./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-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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-08_1a-drivers--media--usb--em28xx--em28xx-dvb.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 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:52:44,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:52:44,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:52:44,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:52:44,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:52:44,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:52:44,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:52:44,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:52:44,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:52:44,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:52:44,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:52:44,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:52:44,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:52:44,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:52:44,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:52:44,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:52:44,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:52:44,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:52:44,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:52:44,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:52:44,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:52:44,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:52:44,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:52:44,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:52:44,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:52:44,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:52:44,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:52:44,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:52:44,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:52:44,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:52:44,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:52:44,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:52:44,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:52:44,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:52:44,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:52:44,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:52:44,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:52:44,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:52:44,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:52:44,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:52:44,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:52:44,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:52:44,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:52:44,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:52:44,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:52:44,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:52:44,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:52:44,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:52:44,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:52:44,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:52:44,857 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:52:44,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:52:44,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:52:44,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:52:44,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:52:44,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:52:44,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:52:44,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:52:44,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:52:44,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:52:44,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:52:44,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:52:44,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:52:44,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:52:44,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:52:44,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:52:44,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:52:44,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:52:44,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:52:44,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:52:44,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:52:44,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:52:44,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:52:44,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2021-12-22 14:52:45,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:52:45,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:52:45,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:52:45,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:52:45,071 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:52:45,072 INFO L432 ainManager$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-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2021-12-22 14:52:45,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71612bc9/6390a5eec4094ab18f06d094e89942ff/FLAGe20be0ce6 [2021-12-22 14:52:45,698 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:52:45,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2021-12-22 14:52:45,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71612bc9/6390a5eec4094ab18f06d094e89942ff/FLAGe20be0ce6 [2021-12-22 14:52:45,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71612bc9/6390a5eec4094ab18f06d094e89942ff [2021-12-22 14:52:45,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:52:45,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:52:45,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:52:45,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:52:45,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:52:45,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:45" (1/1) ... [2021-12-22 14:52:45,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0a3e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:45, skipping insertion in model container [2021-12-22 14:52:45,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:45" (1/1) ... [2021-12-22 14:52:45,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:52:45,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:52:46,340 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-22 14:52:47,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2021-12-22 14:52:47,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:52:47,347 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:52:47,413 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-22 14:52:47,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2021-12-22 14:52:47,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:52:47,756 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:52:47,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47 WrapperNode [2021-12-22 14:52:47,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:52:47,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:52:47,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:52:47,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:52:47,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:47,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:47,937 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2021-12-22 14:52:47,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:52:47,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:52:47,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:52:47,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:52:47,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:47,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:47,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:47,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:48,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:48,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:48,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:48,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:52:48,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:52:48,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:52:48,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:52:48,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (1/1) ... [2021-12-22 14:52:48,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:52:48,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:48,231 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) [2021-12-22 14:52:48,250 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 [2021-12-22 14:52:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-22 14:52:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-22 14:52:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2021-12-22 14:52:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-22 14:52:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-22 14:52:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2021-12-22 14:52:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2021-12-22 14:52:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:52:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:52:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:52:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:52:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:52:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 14:52:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 14:52:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-12-22 14:52:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-12-22 14:52:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-22 14:52:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-22 14:52:48,272 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-22 14:52:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-22 14:52:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2021-12-22 14:52:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2021-12-22 14:52:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2021-12-22 14:52:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2021-12-22 14:52:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2021-12-22 14:52:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2021-12-22 14:52:48,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:52:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:52:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2021-12-22 14:52:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2021-12-22 14:52:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-22 14:52:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-22 14:52:48,274 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2021-12-22 14:52:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2021-12-22 14:52:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2021-12-22 14:52:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2021-12-22 14:52:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-12-22 14:52:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-12-22 14:52:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:52:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:52:48,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2021-12-22 14:52:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2021-12-22 14:52:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:52:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:52:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:52:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:52:48,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:52:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:52:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:52:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2021-12-22 14:52:48,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2021-12-22 14:52:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-22 14:52:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-22 14:52:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:52:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:52:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 14:52:48,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 14:52:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:52:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:52:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-22 14:52:48,280 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-22 14:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2021-12-22 14:52:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2021-12-22 14:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2021-12-22 14:52:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2021-12-22 14:52:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2021-12-22 14:52:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2021-12-22 14:52:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:52:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:52:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2021-12-22 14:52:48,282 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2021-12-22 14:52:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-22 14:52:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-22 14:52:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2021-12-22 14:52:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2021-12-22 14:52:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-12-22 14:52:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-12-22 14:52:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:52:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-22 14:52:48,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-22 14:52:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-22 14:52:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-22 14:52:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2021-12-22 14:52:48,284 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2021-12-22 14:52:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-22 14:52:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2021-12-22 14:52:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2021-12-22 14:52:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2021-12-22 14:52:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2021-12-22 14:52:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2021-12-22 14:52:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2021-12-22 14:52:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:52:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-12-22 14:52:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-12-22 14:52:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:52:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-12-22 14:52:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-12-22 14:52:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-12-22 14:52:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-12-22 14:52:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-22 14:52:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-22 14:52:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 14:52:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 14:52:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-22 14:52:48,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-22 14:52:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:52:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:52:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-22 14:52:48,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-22 14:52:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:52:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:52:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-12-22 14:52:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-12-22 14:52:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:52:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:52:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:52:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-22 14:52:48,876 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:52:48,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:52:49,194 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:53:09,087 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:53:09,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:53:09,099 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-12-22 14:53:09,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:53:09 BoogieIcfgContainer [2021-12-22 14:53:09,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:53:09,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:53:09,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:53:09,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:53:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:52:45" (1/3) ... [2021-12-22 14:53:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83d28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:53:09, skipping insertion in model container [2021-12-22 14:53:09,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:47" (2/3) ... [2021-12-22 14:53:09,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83d28a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:53:09, skipping insertion in model container [2021-12-22 14:53:09,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:53:09" (3/3) ... [2021-12-22 14:53:09,113 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2021-12-22 14:53:09,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:53:09,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:53:09,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:53:09,166 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 [2021-12-22 14:53:09,166 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:53:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) [2021-12-22 14:53:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 14:53:09,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:53:09,220 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] [2021-12-22 14:53:09,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:53:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:53:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2021-12-22 14:53:09,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:53:09,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173930092] [2021-12-22 14:53:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:53:09,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:53:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:53:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:09,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:53:09,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:53:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173930092] [2021-12-22 14:53:09,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173930092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:53:09,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:53:09,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:53:09,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098395455] [2021-12-22 14:53:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:53:09,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:53:09,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:53:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:53:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:53:09,802 INFO L87 Difference]: Start difference. First operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:53:12,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:14,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:17,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:20,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:22,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:27,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:53:28,039 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2021-12-22 14:53:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:53:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-12-22 14:53:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:53:28,067 INFO L225 Difference]: With dead ends: 3120 [2021-12-22 14:53:28,067 INFO L226 Difference]: Without dead ends: 1581 [2021-12-22 14:53:28,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:53:28,085 INFO L933 BasicCegarLoop]: 2299 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:53:28,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 3371 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 705 Invalid, 6 Unknown, 0 Unchecked, 18.0s Time] [2021-12-22 14:53:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-12-22 14:53:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2021-12-22 14:53:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1078 states have (on average 1.3710575139146568) internal successors, (1478), 1124 states have internal predecessors, (1478), 389 states have call successors, (389), 55 states have call predecessors, (389), 54 states have return successors, (387), 386 states have call predecessors, (387), 387 states have call successors, (387) [2021-12-22 14:53:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2021-12-22 14:53:28,238 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2021-12-22 14:53:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:53:28,239 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2021-12-22 14:53:28,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:53:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2021-12-22 14:53:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 14:53:28,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:53:28,242 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] [2021-12-22 14:53:28,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:53:28,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:53:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:53:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2021-12-22 14:53:28,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:53:28,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819221482] [2021-12-22 14:53:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:53:28,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:53:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:53:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:53:28,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:53:28,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819221482] [2021-12-22 14:53:28,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819221482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:53:28,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:53:28,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:53:28,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301020811] [2021-12-22 14:53:28,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:53:28,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:53:28,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:53:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:53:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:53:28,534 INFO L87 Difference]: Start difference. First operand 1522 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:53:33,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:35,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:40,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:42,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:45,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:55,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []