13.64ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.23ms Time] [2021-11-07 15:05:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50630 states. [2021-11-07 15:05:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50630 to 50630. [2021-11-07 15:05:45,362 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) [2021-11-07 15:05:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50630 states to 50630 states and 75319 transitions. [2021-11-07 15:05:45,491 INFO L78 Accepts]: Start accepts. Automaton has 50630 states and 75319 transitions. Word has length 31 [2021-11-07 15:05:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:45,491 INFO L470 AbstractCegarLoop]: Abstraction has 50630 states and 75319 transitions. [2021-11-07 15:05:45,491 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) [2021-11-07 15:05:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 50630 states and 75319 transitions. [2021-11-07 15:05:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 15:05:45,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:45,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:45,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 15:05:45,693 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 [2021-11-07 15:05:45,693 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)] === [2021-11-07 15:05:45,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash 7914146, now seen corresponding path program 1 times [2021-11-07 15:05:45,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:45,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048034234] [2021-11-07 15:05:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:45,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:46,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:46,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048034234] [2021-11-07 15:05:46,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048034234] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:05:46,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080892275] [2021-11-07 15:05:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:46,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:05:46,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:05:46,064 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) [2021-11-07 15:05:46,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 15:05:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:48,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 5280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:05:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:05:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:05:48,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:05:48,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080892275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:48,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:05:48,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:05:48,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702646334] [2021-11-07 15:05:48,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:48,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:48,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:48,154 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) [2021-11-07 15:05:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:49,407 INFO L93 Difference]: Finished difference Result 117474 states and 176004 transitions. [2021-11-07 15:05:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:49,407 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 [2021-11-07 15:05:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:49,585 INFO L225 Difference]: With dead ends: 117474 [2021-11-07 15:05:49,585 INFO L226 Difference]: Without dead ends: 66850 [2021-11-07 15:05:49,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.03ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:49,697 INFO L933 BasicCegarLoop]: 16640 mSDtfsCounter, 11197 mSDsluCounter, 7810 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11197 SdHoareTripleChecker+Valid, 24450 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.50ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.49ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:49,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11197 Valid, 24450 Invalid, 127 Unknown, 0 Unchecked, 17.50ms Time], IncrementalHoareTripleChecker [46 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 104.49ms Time] [2021-11-07 15:05:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66850 states. [2021-11-07 15:05:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66850 to 65852. [2021-11-07 15:05:51,117 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) [2021-11-07 15:05:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65852 states to 65852 states and 98290 transitions. [2021-11-07 15:05:51,289 INFO L78 Accepts]: Start accepts. Automaton has 65852 states and 98290 transitions. Word has length 32 [2021-11-07 15:05:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:05:51,290 INFO L470 AbstractCegarLoop]: Abstraction has 65852 states and 98290 transitions. [2021-11-07 15:05:51,290 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) [2021-11-07 15:05:51,290 INFO L276 IsEmpty]: Start isEmpty. Operand 65852 states and 98290 transitions. [2021-11-07 15:05:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 15:05:51,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:05:51,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:05:51,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 15:05:51,505 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 [2021-11-07 15:05:51,505 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)] === [2021-11-07 15:05:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:05:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash 245383841, now seen corresponding path program 1 times [2021-11-07 15:05:51,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:05:51,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887208922] [2021-11-07 15:05:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:51,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:05:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:05:51,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:05:51,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887208922] [2021-11-07 15:05:51,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887208922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:05:51,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016089148] [2021-11-07 15:05:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:05:51,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:05:51,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:05:51,980 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) [2021-11-07 15:05:51,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 15:05:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:05:54,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 5282 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:05:54,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:05:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:05:54,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:05:54,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016089148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:05:54,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:05:54,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:05:54,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110680997] [2021-11-07 15:05:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:05:54,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:05:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:05:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:05:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:54,282 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) [2021-11-07 15:05:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:05:56,547 INFO L93 Difference]: Finished difference Result 197335 states and 298481 transitions. [2021-11-07 15:05:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:05:56,548 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 [2021-11-07 15:05:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:05:56,870 INFO L225 Difference]: With dead ends: 197335 [2021-11-07 15:05:56,871 INFO L226 Difference]: Without dead ends: 131489 [2021-11-07 15:05:56,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.91ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:05:56,987 INFO L933 BasicCegarLoop]: 16018 mSDtfsCounter, 15815 mSDsluCounter, 15832 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15815 SdHoareTripleChecker+Valid, 31850 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.81ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.96ms IncrementalHoareTripleChecker+Time [2021-11-07 15:05:56,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15815 Valid, 31850 Invalid, 63 Unknown, 0 Unchecked, 28.81ms Time], IncrementalHoareTripleChecker [25 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 64.96ms Time] [2021-11-07 15:05:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131489 states. [2021-11-07 15:05:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131489 to 131079. [2021-11-07 15:05:59,921 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) [2021-11-07 15:06:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131079 states to 131079 states and 197656 transitions. [2021-11-07 15:06:00,593 INFO L78 Accepts]: Start accepts. Automaton has 131079 states and 197656 transitions. Word has length 33 [2021-11-07 15:06:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:06:00,594 INFO L470 AbstractCegarLoop]: Abstraction has 131079 states and 197656 transitions. [2021-11-07 15:06:00,594 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) [2021-11-07 15:06:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 131079 states and 197656 transitions. [2021-11-07 15:06:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 15:06:00,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:06:00,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:06:00,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 15:06:00,799 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 [2021-11-07 15:06:00,801 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)] === [2021-11-07 15:06:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:06:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash -982990196, now seen corresponding path program 1 times [2021-11-07 15:06:00,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:06:00,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739594588] [2021-11-07 15:06:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:06:00,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:06:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:06:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:06:01,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:06:01,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739594588] [2021-11-07 15:06:01,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739594588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 15:06:01,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34768301] [2021-11-07 15:06:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:06:01,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 15:06:01,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:06:01,056 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) [2021-11-07 15:06:01,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 15:06:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:06:03,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 5284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 15:06:03,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 15:06:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 15:06:03,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 15:06:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34768301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:06:03,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 15:06:03,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 15:06:03,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70748392] [2021-11-07 15:06:03,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:06:03,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:06:03,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:06:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:06:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:06:03,366 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) [2021-11-07 15:06:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:06:05,340 INFO L93 Difference]: Finished difference Result 131079 states and 197656 transitions. [2021-11-07 15:06:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 15:06:05,341 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 34 [2021-11-07 15:06:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:06:05,675 INFO L225 Difference]: With dead ends: 131079 [2021-11-07 15:06:05,675 INFO L226 Difference]: Without dead ends: 131046 [2021-11-07 15:06:05,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.99ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:06:05,720 INFO L933 BasicCegarLoop]: 15772 mSDtfsCounter, 15633 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15633 SdHoareTripleChecker+Valid, 15864 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.01ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.40ms IncrementalHoareTripleChecker+Time [2021-11-07 15:06:05,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15633 Valid, 15864 Invalid, 30 Unknown, 0 Unchecked, 15.01ms Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 38.40ms Time] [2021-11-07 15:06:05,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131046 states.