./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 ae007674 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-ae00767 [2021-12-28 04:10:57,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:10:57,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:10:57,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:10:57,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:10:57,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:10:57,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:10:57,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:10:57,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:10:57,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:10:57,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:10:57,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:10:57,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:10:57,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:10:57,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:10:57,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:10:57,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:10:57,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:10:57,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:10:57,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:10:57,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:10:57,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:10:57,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:10:57,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:10:57,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:10:57,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:10:57,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:10:57,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:10:57,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:10:57,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:10:57,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:10:57,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:10:57,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:10:57,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:10:57,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:10:57,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:10:57,924 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:10:57,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:10:57,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:10:57,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:10:57,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:10:57,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:10:57,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:10:57,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:10:57,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:10:57,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:10:57,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:10:57,958 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:10:57,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:10:57,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:10:57,959 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:10:57,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:10:57,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:10:57,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:10:57,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:10:57,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:10:57,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:10:57,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:10:57,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:10:57,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:10:57,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:10:57,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:10:57,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:10:57,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:10:57,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:10:57,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:10:57,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2021-12-28 04:10:58,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:10:58,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:10:58,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:10:58,248 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:10:58,249 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:10:58,250 INFO L432 ainManager$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 [2021-12-28 04:10:58,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5465e968/a6f54c0cc8714a988d5338b91b606626/FLAG4d80b1e49 [2021-12-28 04:10:58,940 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:10:58,941 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 [2021-12-28 04:10:58,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5465e968/a6f54c0cc8714a988d5338b91b606626/FLAG4d80b1e49 [2021-12-28 04:10:59,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5465e968/a6f54c0cc8714a988d5338b91b606626 [2021-12-28 04:10:59,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:10:59,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:10:59,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:10:59,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:10:59,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:10:59,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:10:59" (1/1) ... [2021-12-28 04:10:59,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f03890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:10:59, skipping insertion in model container [2021-12-28 04:10:59,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:10:59" (1/1) ... [2021-12-28 04:10:59,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:10:59,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:10:59,878 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-28 04:11:00,686 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] [2021-12-28 04:11:00,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:11:00,745 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:11:00,823 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-28 04:11:01,154 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] [2021-12-28 04:11:01,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:11:01,209 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:11:01,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01 WrapperNode [2021-12-28 04:11:01,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:11:01,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:11:01,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:11:01,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:11:01,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,486 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2021-12-28 04:11:01,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:11:01,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:11:01,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:11:01,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:11:01,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:11:01,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:11:01,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:11:01,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:11:01,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (1/1) ... [2021-12-28 04:11:01,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:11:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:11:01,720 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) [2021-12-28 04:11:01,723 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 [2021-12-28 04:11:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-28 04:11:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-28 04:11:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2021-12-28 04:11:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-28 04:11:01,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-28 04:11:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2021-12-28 04:11:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2021-12-28 04:11:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-28 04:11:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-28 04:11:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:11:01,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:11:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:11:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:11:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:11:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-12-28 04:11:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-12-28 04:11:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-28 04:11:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-28 04:11:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-28 04:11:01,745 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-28 04:11:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2021-12-28 04:11:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2021-12-28 04:11:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2021-12-28 04:11:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2021-12-28 04:11:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2021-12-28 04:11:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2021-12-28 04:11:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:11:01,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:11:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2021-12-28 04:11:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2021-12-28 04:11:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-28 04:11:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-28 04:11:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2021-12-28 04:11:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2021-12-28 04:11:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2021-12-28 04:11:01,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2021-12-28 04:11:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-12-28 04:11:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-12-28 04:11:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:11:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:11:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2021-12-28 04:11:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2021-12-28 04:11:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:11:01,748 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:11:01,748 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:11:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:11:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:11:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:11:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:11:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2021-12-28 04:11:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2021-12-28 04:11:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-28 04:11:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-28 04:11:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:11:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:11:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:11:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:11:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:11:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:11:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-28 04:11:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-28 04:11:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:11:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2021-12-28 04:11:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2021-12-28 04:11:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:11:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2021-12-28 04:11:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2021-12-28 04:11:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2021-12-28 04:11:01,751 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2021-12-28 04:11:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:11:01,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:11:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2021-12-28 04:11:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2021-12-28 04:11:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-28 04:11:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-28 04:11:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2021-12-28 04:11:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2021-12-28 04:11:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-12-28 04:11:01,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-12-28 04:11:01,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:11:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-28 04:11:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-28 04:11:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-28 04:11:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-28 04:11:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2021-12-28 04:11:01,753 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2021-12-28 04:11:01,753 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-28 04:11:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2021-12-28 04:11:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2021-12-28 04:11:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2021-12-28 04:11:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2021-12-28 04:11:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2021-12-28 04:11:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2021-12-28 04:11:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:11:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-12-28 04:11:01,755 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-12-28 04:11:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:11:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-12-28 04:11:01,755 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-12-28 04:11:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-12-28 04:11:01,755 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-12-28 04:11:01,755 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-28 04:11:01,755 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-28 04:11:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:11:01,756 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:11:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-28 04:11:01,756 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-28 04:11:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 04:11:01,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 04:11:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-28 04:11:01,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-28 04:11:01,756 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 04:11:01,757 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 04:11:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-12-28 04:11:01,757 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-12-28 04:11:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:11:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:11:01,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:11:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:01,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-28 04:11:02,484 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:11:02,486 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:11:02,683 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:11:22,653 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:11:22,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:11:22,677 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-12-28 04:11:22,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:11:22 BoogieIcfgContainer [2021-12-28 04:11:22,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:11:22,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:11:22,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:11:22,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:11:22,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:10:59" (1/3) ... [2021-12-28 04:11:22,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f38fa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:11:22, skipping insertion in model container [2021-12-28 04:11:22,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:11:01" (2/3) ... [2021-12-28 04:11:22,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f38fa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:11:22, skipping insertion in model container [2021-12-28 04:11:22,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:11:22" (3/3) ... [2021-12-28 04:11:22,699 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 [2021-12-28 04:11:22,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:11:22,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:11:22,775 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:11:22,795 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 [2021-12-28 04:11:22,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:11:22,851 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) [2021-12-28 04:11:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 04:11:22,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:22,862 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] [2021-12-28 04:11:22,862 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:22,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2021-12-28 04:11:22,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:22,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012347925] [2021-12-28 04:11:22,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:22,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:23,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 04:11:23,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:23,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012347925] [2021-12-28 04:11:23,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012347925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:23,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:23,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 04:11:23,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290613221] [2021-12-28 04:11:23,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:23,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 04:11:23,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 04:11:23,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 04:11:23,559 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) [2021-12-28 04:11:26,617 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 [] [2021-12-28 04:11:28,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:32,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:34,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:36,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:41,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:11:41,609 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2021-12-28 04:11:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:11:41,611 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 [2021-12-28 04:11:41,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:11:41,639 INFO L225 Difference]: With dead ends: 3120 [2021-12-28 04:11:41,640 INFO L226 Difference]: Without dead ends: 1581 [2021-12-28 04:11:41,648 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 [2021-12-28 04:11:41,650 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:11:41,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 3341 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 675 Invalid, 6 Unknown, 0 Unchecked, 17.9s Time] [2021-12-28 04:11:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-12-28 04:11:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2021-12-28 04:11:41,782 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) [2021-12-28 04:11:41,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2021-12-28 04:11:41,792 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2021-12-28 04:11:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:11:41,793 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2021-12-28 04:11:41,793 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) [2021-12-28 04:11:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2021-12-28 04:11:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 04:11:41,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:11:41,799 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] [2021-12-28 04:11:41,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:11:41,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:11:41,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:11:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2021-12-28 04:11:41,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:11:41,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519720564] [2021-12-28 04:11:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:11:41,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:11:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:11:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:11:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:42,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:11:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:11:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 04:11:42,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:11:42,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519720564] [2021-12-28 04:11:42,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519720564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:11:42,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:11:42,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:11:42,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092632783] [2021-12-28 04:11:42,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:11:42,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:11:42,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:11:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:11:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:11:42,123 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) [2021-12-28 04:11:46,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:48,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:53,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:55,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:11:58,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:12:08,375 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 [] [2021-12-28 04:12:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:12:10,217 INFO L93 Difference]: Finished difference Result 4649 states and 7103 transitions. [2021-12-28 04:12:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:12:10,217 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 31 [2021-12-28 04:12:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:12:10,232 INFO L225 Difference]: With dead ends: 4649 [2021-12-28 04:12:10,233 INFO L226 Difference]: Without dead ends: 3132 [2021-12-28 04:12:10,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:12:10,237 INFO L933 BasicCegarLoop]: 2649 mSDtfsCounter, 2422 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 6276 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2021-12-28 04:12:10,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 6276 Invalid, 3861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 2917 Invalid, 6 Unknown, 0 Unchecked, 27.7s Time] [2021-12-28 04:12:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2021-12-28 04:12:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3010. [2021-12-28 04:12:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2132 states have (on average 1.372889305816135) internal successors, (2927), 2223 states have internal predecessors, (2927), 772 states have call successors, (772), 106 states have call predecessors, (772), 105 states have return successors, (770), 768 states have call predecessors, (770), 770 states have call successors, (770) [2021-12-28 04:12:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4469 transitions. [2021-12-28 04:12:10,329 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4469 transitions. Word has length 31 [2021-12-28 04:12:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:12:10,330 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 4469 transitions. [2021-12-28 04:12:10,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-28 04:12:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4469 transitions. [2021-12-28 04:12:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-28 04:12:10,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:12:10,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:12:10,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:12:10,332 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:12:10,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:12:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1994554423, now seen corresponding path program 1 times [2021-12-28 04:12:10,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:12:10,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835416070] [2021-12-28 04:12:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:12:10,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:12:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:12:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:12:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:12:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:12:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:12:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:12:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:12:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 04:12:10,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:12:10,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835416070] [2021-12-28 04:12:10,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835416070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:12:10,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:12:10,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:12:10,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871220620] [2021-12-28 04:12:10,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:12:10,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:12:10,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:12:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:12:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:12:10,542 INFO L87 Difference]: Start difference. First operand 3010 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)