./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 18:27:25,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:27:25,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:27:25,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:27:25,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:27:25,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:27:25,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:27:25,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:27:25,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:27:25,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:27:25,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:27:25,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:27:25,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:27:25,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:27:25,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:27:25,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:27:25,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:27:25,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:27:25,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:27:25,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:27:25,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:27:25,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:27:25,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:27:25,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:27:25,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:27:25,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:27:25,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:27:25,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:27:25,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:27:25,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:27:25,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:27:25,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:27:25,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:27:25,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:27:25,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:27:25,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:27:25,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:27:25,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:27:25,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:27:25,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:27:25,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:27:25,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:27:25,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:27:25,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:27:25,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:27:25,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:27:25,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:27:25,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:27:25,195 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:27:25,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:27:25,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:27:25,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:27:25,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:27:25,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:27:25,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:27:25,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:27:25,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:27:25,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:27:25,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:27:25,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:27:25,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:27:25,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:27:25,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:27:25,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:27:25,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:27:25,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:27:25,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:27:25,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:27:25,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:27:25,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:27:25,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:27:25,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-11-05 18:27:25,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:27:25,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:27:25,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:27:25,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:27:25,558 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:27:25,559 INFO L432 ainManager$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 [2021-11-05 18:27:25,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87abb83fd/5a72b078cc6c4817b7faac2b740a9101/FLAGdbea06994 [2021-11-05 18:27:26,571 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:27:26,572 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 [2021-11-05 18:27:26,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87abb83fd/5a72b078cc6c4817b7faac2b740a9101/FLAGdbea06994 [2021-11-05 18:27:26,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87abb83fd/5a72b078cc6c4817b7faac2b740a9101 [2021-11-05 18:27:26,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:27:26,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:27:26,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:27:26,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:27:26,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:27:26,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:27:26" (1/1) ... [2021-11-05 18:27:26,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2174fdb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:26, skipping insertion in model container [2021-11-05 18:27:26,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:27:26" (1/1) ... [2021-11-05 18:27:26,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:27:27,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:27:31,554 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-05 18:27:32,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:27:32,153 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:27:32,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-11-05 18:27:32,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:27:33,058 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:27:33,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33 WrapperNode [2021-11-05 18:27:33,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:27:33,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:27:33,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:27:33,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:27:33,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:33,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:34,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:27:34,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:27:34,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:27:34,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:27:34,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:34,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:35,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:35,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:36,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:36,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:36,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:37,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:27:37,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:27:37,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:27:37,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:27:37,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (1/1) ... [2021-11-05 18:27:37,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:27:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:27:37,353 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) [2021-11-05 18:27:37,371 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 [2021-11-05 18:27:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-11-05 18:27:37,390 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-11-05 18:27:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-11-05 18:27:37,391 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-11-05 18:27:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-11-05 18:27:37,391 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-11-05 18:27:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-11-05 18:27:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-11-05 18:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-05 18:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-11-05 18:27:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-11-05 18:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:27:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-11-05 18:27:37,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-11-05 18:27:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:27:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-11-05 18:27:37,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-11-05 18:27:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:27:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:27:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-11-05 18:27:37,394 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-11-05 18:27:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-05 18:27:37,394 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-05 18:27:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-11-05 18:27:37,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-11-05 18:27:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:27:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-11-05 18:27:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-11-05 18:27:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:27:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 18:27:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-11-05 18:27:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-11-05 18:27:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:27:37,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:27:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-05 18:27:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-05 18:27:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-11-05 18:27:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-11-05 18:27:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:27:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:27:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-05 18:27:37,397 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-05 18:27:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:27:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:27:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-11-05 18:27:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-11-05 18:27:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-11-05 18:27:37,398 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-11-05 18:27:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-11-05 18:27:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-11-05 18:27:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:27:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:27:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-11-05 18:27:37,399 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-11-05 18:27:37,399 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-11-05 18:27:37,400 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-11-05 18:27:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:27:37,400 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-11-05 18:27:37,400 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-11-05 18:27:37,401 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-11-05 18:27:37,401 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-11-05 18:27:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-11-05 18:27:37,402 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-11-05 18:27:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:27:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-11-05 18:27:37,403 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-11-05 18:27:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-11-05 18:27:37,403 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-11-05 18:27:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-11-05 18:27:37,403 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-11-05 18:27:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-11-05 18:27:37,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-11-05 18:27:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:27:37,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:27:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:27:37,405 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-11-05 18:27:37,405 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-11-05 18:28:44,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:28:44,761 INFO L299 CfgBuilder]: Removed 8979 assume(true) statements. [2021-11-05 18:28:44,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:28:44 BoogieIcfgContainer [2021-11-05 18:28:44,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:28:44,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:28:44,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:28:44,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:28:44,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:27:26" (1/3) ... [2021-11-05 18:28:44,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c5cb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:28:44, skipping insertion in model container [2021-11-05 18:28:44,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:27:33" (2/3) ... [2021-11-05 18:28:44,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c5cb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:28:44, skipping insertion in model container [2021-11-05 18:28:44,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:28:44" (3/3) ... [2021-11-05 18:28:44,781 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 [2021-11-05 18:28:44,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:28:44,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-11-05 18:28:44,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:28:44,877 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 [2021-11-05 18:28:44,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-11-05 18:28:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 10724 states, 10522 states have (on average 1.5072229614141799) internal successors, (15859), 10595 states have internal predecessors, (15859), 104 states have call successors, (104), 30 states have call predecessors, (104), 30 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-05 18:28:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 18:28:45,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:28:45,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:28:45,034 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)] === [2021-11-05 18:28:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:28:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1959735566, now seen corresponding path program 1 times [2021-11-05 18:28:45,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:28:45,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497693150] [2021-11-05 18:28:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:28:45,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:28:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:28:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:28:45,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:28:45,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497693150] [2021-11-05 18:28:45,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497693150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:28:45,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:28:45,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:28:45,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284182484] [2021-11-05 18:28:45,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:28:45,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:28:45,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:28:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:28:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:28:46,037 INFO L87 Difference]: Start difference. First operand has 10724 states, 10522 states have (on average 1.5072229614141799) internal successors, (15859), 10595 states have internal predecessors, (15859), 104 states have call successors, (104), 30 states have call predecessors, (104), 30 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:48,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:28:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:28:49,274 INFO L93 Difference]: Finished difference Result 31874 states and 47995 transitions. [2021-11-05 18:28:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:28:49,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-05 18:28:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:28:49,396 INFO L225 Difference]: With dead ends: 31874 [2021-11-05 18:28:49,396 INFO L226 Difference]: Without dead ends: 21144 [2021-11-05 18:28:49,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:28:49,444 INFO L933 BasicCegarLoop]: 15936 mSDtfsCounter, 15744 mSDsluCounter, 15519 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2175.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15744 SdHoareTripleChecker+Valid, 31455 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 76.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2338.17ms IncrementalHoareTripleChecker+Time [2021-11-05 18:28:49,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15744 Valid, 31455 Invalid, 15 Unknown, 0 Unchecked, 76.66ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2338.17ms Time] [2021-11-05 18:28:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21144 states. [2021-11-05 18:28:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21144 to 21028. [2021-11-05 18:28:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21028 states, 20695 states have (on average 1.4880405895143753) internal successors, (30795), 20773 states have internal predecessors, (30795), 206 states have call successors, (206), 60 states have call predecessors, (206), 60 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-05 18:28:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 31207 transitions. [2021-11-05 18:28:50,161 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 31207 transitions. Word has length 24 [2021-11-05 18:28:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:28:50,162 INFO L470 AbstractCegarLoop]: Abstraction has 21028 states and 31207 transitions. [2021-11-05 18:28:50,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 31207 transitions. [2021-11-05 18:28:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-05 18:28:50,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:28:50,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:28:50,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:28:50,170 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)] === [2021-11-05 18:28:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:28:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash 801400433, now seen corresponding path program 1 times [2021-11-05 18:28:50,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:28:50,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708335060] [2021-11-05 18:28:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:28:50,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:28:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:28:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:28:50,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:28:50,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708335060] [2021-11-05 18:28:50,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708335060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:28:50,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:28:50,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:28:50,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372297260] [2021-11-05 18:28:50,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:28:50,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:28:50,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:28:50,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:28:50,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:28:50,637 INFO L87 Difference]: Start difference. First operand 21028 states and 31207 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:28:51,275 INFO L93 Difference]: Finished difference Result 42053 states and 62412 transitions. [2021-11-05 18:28:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:28:51,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-05 18:28:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:28:51,367 INFO L225 Difference]: With dead ends: 42053 [2021-11-05 18:28:51,368 INFO L226 Difference]: Without dead ends: 21031 [2021-11-05 18:28:51,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:28:51,417 INFO L933 BasicCegarLoop]: 15822 mSDtfsCounter, 2 mSDsluCounter, 15820 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31642 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.60ms IncrementalHoareTripleChecker+Time [2021-11-05 18:28:51,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 31642 Invalid, 7 Unknown, 0 Unchecked, 39.53ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 20.60ms Time] [2021-11-05 18:28:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21031 states. [2021-11-05 18:28:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21031 to 21029. [2021-11-05 18:28:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21029 states, 20696 states have (on average 1.4880170081175106) internal successors, (30796), 20774 states have internal predecessors, (30796), 206 states have call successors, (206), 60 states have call predecessors, (206), 60 states have return successors, (206), 200 states have call predecessors, (206), 206 states have call successors, (206) [2021-11-05 18:28:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21029 states to 21029 states and 31208 transitions. [2021-11-05 18:28:52,059 INFO L78 Accepts]: Start accepts. Automaton has 21029 states and 31208 transitions. Word has length 25 [2021-11-05 18:28:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:28:52,060 INFO L470 AbstractCegarLoop]: Abstraction has 21029 states and 31208 transitions. [2021-11-05 18:28:52,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 21029 states and 31208 transitions. [2021-11-05 18:28:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 18:28:52,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:28:52,061 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] [2021-11-05 18:28:52,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:28:52,062 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)] === [2021-11-05 18:28:52,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:28:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2094824587, now seen corresponding path program 1 times [2021-11-05 18:28:52,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:28:52,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057028847] [2021-11-05 18:28:52,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:28:52,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:28:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:28:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:28:52,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:28:52,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057028847] [2021-11-05 18:28:52,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057028847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:28:52,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:28:52,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:28:52,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820723410] [2021-11-05 18:28:52,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:28:52,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:28:52,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:28:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:28:52,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:28:52,488 INFO L87 Difference]: Start difference. First operand 21029 states and 31208 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:28:53,689 INFO L93 Difference]: Finished difference Result 62543 states and 92902 transitions. [2021-11-05 18:28:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:28:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-05 18:28:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:28:53,829 INFO L225 Difference]: With dead ends: 62543 [2021-11-05 18:28:53,830 INFO L226 Difference]: Without dead ends: 41520 [2021-11-05 18:28:53,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:28:53,906 INFO L933 BasicCegarLoop]: 15928 mSDtfsCounter, 15450 mSDsluCounter, 15806 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15450 SdHoareTripleChecker+Valid, 31734 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.47ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.59ms IncrementalHoareTripleChecker+Time [2021-11-05 18:28:53,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15450 Valid, 31734 Invalid, 16 Unknown, 0 Unchecked, 52.47ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 202.59ms Time] [2021-11-05 18:28:54,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41520 states. [2021-11-05 18:28:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41520 to 41358. [2021-11-05 18:28:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41358 states, 40761 states have (on average 1.4907632295576654) internal successors, (60765), 40852 states have internal predecessors, (60765), 410 states have call successors, (410), 120 states have call predecessors, (410), 120 states have return successors, (410), 397 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-05 18:28:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41358 states to 41358 states and 61585 transitions. [2021-11-05 18:28:55,165 INFO L78 Accepts]: Start accepts. Automaton has 41358 states and 61585 transitions. Word has length 29 [2021-11-05 18:28:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:28:55,165 INFO L470 AbstractCegarLoop]: Abstraction has 41358 states and 61585 transitions. [2021-11-05 18:28:55,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 41358 states and 61585 transitions. [2021-11-05 18:28:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 18:28:55,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:28:55,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 18:28:55,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:28:55,172 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)] === [2021-11-05 18:28:55,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:28:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1907895602, now seen corresponding path program 1 times [2021-11-05 18:28:55,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:28:55,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933528523] [2021-11-05 18:28:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:28:55,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:28:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:28:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:28:55,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:28:55,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933528523] [2021-11-05 18:28:55,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933528523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:28:55,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912628284] [2021-11-05 18:28:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:28:55,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:28:55,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:28:55,615 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) [2021-11-05 18:28:55,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 18:28:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:28:58,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 5272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:28:58,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:28:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:28:58,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:28:58,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912628284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:28:58,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:28:58,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:28:58,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794319333] [2021-11-05 18:28:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:28:58,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:28:58,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:28:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:28:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:28:58,960 INFO L87 Difference]: Start difference. First operand 41358 states and 61585 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:28:59,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:28:59,532 INFO L93 Difference]: Finished difference Result 41358 states and 61585 transitions. [2021-11-05 18:28:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:28:59,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-05 18:28:59,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:28:59,655 INFO L225 Difference]: With dead ends: 41358 [2021-11-05 18:28:59,656 INFO L226 Difference]: Without dead ends: 41356 [2021-11-05 18:28:59,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.95ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:28:59,677 INFO L933 BasicCegarLoop]: 15822 mSDtfsCounter, 15797 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15797 SdHoareTripleChecker+Valid, 15822 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:28:59,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15797 Valid, 15822 Invalid, 1 Unknown, 0 Unchecked, 23.54ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 7.00ms Time] [2021-11-05 18:28:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41356 states. [2021-11-05 18:29:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41356 to 41356. [2021-11-05 18:29:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41356 states, 40760 states have (on average 1.4907507360157017) internal successors, (60763), 40850 states have internal predecessors, (60763), 410 states have call successors, (410), 120 states have call predecessors, (410), 120 states have return successors, (410), 397 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-05 18:29:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41356 states to 41356 states and 61583 transitions. [2021-11-05 18:29:00,734 INFO L78 Accepts]: Start accepts. Automaton has 41356 states and 61583 transitions. Word has length 28 [2021-11-05 18:29:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:29:00,734 INFO L470 AbstractCegarLoop]: Abstraction has 41356 states and 61583 transitions. [2021-11-05 18:29:00,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:29:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 41356 states and 61583 transitions. [2021-11-05 18:29:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-05 18:29:00,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:29:00,735 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] [2021-11-05 18:29:00,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 18:29:00,947 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 [2021-11-05 18:29:00,948 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)] === [2021-11-05 18:29:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:29:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash 984823757, now seen corresponding path program 1 times [2021-11-05 18:29:00,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:29:00,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261417343] [2021-11-05 18:29:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:00,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:29:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:29:01,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:29:01,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261417343] [2021-11-05 18:29:01,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261417343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:29:01,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792460468] [2021-11-05 18:29:01,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:01,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:29:01,375 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) [2021-11-05 18:29:01,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 18:29:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:04,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 5274 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:29:04,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:29:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:29:04,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:29:04,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792460468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:29:04,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:29:04,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:29:04,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986660739] [2021-11-05 18:29:04,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:29:04,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:29:04,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:29:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:29:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:04,291 INFO L87 Difference]: Start difference. First operand 41356 states and 61583 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:29:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:29:04,836 INFO L93 Difference]: Finished difference Result 41356 states and 61583 transitions. [2021-11-05 18:29:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:29:04,837 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 [2021-11-05 18:29:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:29:04,955 INFO L225 Difference]: With dead ends: 41356 [2021-11-05 18:29:04,955 INFO L226 Difference]: Without dead ends: 41354 [2021-11-05 18:29:04,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.16ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:04,979 INFO L933 BasicCegarLoop]: 15820 mSDtfsCounter, 15794 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15794 SdHoareTripleChecker+Valid, 15820 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.49ms IncrementalHoareTripleChecker+Time [2021-11-05 18:29:04,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15794 Valid, 15820 Invalid, 1 Unknown, 0 Unchecked, 19.62ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.49ms Time] [2021-11-05 18:29:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41354 states. [2021-11-05 18:29:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41354 to 41354. [2021-11-05 18:29:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41354 states, 40759 states have (on average 1.4907382418606934) internal successors, (60761), 40848 states have internal predecessors, (60761), 410 states have call successors, (410), 120 states have call predecessors, (410), 120 states have return successors, (410), 397 states have call predecessors, (410), 410 states have call successors, (410) [2021-11-05 18:29:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41354 states to 41354 states and 61581 transitions. [2021-11-05 18:29:06,051 INFO L78 Accepts]: Start accepts. Automaton has 41354 states and 61581 transitions. Word has length 29 [2021-11-05 18:29:06,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:29:06,052 INFO L470 AbstractCegarLoop]: Abstraction has 41354 states and 61581 transitions. [2021-11-05 18:29:06,052 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) [2021-11-05 18:29:06,052 INFO L276 IsEmpty]: Start isEmpty. Operand 41354 states and 61581 transitions. [2021-11-05 18:29:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 18:29:06,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:29:06,056 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] [2021-11-05 18:29:06,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 18:29:06,269 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 [2021-11-05 18:29:06,269 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)] === [2021-11-05 18:29:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:29:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 464810680, now seen corresponding path program 1 times [2021-11-05 18:29:06,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:29:06,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544146070] [2021-11-05 18:29:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:06,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:29:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:29:06,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:29:06,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544146070] [2021-11-05 18:29:06,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544146070] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:29:06,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835077338] [2021-11-05 18:29:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:06,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:06,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:29:06,856 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) [2021-11-05 18:29:06,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 18:29:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:09,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 5276 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:29:09,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:29:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:29:09,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:29:09,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835077338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:29:09,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:29:09,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:29:09,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430776170] [2021-11-05 18:29:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:29:09,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:29:09,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:29:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:29:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:09,598 INFO L87 Difference]: Start difference. First operand 41354 states and 61581 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:29:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:29:10,307 INFO L93 Difference]: Finished difference Result 50674 states and 75351 transitions. [2021-11-05 18:29:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:29:10,307 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 [2021-11-05 18:29:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:29:10,445 INFO L225 Difference]: With dead ends: 50674 [2021-11-05 18:29:10,445 INFO L226 Difference]: Without dead ends: 50668 [2021-11-05 18:29:10,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.37ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:10,470 INFO L933 BasicCegarLoop]: 15897 mSDtfsCounter, 15167 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15167 SdHoareTripleChecker+Valid, 19965 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.33ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.83ms IncrementalHoareTripleChecker+Time [2021-11-05 18:29:10,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15167 Valid, 19965 Invalid, 13 Unknown, 0 Unchecked, 24.33ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 16.83ms Time] [2021-11-05 18:29:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50668 states. [2021-11-05 18:29:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50668 to 50632. [2021-11-05 18:29:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50632 states, 49712 states have (on average 1.4902840360476344) internal successors, (74085), 49822 states have internal predecessors, (74085), 618 states have call successors, (618), 240 states have call predecessors, (618), 240 states have return successors, (618), 593 states have call predecessors, (618), 618 states have call successors, (618) [2021-11-05 18:29:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50632 states to 50632 states and 75321 transitions. [2021-11-05 18:29:11,902 INFO L78 Accepts]: Start accepts. Automaton has 50632 states and 75321 transitions. Word has length 30 [2021-11-05 18:29:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:29:11,903 INFO L470 AbstractCegarLoop]: Abstraction has 50632 states and 75321 transitions. [2021-11-05 18:29:11,903 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) [2021-11-05 18:29:11,903 INFO L276 IsEmpty]: Start isEmpty. Operand 50632 states and 75321 transitions. [2021-11-05 18:29:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-05 18:29:11,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:29:11,904 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] [2021-11-05 18:29:11,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 18:29:12,131 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 [2021-11-05 18:29:12,132 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)] === [2021-11-05 18:29:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:29:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1524274487, now seen corresponding path program 1 times [2021-11-05 18:29:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:29:12,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399093364] [2021-11-05 18:29:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:12,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:29:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:29:12,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:29:12,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399093364] [2021-11-05 18:29:12,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399093364] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:29:12,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084113252] [2021-11-05 18:29:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:12,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:12,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:29:12,503 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) [2021-11-05 18:29:12,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 18:29:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:15,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 5278 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:29:15,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:29:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:29:15,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:29:15,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084113252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:29:15,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:29:15,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:29:15,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007000025] [2021-11-05 18:29:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:29:15,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:29:15,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:29:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:29:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:15,605 INFO L87 Difference]: Start difference. First operand 50632 states and 75321 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:29:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:29:16,201 INFO L93 Difference]: Finished difference Result 50632 states and 75321 transitions. [2021-11-05 18:29:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:29:16,201 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 [2021-11-05 18:29:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:29:16,323 INFO L225 Difference]: With dead ends: 50632 [2021-11-05 18:29:16,324 INFO L226 Difference]: Without dead ends: 50630 [2021-11-05 18:29:16,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.41ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:16,355 INFO L933 BasicCegarLoop]: 15812 mSDtfsCounter, 15784 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15784 SdHoareTripleChecker+Valid, 15812 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.44ms IncrementalHoareTripleChecker+Time [2021-11-05 18:29:16,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15784 Valid, 15812 Invalid, 1 Unknown, 0 Unchecked, 15.57ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 2.44ms Time] [2021-11-05 18:29:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50630 states. [2021-11-05 18:29:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50630 to 50630. [2021-11-05 18:29:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50630 states, 49711 states have (on average 1.490273782462634) internal successors, (74083), 49820 states have internal predecessors, (74083), 618 states have call successors, (618), 240 states have call predecessors, (618), 240 states have return successors, (618), 593 states have call predecessors, (618), 618 states have call successors, (618) [2021-11-05 18:29:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50630 states to 50630 states and 75319 transitions. [2021-11-05 18:29:17,708 INFO L78 Accepts]: Start accepts. Automaton has 50630 states and 75319 transitions. Word has length 31 [2021-11-05 18:29:17,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:29:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 50630 states and 75319 transitions. [2021-11-05 18:29:17,709 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) [2021-11-05 18:29:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 50630 states and 75319 transitions. [2021-11-05 18:29:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 18:29:17,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:29:17,710 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] [2021-11-05 18:29:17,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 18:29:17,935 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 [2021-11-05 18:29:17,936 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)] === [2021-11-05 18:29:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:29:17,936 INFO L85 PathProgramCache]: Analyzing trace with hash 7914146, now seen corresponding path program 1 times [2021-11-05 18:29:17,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:29:17,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727359902] [2021-11-05 18:29:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:17,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:29:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:29:18,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:29:18,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727359902] [2021-11-05 18:29:18,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727359902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:29:18,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99962402] [2021-11-05 18:29:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:18,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:18,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:29:18,466 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) [2021-11-05 18:29:18,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 18:29:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:20,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 5280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:29:20,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:29:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:29:21,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:29:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99962402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:29:21,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:29:21,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:29:21,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992360146] [2021-11-05 18:29:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:29:21,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:29:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:29:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:29:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:21,090 INFO L87 Difference]: Start difference. First operand 50630 states and 75319 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:29:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:29:22,384 INFO L93 Difference]: Finished difference Result 117474 states and 176004 transitions. [2021-11-05 18:29:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:29:22,384 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 [2021-11-05 18:29:22,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:29:22,595 INFO L225 Difference]: With dead ends: 117474 [2021-11-05 18:29:22,595 INFO L226 Difference]: Without dead ends: 66850 [2021-11-05 18:29:22,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.86ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:22,718 INFO L933 BasicCegarLoop]: 16640 mSDtfsCounter, 11197 mSDsluCounter, 7810 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11197 SdHoareTripleChecker+Valid, 24450 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.04ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.27ms IncrementalHoareTripleChecker+Time [2021-11-05 18:29:22,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11197 Valid, 24450 Invalid, 127 Unknown, 0 Unchecked, 19.04ms Time], IncrementalHoareTripleChecker [46 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 131.27ms Time] [2021-11-05 18:29:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66850 states. [2021-11-05 18:29:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66850 to 65852. [2021-11-05 18:29:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65852 states, 64369 states have (on average 1.4898786683030651) internal successors, (95902), 64480 states have internal predecessors, (95902), 978 states have call successors, (978), 432 states have call predecessors, (978), 456 states have return successors, (1410), 971 states have call predecessors, (1410), 978 states have call successors, (1410) [2021-11-05 18:29:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65852 states to 65852 states and 98290 transitions. [2021-11-05 18:29:24,606 INFO L78 Accepts]: Start accepts. Automaton has 65852 states and 98290 transitions. Word has length 32 [2021-11-05 18:29:24,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:29:24,606 INFO L470 AbstractCegarLoop]: Abstraction has 65852 states and 98290 transitions. [2021-11-05 18:29:24,606 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) [2021-11-05 18:29:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 65852 states and 98290 transitions. [2021-11-05 18:29:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-05 18:29:24,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:29:24,608 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] [2021-11-05 18:29:24,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 18:29:24,819 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 [2021-11-05 18:29:24,820 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)] === [2021-11-05 18:29:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:29:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash 245383841, now seen corresponding path program 1 times [2021-11-05 18:29:24,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:29:24,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777917774] [2021-11-05 18:29:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:24,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:29:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:29:25,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:29:25,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777917774] [2021-11-05 18:29:25,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777917774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:29:25,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560510119] [2021-11-05 18:29:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:25,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:29:25,124 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) [2021-11-05 18:29:25,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 18:29:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:27,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 5282 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:29:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:29:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:29:27,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:29:27,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560510119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:29:27,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:29:27,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:29:27,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024590072] [2021-11-05 18:29:27,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:29:27,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:29:27,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:29:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:29:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:27,623 INFO L87 Difference]: Start difference. First operand 65852 states and 98290 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 18:29:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:29:30,370 INFO L93 Difference]: Finished difference Result 197335 states and 298481 transitions. [2021-11-05 18:29:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:29:30,371 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 [2021-11-05 18:29:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:29:30,828 INFO L225 Difference]: With dead ends: 197335 [2021-11-05 18:29:30,828 INFO L226 Difference]: Without dead ends: 131489 [2021-11-05 18:29:30,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.47ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:30,973 INFO L933 BasicCegarLoop]: 16018 mSDtfsCounter, 15815 mSDsluCounter, 15832 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15815 SdHoareTripleChecker+Valid, 31850 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.70ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.94ms IncrementalHoareTripleChecker+Time [2021-11-05 18:29:30,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15815 Valid, 31850 Invalid, 63 Unknown, 0 Unchecked, 30.70ms Time], IncrementalHoareTripleChecker [25 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 69.94ms Time] [2021-11-05 18:29:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131489 states. [2021-11-05 18:29:34,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131489 to 131079. [2021-11-05 18:29:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131079 states, 128170 states have (on average 1.4907700709994538) internal successors, (191072), 128354 states have internal predecessors, (191072), 1956 states have call successors, (1956), 864 states have call predecessors, (1956), 904 states have return successors, (4628), 1924 states have call predecessors, (4628), 1956 states have call successors, (4628) [2021-11-05 18:29:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131079 states to 131079 states and 197656 transitions. [2021-11-05 18:29:34,835 INFO L78 Accepts]: Start accepts. Automaton has 131079 states and 197656 transitions. Word has length 33 [2021-11-05 18:29:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:29:34,836 INFO L470 AbstractCegarLoop]: Abstraction has 131079 states and 197656 transitions. [2021-11-05 18:29:34,836 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) [2021-11-05 18:29:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 131079 states and 197656 transitions. [2021-11-05 18:29:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-05 18:29:34,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:29:34,837 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] [2021-11-05 18:29:34,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 18:29:35,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:35,043 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [vmci_guest_remove_deviceErr0ASSERT_VIOLATIONERROR_FUNCTION, vmci_guest_remove_deviceErr1ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~X~$Pointer$~TO~intErr0ASSERT_VIOLATIONERROR_FUNCTION (and 64 more)] === [2021-11-05 18:29:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:29:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash -982990196, now seen corresponding path program 1 times [2021-11-05 18:29:35,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:29:35,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209404552] [2021-11-05 18:29:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:35,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:29:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:29:35,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:29:35,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209404552] [2021-11-05 18:29:35,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209404552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:29:35,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343733461] [2021-11-05 18:29:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:29:35,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:29:35,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:29:35,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 18:29:35,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 18:29:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:29:37,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 5284 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 18:29:37,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:29:37,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 18:29:37,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:29:37,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343733461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:29:37,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:29:37,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-05 18:29:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292041359] [2021-11-05 18:29:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:29:37,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:29:37,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:29:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:29:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:29:37,966 INFO L87 Difference]: Start difference. First operand 131079 states and 197656 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)