./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 fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 00:53:41,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:53:41,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:53:41,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:53:41,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:53:41,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:53:41,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:53:41,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:53:41,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:53:41,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:53:41,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:53:41,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:53:41,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:53:41,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:53:41,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:53:41,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:53:41,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:53:41,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:53:41,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:53:41,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:53:41,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:53:41,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:53:41,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:53:41,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:53:41,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:53:41,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:53:41,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:53:41,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:53:41,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:53:41,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:53:41,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:53:41,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:53:41,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:53:41,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:53:41,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:53:41,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:53:41,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:53:41,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:53:41,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:53:41,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:53:41,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:53:41,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 00:53:41,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:53:41,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:53:41,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 00:53:41,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 00:53:41,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:53:41,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:53:41,372 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 00:53:41,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:53:41,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:53:41,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:53:41,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:53:41,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:53:41,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:53:41,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:53:41,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:53:41,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:53:41,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:53:41,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 00:53:41,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 00:53:41,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:53:41,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:53:41,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:53:41,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:53:41,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 00:53:41,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:53:41,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 00:53:41,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 00:53:41,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:53:41,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 00:53:41,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-11-23 00:53:41,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:53:41,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:53:41,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:53:41,568 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:53:41,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:53:41,576 INFO L432 ainManager$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 [2021-11-23 00:53:41,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1375b0a5a/e69ec122cbe5422381c885dd3b92faa3/FLAGcf1ce01f0 [2021-11-23 00:53:42,258 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:53:42,259 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 [2021-11-23 00:53:42,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1375b0a5a/e69ec122cbe5422381c885dd3b92faa3/FLAGcf1ce01f0 [2021-11-23 00:53:42,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1375b0a5a/e69ec122cbe5422381c885dd3b92faa3 [2021-11-23 00:53:42,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:53:42,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:53:42,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:53:42,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:53:42,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:53:42,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:53:42" (1/1) ... [2021-11-23 00:53:42,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5fe90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:42, skipping insertion in model container [2021-11-23 00:53:42,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:53:42" (1/1) ... [2021-11-23 00:53:42,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:53:42,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:53:45,295 WARN L230 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] [2021-11-23 00:53:45,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:53:45,564 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:53:45,920 WARN L230 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] [2021-11-23 00:53:45,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:53:46,109 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:53:46,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46 WrapperNode [2021-11-23 00:53:46,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:53:46,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:53:46,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:53:46,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:53:46,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:46,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:47,287 INFO L137 Inliner]: procedures = 713, calls = 6159, calls flagged for inlining = 1565, calls inlined = 4493, statements flattened = 65156 [2021-11-23 00:53:47,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:53:47,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:53:47,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:53:47,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:53:47,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:47,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:47,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:47,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:48,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:48,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:48,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:48,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:53:48,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:53:48,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:53:48,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:53:48,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (1/1) ... [2021-11-23 00:53:48,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 00:53:48,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:53:48,961 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) [2021-11-23 00:53:48,991 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 [2021-11-23 00:53:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-23 00:53:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-23 00:53:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-23 00:53:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-23 00:53:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-23 00:53:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-23 00:53:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-23 00:53:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-23 00:53:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 00:53:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-23 00:53:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-23 00:53:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 00:53:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-23 00:53:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-23 00:53:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 00:53:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-23 00:53:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-23 00:53:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 00:53:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 00:53:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-23 00:53:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-23 00:53:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 00:53:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 00:53:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-23 00:53:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-23 00:53:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 00:53:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-23 00:53:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-23 00:53:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:53:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 00:53:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 00:53:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-23 00:53:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-23 00:53:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 00:53:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 00:53:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 00:53:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 00:53:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-23 00:53:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-23 00:53:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:53:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:53:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-23 00:53:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-23 00:53:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 00:53:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 00:53:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-23 00:53:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-23 00:53:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-23 00:53:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-23 00:53:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-23 00:53:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-23 00:53:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 00:53:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 00:53:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-23 00:53:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-23 00:53:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-23 00:53:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-23 00:53:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 00:53:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-23 00:53:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-23 00:53:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-23 00:53:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-23 00:53:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-23 00:53:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-23 00:53:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 00:53:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-23 00:53:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-23 00:53:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-23 00:53:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-23 00:53:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-23 00:53:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-23 00:53:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-23 00:53:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-23 00:53:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 00:53:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 00:53:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:53:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-23 00:53:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-23 00:53:50,722 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:53:50,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:54:30,095 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:54:30,131 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:54:30,132 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 00:54:30,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:30 BoogieIcfgContainer [2021-11-23 00:54:30,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:54:30,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 00:54:30,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 00:54:30,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 00:54:30,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:53:42" (1/3) ... [2021-11-23 00:54:30,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2687b971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:54:30, skipping insertion in model container [2021-11-23 00:54:30,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:46" (2/3) ... [2021-11-23 00:54:30,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2687b971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:54:30, skipping insertion in model container [2021-11-23 00:54:30,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:30" (3/3) ... [2021-11-23 00:54:30,149 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 [2021-11-23 00:54:30,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 00:54:30,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-23 00:54:30,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 00:54:30,225 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 [2021-11-23 00:54:30,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-23 00:54:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 11658 states, 11456 states have (on average 1.4658694134078212) internal successors, (16793), 11529 states have internal predecessors, (16793), 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) [2021-11-23 00:54:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 00:54:30,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:30,345 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] [2021-11-23 00:54:30,345 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)] === [2021-11-23 00:54:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash -370560647, now seen corresponding path program 1 times [2021-11-23 00:54:30,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120134712] [2021-11-23 00:54:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:30,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:30,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:30,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120134712] [2021-11-23 00:54:30,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120134712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:30,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:54:30,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:54:30,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875223924] [2021-11-23 00:54:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:30,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:30,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:54:30,897 INFO L87 Difference]: Start difference. First operand has 11658 states, 11456 states have (on average 1.4658694134078212) internal successors, (16793), 11529 states have internal predecessors, (16793), 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 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:54:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:31,255 INFO L93 Difference]: Finished difference Result 23246 states and 34037 transitions. [2021-11-23 00:54:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:31,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 00:54:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:31,314 INFO L225 Difference]: With dead ends: 23246 [2021-11-23 00:54:31,318 INFO L226 Difference]: Without dead ends: 11586 [2021-11-23 00:54:31,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:54:31,353 INFO L933 BasicCegarLoop]: 16701 mSDtfsCounter, 2 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33400 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:31,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 33400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:54:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2021-11-23 00:54:31,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 11584. [2021-11-23 00:54:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11584 states, 11383 states have (on average 1.4482122463322498) internal successors, (16485), 11455 states have internal predecessors, (16485), 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) [2021-11-23 00:54:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11584 states to 11584 states and 16693 transitions. [2021-11-23 00:54:31,929 INFO L78 Accepts]: Start accepts. Automaton has 11584 states and 16693 transitions. Word has length 26 [2021-11-23 00:54:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:31,930 INFO L470 AbstractCegarLoop]: Abstraction has 11584 states and 16693 transitions. [2021-11-23 00:54:31,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:54:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11584 states and 16693 transitions. [2021-11-23 00:54:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 00:54:31,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:31,937 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] [2021-11-23 00:54:31,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 00:54:31,937 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)] === [2021-11-23 00:54:31,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:31,938 INFO L85 PathProgramCache]: Analyzing trace with hash -911319470, now seen corresponding path program 1 times [2021-11-23 00:54:31,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:31,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887816689] [2021-11-23 00:54:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:31,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:32,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:32,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887816689] [2021-11-23 00:54:32,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887816689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:32,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:54:32,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:54:32,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114443767] [2021-11-23 00:54:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:32,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:32,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:54:32,284 INFO L87 Difference]: Start difference. First operand 11584 states and 16693 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:54:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:32,823 INFO L93 Difference]: Finished difference Result 34431 states and 49664 transitions. [2021-11-23 00:54:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:32,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-23 00:54:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:32,900 INFO L225 Difference]: With dead ends: 34431 [2021-11-23 00:54:32,900 INFO L226 Difference]: Without dead ends: 22853 [2021-11-23 00:54:32,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:54:32,934 INFO L933 BasicCegarLoop]: 16791 mSDtfsCounter, 16592 mSDsluCounter, 16359 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16592 SdHoareTripleChecker+Valid, 33150 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:32,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16592 Valid, 33150 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:54:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22853 states. [2021-11-23 00:54:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22853 to 22737. [2021-11-23 00:54:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22737 states, 22404 states have (on average 1.4508123549366185) internal successors, (32504), 22482 states have internal predecessors, (32504), 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) [2021-11-23 00:54:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22737 states to 22737 states and 32916 transitions. [2021-11-23 00:54:33,593 INFO L78 Accepts]: Start accepts. Automaton has 22737 states and 32916 transitions. Word has length 26 [2021-11-23 00:54:33,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:33,593 INFO L470 AbstractCegarLoop]: Abstraction has 22737 states and 32916 transitions. [2021-11-23 00:54:33,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 00:54:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 22737 states and 32916 transitions. [2021-11-23 00:54:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 00:54:33,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:33,595 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] [2021-11-23 00:54:33,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 00:54:33,595 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)] === [2021-11-23 00:54:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash -127810569, now seen corresponding path program 1 times [2021-11-23 00:54:33,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:33,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184338668] [2021-11-23 00:54:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:33,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:33,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:33,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184338668] [2021-11-23 00:54:33,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184338668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:33,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 00:54:33,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 00:54:33,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100354587] [2021-11-23 00:54:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:33,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:33,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:54:33,784 INFO L87 Difference]: Start difference. First operand 22737 states and 32916 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-23 00:54:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:34,678 INFO L93 Difference]: Finished difference Result 67619 states and 97978 transitions. [2021-11-23 00:54:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 30 [2021-11-23 00:54:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:34,775 INFO L225 Difference]: With dead ends: 67619 [2021-11-23 00:54:34,775 INFO L226 Difference]: Without dead ends: 44888 [2021-11-23 00:54:34,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 00:54:34,824 INFO L933 BasicCegarLoop]: 16966 mSDtfsCounter, 16294 mSDsluCounter, 16671 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16294 SdHoareTripleChecker+Valid, 33637 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:34,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16294 Valid, 33637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:54:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44888 states. [2021-11-23 00:54:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44888 to 44717. [2021-11-23 00:54:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44717 states, 44120 states have (on average 1.4533998186763373) internal successors, (64124), 44211 states have internal predecessors, (64124), 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) [2021-11-23 00:54:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44717 states to 44717 states and 64944 transitions. [2021-11-23 00:54:35,807 INFO L78 Accepts]: Start accepts. Automaton has 44717 states and 64944 transitions. Word has length 30 [2021-11-23 00:54:35,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:35,807 INFO L470 AbstractCegarLoop]: Abstraction has 44717 states and 64944 transitions. [2021-11-23 00:54:35,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-23 00:54:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 44717 states and 64944 transitions. [2021-11-23 00:54:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 00:54:35,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:35,809 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] [2021-11-23 00:54:35,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 00:54:35,809 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)] === [2021-11-23 00:54:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash 268955378, now seen corresponding path program 1 times [2021-11-23 00:54:35,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:35,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207765943] [2021-11-23 00:54:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:35,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:36,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:36,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207765943] [2021-11-23 00:54:36,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207765943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:54:36,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544780276] [2021-11-23 00:54:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:36,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:54:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:54:36,140 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) [2021-11-23 00:54:36,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 00:54:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:38,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 4877 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:54:38,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:54:38,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:54:38,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544780276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:38,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:54:38,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:54:38,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194576225] [2021-11-23 00:54:38,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:38,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:38,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:38,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:38,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:38,228 INFO L87 Difference]: Start difference. First operand 44717 states and 64944 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) [2021-11-23 00:54:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:38,739 INFO L93 Difference]: Finished difference Result 44717 states and 64944 transitions. [2021-11-23 00:54:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:38,740 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 [2021-11-23 00:54:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:38,836 INFO L225 Difference]: With dead ends: 44717 [2021-11-23 00:54:38,836 INFO L226 Difference]: Without dead ends: 44715 [2021-11-23 00:54:38,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:38,858 INFO L933 BasicCegarLoop]: 16689 mSDtfsCounter, 16663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16663 SdHoareTripleChecker+Valid, 16689 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:38,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16663 Valid, 16689 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:54:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44715 states. [2021-11-23 00:54:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44715 to 44715. [2021-11-23 00:54:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44715 states, 44119 states have (on average 1.4533874294521634) internal successors, (64122), 44209 states have internal predecessors, (64122), 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) [2021-11-23 00:54:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44715 states to 44715 states and 64942 transitions. [2021-11-23 00:54:39,761 INFO L78 Accepts]: Start accepts. Automaton has 44715 states and 64942 transitions. Word has length 29 [2021-11-23 00:54:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:39,762 INFO L470 AbstractCegarLoop]: Abstraction has 44715 states and 64942 transitions. [2021-11-23 00:54:39,762 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) [2021-11-23 00:54:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 44715 states and 64942 transitions. [2021-11-23 00:54:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 00:54:39,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:39,764 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] [2021-11-23 00:54:39,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 00:54:39,991 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 [2021-11-23 00:54:39,992 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)] === [2021-11-23 00:54:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -252270688, now seen corresponding path program 1 times [2021-11-23 00:54:39,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346704712] [2021-11-23 00:54:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:39,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:40,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346704712] [2021-11-23 00:54:40,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346704712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:54:40,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532737880] [2021-11-23 00:54:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:40,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:54:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:54:40,444 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) [2021-11-23 00:54:40,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 00:54:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:42,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 4879 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:54:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:54:42,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:54:42,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532737880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:42,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:54:42,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:54:42,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502771501] [2021-11-23 00:54:42,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:42,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:42,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:42,147 INFO L87 Difference]: Start difference. First operand 44715 states and 64942 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) [2021-11-23 00:54:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:42,707 INFO L93 Difference]: Finished difference Result 44715 states and 64942 transitions. [2021-11-23 00:54:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:42,708 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 [2021-11-23 00:54:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:42,792 INFO L225 Difference]: With dead ends: 44715 [2021-11-23 00:54:42,793 INFO L226 Difference]: Without dead ends: 44713 [2021-11-23 00:54:42,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:42,809 INFO L933 BasicCegarLoop]: 16687 mSDtfsCounter, 16660 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16660 SdHoareTripleChecker+Valid, 16687 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:42,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16660 Valid, 16687 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:54:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44713 states. [2021-11-23 00:54:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44713 to 44713. [2021-11-23 00:54:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44713 states, 44118 states have (on average 1.4533750396663494) internal successors, (64120), 44207 states have internal predecessors, (64120), 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) [2021-11-23 00:54:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44713 states to 44713 states and 64940 transitions. [2021-11-23 00:54:43,767 INFO L78 Accepts]: Start accepts. Automaton has 44713 states and 64940 transitions. Word has length 30 [2021-11-23 00:54:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:43,767 INFO L470 AbstractCegarLoop]: Abstraction has 44713 states and 64940 transitions. [2021-11-23 00:54:43,767 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) [2021-11-23 00:54:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 44713 states and 64940 transitions. [2021-11-23 00:54:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 00:54:43,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:43,769 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] [2021-11-23 00:54:43,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 00:54:43,983 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 [2021-11-23 00:54:43,983 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)] === [2021-11-23 00:54:43,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 769590461, now seen corresponding path program 1 times [2021-11-23 00:54:43,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:43,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911264804] [2021-11-23 00:54:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:43,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:44,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:44,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911264804] [2021-11-23 00:54:44,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911264804] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:54:44,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239023406] [2021-11-23 00:54:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:44,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:54:44,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:54:44,142 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) [2021-11-23 00:54:44,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 00:54:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:45,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 4881 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:54:45,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:54:45,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:54:45,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239023406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:45,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:54:45,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:54:45,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779246963] [2021-11-23 00:54:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:45,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:45,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:45,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:45,968 INFO L87 Difference]: Start difference. First operand 44713 states and 64940 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) [2021-11-23 00:54:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:46,660 INFO L93 Difference]: Finished difference Result 54885 states and 79562 transitions. [2021-11-23 00:54:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:46,661 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 [2021-11-23 00:54:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:46,772 INFO L225 Difference]: With dead ends: 54885 [2021-11-23 00:54:46,772 INFO L226 Difference]: Without dead ends: 54879 [2021-11-23 00:54:46,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:46,786 INFO L933 BasicCegarLoop]: 16764 mSDtfsCounter, 15993 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15993 SdHoareTripleChecker+Valid, 21085 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:46,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15993 Valid, 21085 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:54:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54879 states. [2021-11-23 00:54:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54879 to 54843. [2021-11-23 00:54:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54843 states, 53923 states have (on average 1.4519963651873968) internal successors, (78296), 54033 states have internal predecessors, (78296), 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) [2021-11-23 00:54:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54843 states to 54843 states and 79532 transitions. [2021-11-23 00:54:47,995 INFO L78 Accepts]: Start accepts. Automaton has 54843 states and 79532 transitions. Word has length 31 [2021-11-23 00:54:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:47,996 INFO L470 AbstractCegarLoop]: Abstraction has 54843 states and 79532 transitions. [2021-11-23 00:54:47,996 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) [2021-11-23 00:54:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 54843 states and 79532 transitions. [2021-11-23 00:54:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 00:54:47,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:47,997 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] [2021-11-23 00:54:48,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 00:54:48,215 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 [2021-11-23 00:54:48,215 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)] === [2021-11-23 00:54:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1912452277, now seen corresponding path program 1 times [2021-11-23 00:54:48,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:48,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467372730] [2021-11-23 00:54:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:48,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:48,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:48,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467372730] [2021-11-23 00:54:48,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467372730] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:54:48,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020658558] [2021-11-23 00:54:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:48,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:54:48,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:54:48,381 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) [2021-11-23 00:54:48,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 00:54:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:50,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 4883 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:54:50,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:54:50,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:54:50,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020658558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:50,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:54:50,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:54:50,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795459446] [2021-11-23 00:54:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:50,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:50,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:50,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:50,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:50,099 INFO L87 Difference]: Start difference. First operand 54843 states and 79532 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) [2021-11-23 00:54:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:50,938 INFO L93 Difference]: Finished difference Result 54843 states and 79532 transitions. [2021-11-23 00:54:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:50,939 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 [2021-11-23 00:54:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:51,059 INFO L225 Difference]: With dead ends: 54843 [2021-11-23 00:54:51,059 INFO L226 Difference]: Without dead ends: 54841 [2021-11-23 00:54:51,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:51,082 INFO L933 BasicCegarLoop]: 16679 mSDtfsCounter, 16650 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16650 SdHoareTripleChecker+Valid, 16679 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:51,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16650 Valid, 16679 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 00:54:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54841 states. [2021-11-23 00:54:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54841 to 54841. [2021-11-23 00:54:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54841 states, 53922 states have (on average 1.4519862022921999) internal successors, (78294), 54031 states have internal predecessors, (78294), 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) [2021-11-23 00:54:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54841 states to 54841 states and 79530 transitions. [2021-11-23 00:54:52,253 INFO L78 Accepts]: Start accepts. Automaton has 54841 states and 79530 transitions. Word has length 32 [2021-11-23 00:54:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:52,254 INFO L470 AbstractCegarLoop]: Abstraction has 54841 states and 79530 transitions. [2021-11-23 00:54:52,254 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) [2021-11-23 00:54:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 54841 states and 79530 transitions. [2021-11-23 00:54:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 00:54:52,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:52,255 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] [2021-11-23 00:54:52,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 00:54:52,483 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 [2021-11-23 00:54:52,483 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)] === [2021-11-23 00:54:52,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:52,483 INFO L85 PathProgramCache]: Analyzing trace with hash 843568776, now seen corresponding path program 1 times [2021-11-23 00:54:52,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:52,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268049794] [2021-11-23 00:54:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:52,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:52,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:52,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268049794] [2021-11-23 00:54:52,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268049794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:54:52,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104711247] [2021-11-23 00:54:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:52,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:54:52,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:54:52,832 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) [2021-11-23 00:54:52,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 00:54:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:54,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 4885 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:54:54,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:54:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:54:54,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:54:54,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104711247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:54:54,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:54:54,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:54:54,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840614882] [2021-11-23 00:54:54,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:54:54,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:54:54,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:54:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:54:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:54,469 INFO L87 Difference]: Start difference. First operand 54841 states and 79530 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) [2021-11-23 00:54:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:54:56,059 INFO L93 Difference]: Finished difference Result 127192 states and 185722 transitions. [2021-11-23 00:54:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:54:56,060 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 [2021-11-23 00:54:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:54:56,261 INFO L225 Difference]: With dead ends: 127192 [2021-11-23 00:54:56,261 INFO L226 Difference]: Without dead ends: 72357 [2021-11-23 00:54:56,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:54:56,336 INFO L933 BasicCegarLoop]: 17524 mSDtfsCounter, 11872 mSDsluCounter, 8163 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11872 SdHoareTripleChecker+Valid, 25687 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:54:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11872 Valid, 25687 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:54:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72357 states. [2021-11-23 00:54:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72357 to 71359. [2021-11-23 00:54:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71359 states, 69876 states have (on average 1.4512708226000344) internal successors, (101409), 69987 states have internal predecessors, (101409), 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) [2021-11-23 00:54:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71359 states to 71359 states and 103797 transitions. [2021-11-23 00:54:58,036 INFO L78 Accepts]: Start accepts. Automaton has 71359 states and 103797 transitions. Word has length 33 [2021-11-23 00:54:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 00:54:58,037 INFO L470 AbstractCegarLoop]: Abstraction has 71359 states and 103797 transitions. [2021-11-23 00:54:58,037 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) [2021-11-23 00:54:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 71359 states and 103797 transitions. [2021-11-23 00:54:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 00:54:58,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 00:54:58,039 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] [2021-11-23 00:54:58,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 00:54:58,266 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 [2021-11-23 00:54:58,266 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)] === [2021-11-23 00:54:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:54:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash 380875510, now seen corresponding path program 1 times [2021-11-23 00:54:58,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 00:54:58,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675016860] [2021-11-23 00:54:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:58,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:54:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:54:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:54:58,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 00:54:58,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675016860] [2021-11-23 00:54:58,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675016860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 00:54:58,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678283859] [2021-11-23 00:54:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 00:54:58,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 00:54:58,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 00:54:58,417 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) [2021-11-23 00:54:58,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 00:55:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:55:00,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 4887 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 00:55:00,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:55:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 00:55:00,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 00:55:00,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678283859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 00:55:00,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 00:55:00,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-23 00:55:00,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007123229] [2021-11-23 00:55:00,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 00:55:00,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 00:55:00,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 00:55:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 00:55:00,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:55:00,356 INFO L87 Difference]: Start difference. First operand 71359 states and 103797 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) [2021-11-23 00:55:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 00:55:03,260 INFO L93 Difference]: Finished difference Result 213792 states and 314938 transitions. [2021-11-23 00:55:03,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 00:55:03,261 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 [2021-11-23 00:55:03,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 00:55:03,675 INFO L225 Difference]: With dead ends: 213792 [2021-11-23 00:55:03,675 INFO L226 Difference]: Without dead ends: 142439 [2021-11-23 00:55:03,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 00:55:03,819 INFO L933 BasicCegarLoop]: 16888 mSDtfsCounter, 16675 mSDsluCounter, 16693 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16675 SdHoareTripleChecker+Valid, 33581 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 00:55:03,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16675 Valid, 33581 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 00:55:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142439 states.