/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:31:56,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:31:56,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:31:56,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:31:56,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:31:56,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:31:56,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:31:56,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:31:56,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:31:56,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:31:56,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:31:56,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:31:56,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:31:56,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:31:56,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:31:56,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:31:56,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:31:56,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:31:56,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:31:56,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:31:56,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:31:56,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:31:56,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:31:56,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:31:56,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 03:31:56,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 03:31:56,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 03:31:56,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 03:31:56,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 03:31:56,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 03:31:56,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 03:31:56,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 03:31:56,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 03:31:56,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 03:31:56,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 03:31:56,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 03:31:56,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 03:31:56,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 03:31:56,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:31:56,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:31:56,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:31:56,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 03:31:56,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:31:56,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:31:56,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:31:56,920 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:31:56,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:31:56,920 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:31:56,920 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:31:56,920 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:31:56,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:31:56,921 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:31:56,921 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:31:56,921 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:31:56,921 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:31:56,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:31:56,922 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:31:56,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:31:56,923 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:31:56,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:31:56,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:31:56,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:31:56,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:31:56,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:31:56,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:31:56,924 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:31:56,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:31:56,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:31:56,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:31:56,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:31:56,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:31:56,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:31:56,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:31:56,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:31:56,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:31:56,926 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:31:56,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:31:56,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:31:56,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:31:56,927 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:31:57,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:31:57,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:31:57,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:31:57,220 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:31:57,220 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:31:57,221 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i [2019-11-24 03:31:57,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b887f9ff0/f01b960775ca4bdba656a3cf0a72b96c/FLAGb74ddedc8 [2019-11-24 03:31:58,063 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:31:58,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i [2019-11-24 03:31:58,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b887f9ff0/f01b960775ca4bdba656a3cf0a72b96c/FLAGb74ddedc8 [2019-11-24 03:31:58,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b887f9ff0/f01b960775ca4bdba656a3cf0a72b96c [2019-11-24 03:31:58,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:31:58,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:31:58,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:31:58,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:31:58,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:31:58,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:31:58" (1/1) ... [2019-11-24 03:31:58,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1faac07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:31:58, skipping insertion in model container [2019-11-24 03:31:58,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:31:58" (1/1) ... [2019-11-24 03:31:58,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:31:58,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:32:00,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:32:00,208 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:32:00,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:32:00,883 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:32:00,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00 WrapperNode [2019-11-24 03:32:00,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:32:00,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:32:00,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:32:00,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:32:00,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:32:01,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:32:01,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:32:01,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:32:01,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... [2019-11-24 03:32:01,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:32:01,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:32:01,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:32:01,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:32:01,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:32:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2019-11-24 03:32:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-11-24 03:32:01,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2019-11-24 03:32:01,855 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2019-11-24 03:32:01,857 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2019-11-24 03:32:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_compat_ioctl [2019-11-24 03:32:01,857 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_compat_ioctl [2019-11-24 03:32:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 03:32:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 03:32:01,857 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_read [2019-11-24 03:32:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_read [2019-11-24 03:32:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure __vfio_group_unset_container [2019-11-24 03:32:01,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __vfio_group_unset_container [2019-11-24 03:32:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_compat_ioctl [2019-11-24 03:32:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_compat_ioctl [2019-11-24 03:32:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_mmap [2019-11-24 03:32:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_mmap [2019-11-24 03:32:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_put [2019-11-24 03:32:01,860 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_put [2019-11-24 03:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_try_dissolve_container [2019-11-24 03:32:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_try_dissolve_container [2019-11-24 03:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_write [2019-11-24 03:32:01,861 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_write [2019-11-24 03:32:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:32:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_fops_unl_ioctl [2019-11-24 03:32:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_fops_unl_ioctl [2019-11-24 03:32:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2019-11-24 03:32:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2019-11-24 03:32:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2019-11-24 03:32:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:32:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:32:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 03:32:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 03:32:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_device_put [2019-11-24 03:32:01,863 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_device_put [2019-11-24 03:32:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put_mutex [2019-11-24 03:32:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put_mutex [2019-11-24 03:32:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 03:32:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_group_put_external_user [2019-11-24 03:32:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_group_put_external_user [2019-11-24 03:32:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_read [2019-11-24 03:32:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_read [2019-11-24 03:32:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 03:32:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_unl_ioctl [2019-11-24 03:32:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_unl_ioctl [2019-11-24 03:32:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2019-11-24 03:32:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2019-11-24 03:32:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:32:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_mmap [2019-11-24 03:32:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_mmap [2019-11-24 03:32:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:32:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-24 03:32:01,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-24 03:32:01,866 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fops_write [2019-11-24 03:32:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fops_write [2019-11-24 03:32:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_ioctl_check_extension [2019-11-24 03:32:01,867 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_ioctl_check_extension [2019-11-24 03:32:01,867 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_container_put [2019-11-24 03:32:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_container_put [2019-11-24 03:32:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2019-11-24 03:32:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2019-11-24 03:32:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 03:32:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_ioctl_set_iommu [2019-11-24 03:32:01,868 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_ioctl_set_iommu [2019-11-24 03:32:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:32:01,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:32:26,839 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:32:26,840 INFO L284 CfgBuilder]: Removed 1416 assume(true) statements. [2019-11-24 03:32:26,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:32:26 BoogieIcfgContainer [2019-11-24 03:32:26,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:32:26,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:32:26,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:32:26,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:32:26,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:31:58" (1/3) ... [2019-11-24 03:32:26,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e624a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:32:26, skipping insertion in model container [2019-11-24 03:32:26,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:32:00" (2/3) ... [2019-11-24 03:32:26,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e624a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:32:26, skipping insertion in model container [2019-11-24 03:32:26,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:32:26" (3/3) ... [2019-11-24 03:32:26,854 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--vfio--vfio.ko-entry_point.cil.out.i [2019-11-24 03:32:26,865 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:32:26,876 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 03:32:26,889 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 03:32:26,927 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:32:26,927 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:32:26,927 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:32:26,928 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:32:26,928 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:32:26,928 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:32:26,929 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:32:26,929 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:32:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states. [2019-11-24 03:32:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-24 03:32:26,987 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:26,988 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:26,989 INFO L410 AbstractCegarLoop]: === Iteration 1 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:26,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1431328815, now seen corresponding path program 1 times [2019-11-24 03:32:27,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:27,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423289712] [2019-11-24 03:32:27,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:32:27,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423289712] [2019-11-24 03:32:27,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:27,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:27,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101345010] [2019-11-24 03:32:27,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:27,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:27,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:27,966 INFO L87 Difference]: Start difference. First operand 660 states. Second operand 3 states. [2019-11-24 03:32:29,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:29,836 INFO L93 Difference]: Finished difference Result 1909 states and 3136 transitions. [2019-11-24 03:32:29,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:29,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-11-24 03:32:29,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:29,875 INFO L225 Difference]: With dead ends: 1909 [2019-11-24 03:32:29,876 INFO L226 Difference]: Without dead ends: 1264 [2019-11-24 03:32:29,888 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2019-11-24 03:32:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1254. [2019-11-24 03:32:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2019-11-24 03:32:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1960 transitions. [2019-11-24 03:32:30,256 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1960 transitions. Word has length 35 [2019-11-24 03:32:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:30,257 INFO L462 AbstractCegarLoop]: Abstraction has 1254 states and 1960 transitions. [2019-11-24 03:32:30,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1960 transitions. [2019-11-24 03:32:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-24 03:32:30,263 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:30,264 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:30,264 INFO L410 AbstractCegarLoop]: === Iteration 2 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:30,265 INFO L82 PathProgramCache]: Analyzing trace with hash -743489840, now seen corresponding path program 1 times [2019-11-24 03:32:30,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:30,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238242106] [2019-11-24 03:32:30,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:32:30,580 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238242106] [2019-11-24 03:32:30,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:30,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:32:30,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416417640] [2019-11-24 03:32:30,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:30,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:30,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:30,584 INFO L87 Difference]: Start difference. First operand 1254 states and 1960 transitions. Second operand 3 states. [2019-11-24 03:32:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:30,741 INFO L93 Difference]: Finished difference Result 3624 states and 5821 transitions. [2019-11-24 03:32:30,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:30,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-24 03:32:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:30,763 INFO L225 Difference]: With dead ends: 3624 [2019-11-24 03:32:30,763 INFO L226 Difference]: Without dead ends: 2396 [2019-11-24 03:32:30,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:30,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2019-11-24 03:32:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2393. [2019-11-24 03:32:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-11-24 03:32:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 3769 transitions. [2019-11-24 03:32:30,896 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 3769 transitions. Word has length 41 [2019-11-24 03:32:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:30,897 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 3769 transitions. [2019-11-24 03:32:30,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 3769 transitions. [2019-11-24 03:32:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-24 03:32:30,906 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:30,906 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:30,907 INFO L410 AbstractCegarLoop]: === Iteration 3 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:30,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:30,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1865822451, now seen corresponding path program 1 times [2019-11-24 03:32:30,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:30,908 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868080856] [2019-11-24 03:32:30,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:32:31,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868080856] [2019-11-24 03:32:31,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:31,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:31,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137403627] [2019-11-24 03:32:31,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:31,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:31,200 INFO L87 Difference]: Start difference. First operand 2393 states and 3769 transitions. Second operand 3 states. [2019-11-24 03:32:31,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:31,468 INFO L93 Difference]: Finished difference Result 4227 states and 6577 transitions. [2019-11-24 03:32:31,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:31,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-11-24 03:32:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:31,487 INFO L225 Difference]: With dead ends: 4227 [2019-11-24 03:32:31,487 INFO L226 Difference]: Without dead ends: 1861 [2019-11-24 03:32:31,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2019-11-24 03:32:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1861. [2019-11-24 03:32:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2019-11-24 03:32:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2857 transitions. [2019-11-24 03:32:31,607 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2857 transitions. Word has length 58 [2019-11-24 03:32:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:31,608 INFO L462 AbstractCegarLoop]: Abstraction has 1861 states and 2857 transitions. [2019-11-24 03:32:31,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2857 transitions. [2019-11-24 03:32:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-24 03:32:31,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:31,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:31,618 INFO L410 AbstractCegarLoop]: === Iteration 4 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash -844555858, now seen corresponding path program 1 times [2019-11-24 03:32:31,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:31,619 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322401118] [2019-11-24 03:32:31,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:32:31,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322401118] [2019-11-24 03:32:31,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:31,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:31,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142920106] [2019-11-24 03:32:31,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:31,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:31,964 INFO L87 Difference]: Start difference. First operand 1861 states and 2857 transitions. Second operand 3 states. [2019-11-24 03:32:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:32,371 INFO L93 Difference]: Finished difference Result 4467 states and 6806 transitions. [2019-11-24 03:32:32,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:32,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2019-11-24 03:32:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:32,407 INFO L225 Difference]: With dead ends: 4467 [2019-11-24 03:32:32,407 INFO L226 Difference]: Without dead ends: 2633 [2019-11-24 03:32:32,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2019-11-24 03:32:32,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2619. [2019-11-24 03:32:32,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2019-11-24 03:32:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3990 transitions. [2019-11-24 03:32:32,572 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3990 transitions. Word has length 61 [2019-11-24 03:32:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:32,573 INFO L462 AbstractCegarLoop]: Abstraction has 2619 states and 3990 transitions. [2019-11-24 03:32:32,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3990 transitions. [2019-11-24 03:32:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-24 03:32:32,580 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:32,580 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:32,580 INFO L410 AbstractCegarLoop]: === Iteration 5 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:32,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1522633512, now seen corresponding path program 1 times [2019-11-24 03:32:32,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:32,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472039479] [2019-11-24 03:32:32,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:32:32,919 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472039479] [2019-11-24 03:32:32,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:32,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:32,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522661725] [2019-11-24 03:32:32,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:32,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:32,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:32,923 INFO L87 Difference]: Start difference. First operand 2619 states and 3990 transitions. Second operand 3 states. [2019-11-24 03:32:33,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:33,285 INFO L93 Difference]: Finished difference Result 3540 states and 5383 transitions. [2019-11-24 03:32:33,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:33,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2019-11-24 03:32:33,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:33,294 INFO L225 Difference]: With dead ends: 3540 [2019-11-24 03:32:33,294 INFO L226 Difference]: Without dead ends: 948 [2019-11-24 03:32:33,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2019-11-24 03:32:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 948. [2019-11-24 03:32:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2019-11-24 03:32:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1441 transitions. [2019-11-24 03:32:33,356 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1441 transitions. Word has length 63 [2019-11-24 03:32:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:33,357 INFO L462 AbstractCegarLoop]: Abstraction has 948 states and 1441 transitions. [2019-11-24 03:32:33,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1441 transitions. [2019-11-24 03:32:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-24 03:32:33,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:33,361 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:33,361 INFO L410 AbstractCegarLoop]: === Iteration 6 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -546848572, now seen corresponding path program 1 times [2019-11-24 03:32:33,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:33,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618008205] [2019-11-24 03:32:33,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 03:32:36,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618008205] [2019-11-24 03:32:36,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:36,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:36,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726404354] [2019-11-24 03:32:36,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:36,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:36,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:36,481 INFO L87 Difference]: Start difference. First operand 948 states and 1441 transitions. Second operand 3 states. [2019-11-24 03:32:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:36,686 INFO L93 Difference]: Finished difference Result 1908 states and 2907 transitions. [2019-11-24 03:32:36,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:36,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2019-11-24 03:32:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:36,694 INFO L225 Difference]: With dead ends: 1908 [2019-11-24 03:32:36,694 INFO L226 Difference]: Without dead ends: 962 [2019-11-24 03:32:36,700 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-11-24 03:32:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2019-11-24 03:32:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2019-11-24 03:32:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1455 transitions. [2019-11-24 03:32:36,750 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1455 transitions. Word has length 73 [2019-11-24 03:32:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:36,750 INFO L462 AbstractCegarLoop]: Abstraction has 962 states and 1455 transitions. [2019-11-24 03:32:36,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1455 transitions. [2019-11-24 03:32:36,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-24 03:32:36,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:36,753 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:36,753 INFO L410 AbstractCegarLoop]: === Iteration 7 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:36,754 INFO L82 PathProgramCache]: Analyzing trace with hash 161917776, now seen corresponding path program 1 times [2019-11-24 03:32:36,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:36,755 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155951177] [2019-11-24 03:32:36,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 03:32:40,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155951177] [2019-11-24 03:32:40,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:40,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:40,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632562295] [2019-11-24 03:32:40,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:40,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:40,104 INFO L87 Difference]: Start difference. First operand 962 states and 1455 transitions. Second operand 3 states. [2019-11-24 03:32:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:42,157 INFO L93 Difference]: Finished difference Result 1924 states and 2912 transitions. [2019-11-24 03:32:42,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:42,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-11-24 03:32:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:42,164 INFO L225 Difference]: With dead ends: 1924 [2019-11-24 03:32:42,165 INFO L226 Difference]: Without dead ends: 966 [2019-11-24 03:32:42,170 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2019-11-24 03:32:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2019-11-24 03:32:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2019-11-24 03:32:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1459 transitions. [2019-11-24 03:32:42,218 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1459 transitions. Word has length 81 [2019-11-24 03:32:42,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:42,218 INFO L462 AbstractCegarLoop]: Abstraction has 966 states and 1459 transitions. [2019-11-24 03:32:42,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1459 transitions. [2019-11-24 03:32:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-24 03:32:42,222 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:42,222 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:42,223 INFO L410 AbstractCegarLoop]: === Iteration 8 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:42,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:42,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1114438788, now seen corresponding path program 1 times [2019-11-24 03:32:42,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:42,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192467720] [2019-11-24 03:32:42,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-24 03:32:44,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192467720] [2019-11-24 03:32:44,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:32:44,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:32:44,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781521056] [2019-11-24 03:32:44,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:32:44,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:44,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:32:44,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:44,670 INFO L87 Difference]: Start difference. First operand 966 states and 1459 transitions. Second operand 3 states. [2019-11-24 03:32:44,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:44,866 INFO L93 Difference]: Finished difference Result 1926 states and 2917 transitions. [2019-11-24 03:32:44,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:32:44,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-11-24 03:32:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:44,875 INFO L225 Difference]: With dead ends: 1926 [2019-11-24 03:32:44,876 INFO L226 Difference]: Without dead ends: 982 [2019-11-24 03:32:44,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:32:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-11-24 03:32:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2019-11-24 03:32:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2019-11-24 03:32:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1475 transitions. [2019-11-24 03:32:44,940 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1475 transitions. Word has length 85 [2019-11-24 03:32:44,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:44,949 INFO L462 AbstractCegarLoop]: Abstraction has 982 states and 1475 transitions. [2019-11-24 03:32:44,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:32:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1475 transitions. [2019-11-24 03:32:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-24 03:32:44,957 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:44,957 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:44,958 INFO L410 AbstractCegarLoop]: === Iteration 9 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash 581098966, now seen corresponding path program 1 times [2019-11-24 03:32:44,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:44,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37526698] [2019-11-24 03:32:44,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-24 03:32:48,324 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37526698] [2019-11-24 03:32:48,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807111375] [2019-11-24 03:32:48,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:32:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:50,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 3793 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-24 03:32:50,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:32:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-24 03:32:50,472 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:32:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-24 03:32:50,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 03:32:50,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 6 [2019-11-24 03:32:50,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728182500] [2019-11-24 03:32:50,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:32:50,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:32:50,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:32:50,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 03:32:50,538 INFO L87 Difference]: Start difference. First operand 982 states and 1475 transitions. Second operand 4 states. [2019-11-24 03:32:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:32:52,888 INFO L93 Difference]: Finished difference Result 1906 states and 2859 transitions. [2019-11-24 03:32:52,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:32:52,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2019-11-24 03:32:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:32:52,897 INFO L225 Difference]: With dead ends: 1906 [2019-11-24 03:32:52,898 INFO L226 Difference]: Without dead ends: 990 [2019-11-24 03:32:52,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-24 03:32:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2019-11-24 03:32:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 984. [2019-11-24 03:32:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-11-24 03:32:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1476 transitions. [2019-11-24 03:32:52,961 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1476 transitions. Word has length 101 [2019-11-24 03:32:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:32:52,962 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1476 transitions. [2019-11-24 03:32:52,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:32:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1476 transitions. [2019-11-24 03:32:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-24 03:32:52,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:32:52,965 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:32:53,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:32:53,166 INFO L410 AbstractCegarLoop]: === Iteration 10 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:32:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:32:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash 961362926, now seen corresponding path program 1 times [2019-11-24 03:32:53,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:32:53,168 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276014069] [2019-11-24 03:32:53,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:32:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:32:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-24 03:32:58,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276014069] [2019-11-24 03:32:58,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274115991] [2019-11-24 03:32:58,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:33:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:33:00,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 4047 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-24 03:33:00,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:33:00,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:33:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-24 03:33:00,463 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:33:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-24 03:33:00,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 03:33:00,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [4] total 8 [2019-11-24 03:33:00,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370213282] [2019-11-24 03:33:00,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 03:33:00,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:33:00,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 03:33:00,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 03:33:00,516 INFO L87 Difference]: Start difference. First operand 984 states and 1476 transitions. Second operand 6 states. [2019-11-24 03:33:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:33:00,696 INFO L93 Difference]: Finished difference Result 1910 states and 2992 transitions. [2019-11-24 03:33:00,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:33:00,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-11-24 03:33:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:33:00,707 INFO L225 Difference]: With dead ends: 1910 [2019-11-24 03:33:00,708 INFO L226 Difference]: Without dead ends: 994 [2019-11-24 03:33:00,718 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-24 03:33:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-11-24 03:33:00,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 988. [2019-11-24 03:33:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-11-24 03:33:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1480 transitions. [2019-11-24 03:33:00,777 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1480 transitions. Word has length 108 [2019-11-24 03:33:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:33:00,777 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1480 transitions. [2019-11-24 03:33:00,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 03:33:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1480 transitions. [2019-11-24 03:33:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-24 03:33:00,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:33:00,790 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:33:00,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:33:00,991 INFO L410 AbstractCegarLoop]: === Iteration 11 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:33:00,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:33:00,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1964101664, now seen corresponding path program 1 times [2019-11-24 03:33:00,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:33:00,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536775633] [2019-11-24 03:33:00,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:33:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:33:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-24 03:33:01,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536775633] [2019-11-24 03:33:01,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:33:01,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:33:01,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732144664] [2019-11-24 03:33:01,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:33:01,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:33:01,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:33:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:33:01,368 INFO L87 Difference]: Start difference. First operand 988 states and 1480 transitions. Second operand 3 states. [2019-11-24 03:33:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:33:03,648 INFO L93 Difference]: Finished difference Result 2366 states and 3524 transitions. [2019-11-24 03:33:03,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:33:03,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-11-24 03:33:03,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:33:03,661 INFO L225 Difference]: With dead ends: 2366 [2019-11-24 03:33:03,662 INFO L226 Difference]: Without dead ends: 1446 [2019-11-24 03:33:03,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:33:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2019-11-24 03:33:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1440. [2019-11-24 03:33:03,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2019-11-24 03:33:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2122 transitions. [2019-11-24 03:33:03,743 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2122 transitions. Word has length 112 [2019-11-24 03:33:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:33:03,744 INFO L462 AbstractCegarLoop]: Abstraction has 1440 states and 2122 transitions. [2019-11-24 03:33:03,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:33:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2122 transitions. [2019-11-24 03:33:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-24 03:33:03,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:33:03,749 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:33:03,749 INFO L410 AbstractCegarLoop]: === Iteration 12 === [vfio_ioctl_set_iommuErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr1ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_set_iommuErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, vfio_ioctl_check_extensionErr0ASSERT_VIOLATIONERROR_FUNCTION, __vfio_group_unset_containerErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:33:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:33:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1744711212, now seen corresponding path program 1 times [2019-11-24 03:33:03,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:33:03,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626727500] [2019-11-24 03:33:03,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY