./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:58:35,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:58:35,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:58:35,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:58:35,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:58:35,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:58:35,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:58:35,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:58:35,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:58:35,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:58:35,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:58:35,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:58:35,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:58:35,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:58:35,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:58:35,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:58:35,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:58:35,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:58:35,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:58:35,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:58:35,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:58:35,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:58:35,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:58:35,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:58:35,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:58:35,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:58:35,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:58:35,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:58:35,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:58:35,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:58:35,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:58:35,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:58:35,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:58:35,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:58:35,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:58:35,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:58:35,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:58:35,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:58:35,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:58:35,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:58:35,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:58:35,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:58:35,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:58:35,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:58:35,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:58:35,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:58:35,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:58:35,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:58:35,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:58:35,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:58:35,241 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:58:35,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:58:35,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:58:35,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:58:35,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:58:35,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:58:35,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:58:35,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:58:35,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:58:35,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:58:35,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:58:35,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:58:35,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:58:35,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:58:35,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:58:35,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:58:35,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:58:35,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:58:35,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:58:35,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:58:35,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:58:35,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:58:35,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:58:35,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2021-12-14 17:58:35,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:58:35,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:58:35,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:58:35,437 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:58:35,438 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:58:35,439 INFO L432 ainManager$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 [2021-12-14 17:58:35,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63105d5c8/5990eebd5f0541faaac042bea591b0af/FLAG61c2b0600 [2021-12-14 17:58:36,218 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:58:36,219 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 [2021-12-14 17:58:36,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63105d5c8/5990eebd5f0541faaac042bea591b0af/FLAG61c2b0600 [2021-12-14 17:58:36,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63105d5c8/5990eebd5f0541faaac042bea591b0af [2021-12-14 17:58:36,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:58:36,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:58:36,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:58:36,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:58:36,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:58:36,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:58:36" (1/1) ... [2021-12-14 17:58:36,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ac6be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:36, skipping insertion in model container [2021-12-14 17:58:36,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:58:36" (1/1) ... [2021-12-14 17:58:36,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:58:36,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:58:37,026 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-14 17:58:38,229 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] [2021-12-14 17:58:38,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:58:38,310 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:58:38,376 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2021-12-14 17:58:38,692 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] [2021-12-14 17:58:38,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:58:38,750 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:58:38,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38 WrapperNode [2021-12-14 17:58:38,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:58:38,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:58:38,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:58:38,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:58:38,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:38,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,003 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2021-12-14 17:58:39,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:58:39,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:58:39,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:58:39,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:58:39,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:58:39,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:58:39,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:58:39,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:58:39,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (1/1) ... [2021-12-14 17:58:39,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:58:39,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:58:39,268 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) [2021-12-14 17:58:39,283 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 [2021-12-14 17:58:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:58:39,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:58:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2021-12-14 17:58:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-14 17:58:39,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-14 17:58:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2021-12-14 17:58:39,318 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2021-12-14 17:58:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 17:58:39,318 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 17:58:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:58:39,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:58:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:58:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 17:58:39,319 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 17:58:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-12-14 17:58:39,319 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-12-14 17:58:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-14 17:58:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2021-12-14 17:58:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-14 17:58:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-14 17:58:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2021-12-14 17:58:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2021-12-14 17:58:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2021-12-14 17:58:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2021-12-14 17:58:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2021-12-14 17:58:39,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2021-12-14 17:58:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:58:39,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:58:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2021-12-14 17:58:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2021-12-14 17:58:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-14 17:58:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-14 17:58:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2021-12-14 17:58:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2021-12-14 17:58:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2021-12-14 17:58:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2021-12-14 17:58:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-12-14 17:58:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-12-14 17:58:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:58:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:58:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2021-12-14 17:58:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2021-12-14 17:58:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:58:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:58:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:58:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:58:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:58:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:58:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:58:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2021-12-14 17:58:39,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2021-12-14 17:58:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-14 17:58:39,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-14 17:58:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:58:39,327 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:58:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 17:58:39,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 17:58:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:58:39,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:58:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-14 17:58:39,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-14 17:58:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:58:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2021-12-14 17:58:39,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2021-12-14 17:58:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:58:39,329 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2021-12-14 17:58:39,330 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2021-12-14 17:58:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2021-12-14 17:58:39,330 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2021-12-14 17:58:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:58:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:58:39,330 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2021-12-14 17:58:39,330 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2021-12-14 17:58:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-14 17:58:39,331 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-14 17:58:39,331 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2021-12-14 17:58:39,331 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2021-12-14 17:58:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2021-12-14 17:58:39,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2021-12-14 17:58:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:58:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-14 17:58:39,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-14 17:58:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,332 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-14 17:58:39,333 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-14 17:58:39,333 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2021-12-14 17:58:39,333 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2021-12-14 17:58:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-14 17:58:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2021-12-14 17:58:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2021-12-14 17:58:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2021-12-14 17:58:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2021-12-14 17:58:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2021-12-14 17:58:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2021-12-14 17:58:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:58:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-12-14 17:58:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-12-14 17:58:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:58:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-12-14 17:58:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-12-14 17:58:39,336 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2021-12-14 17:58:39,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2021-12-14 17:58:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-14 17:58:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-14 17:58:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:58:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:58:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-14 17:58:39,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-14 17:58:39,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:58:39,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:58:39,338 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-14 17:58:39,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2021-12-14 17:58:39,340 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:58:39,340 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:58:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-12-14 17:58:39,341 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-12-14 17:58:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:58:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:58:39,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:58:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-14 17:58:40,061 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:58:40,065 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:58:40,357 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:58:59,851 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:58:59,869 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:58:59,874 INFO L301 CfgBuilder]: Removed 24 assume(true) statements. [2021-12-14 17:58:59,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:58:59 BoogieIcfgContainer [2021-12-14 17:58:59,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:58:59,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:58:59,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:58:59,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:58:59,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:58:36" (1/3) ... [2021-12-14 17:58:59,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590f009a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:58:59, skipping insertion in model container [2021-12-14 17:58:59,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:58:38" (2/3) ... [2021-12-14 17:58:59,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590f009a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:58:59, skipping insertion in model container [2021-12-14 17:58:59,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:58:59" (3/3) ... [2021-12-14 17:58:59,884 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 [2021-12-14 17:58:59,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:58:59,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:58:59,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:58:59,941 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 [2021-12-14 17:58:59,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:58:59,984 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) [2021-12-14 17:58:59,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-14 17:58:59,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:58:59,991 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] [2021-12-14 17:58:59,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:58:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:58:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2021-12-14 17:59:00,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:59:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525789414] [2021-12-14 17:59:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:59:00,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:59:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:00,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:59:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:00,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:59:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:00,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:59:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:59:00,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:59:00,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525789414] [2021-12-14 17:59:00,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525789414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:59:00,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:59:00,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:59:00,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388622756] [2021-12-14 17:59:00,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:59:00,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:59:00,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:59:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:59:00,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:59:00,599 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) [2021-12-14 17:59:03,416 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 [] [2021-12-14 17:59:05,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:09,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:11,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:14,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:19,192 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 [] [2021-12-14 17:59:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:59:19,838 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2021-12-14 17:59:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:59:19,848 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 [2021-12-14 17:59:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:59:19,878 INFO L225 Difference]: With dead ends: 3120 [2021-12-14 17:59:19,882 INFO L226 Difference]: Without dead ends: 1581 [2021-12-14 17:59:19,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:59:19,898 INFO L933 BasicCegarLoop]: 2258 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:59:19,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 3330 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 664 Invalid, 6 Unknown, 0 Unchecked, 18.9s Time] [2021-12-14 17:59:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-12-14 17:59:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2021-12-14 17:59:20,026 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) [2021-12-14 17:59:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2021-12-14 17:59:20,036 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2021-12-14 17:59:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:59:20,037 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2021-12-14 17:59:20,037 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) [2021-12-14 17:59:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2021-12-14 17:59:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-14 17:59:20,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:59:20,043 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] [2021-12-14 17:59:20,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:59:20,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:59:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:59:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2021-12-14 17:59:20,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:59:20,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111295156] [2021-12-14 17:59:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:59:20,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:59:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:59:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:59:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:59:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:59:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:59:20,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:59:20,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111295156] [2021-12-14 17:59:20,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111295156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:59:20,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:59:20,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:59:20,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997379856] [2021-12-14 17:59:20,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:59:20,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:59:20,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:59:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:59:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:59:20,327 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) [2021-12-14 17:59:24,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:26,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:30,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:32,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:36,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:59:44,970 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 []