./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-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-43_2a-drivers--net--irda--via-ircc.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 f665efa4a665554cf7543e013a29ff4c6ab086907b4fe7628b89c7f514f54a81 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 22:27:58,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:27:58,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:27:58,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:27:58,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:27:58,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:27:58,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:27:58,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:27:58,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:27:58,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:27:58,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:27:58,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:27:58,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:27:58,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:27:58,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:27:58,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:27:58,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:27:58,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:27:58,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:27:58,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:27:58,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:27:58,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:27:58,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:27:58,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:27:58,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:27:58,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:27:58,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:27:58,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:27:58,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:27:58,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:27:58,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:27:58,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:27:58,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:27:58,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:27:58,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:27:58,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:27:58,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:27:58,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:27:58,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:27:58,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:27:58,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:27:58,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:27:58,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:27:58,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:27:58,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:27:58,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:27:58,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:27:58,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:27:58,352 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:27:58,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:27:58,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:27:58,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:27:58,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:27:58,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:27:58,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:27:58,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:27:58,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:27:58,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:27:58,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:27:58,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:27:58,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:27:58,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:27:58,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:27:58,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:27:58,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:27:58,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:27:58,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:27:58,355 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:27:58,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:27:58,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:27:58,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:27:58,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f665efa4a665554cf7543e013a29ff4c6ab086907b4fe7628b89c7f514f54a81 [2021-11-02 22:27:58,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:27:58,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:27:58,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:27:58,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:27:58,586 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:27:58,587 INFO L432 ainManager$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-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2021-11-02 22:27:58,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8d471a5/35d921d7a4bc429da0b0bc75ff7c684b/FLAGe19224577 [2021-11-02 22:27:59,303 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:27:59,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2021-11-02 22:27:59,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8d471a5/35d921d7a4bc429da0b0bc75ff7c684b/FLAGe19224577 [2021-11-02 22:27:59,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8d471a5/35d921d7a4bc429da0b0bc75ff7c684b [2021-11-02 22:27:59,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:27:59,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:27:59,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:27:59,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:27:59,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:27:59,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:27:59" (1/1) ... [2021-11-02 22:27:59,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a18b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:27:59, skipping insertion in model container [2021-11-02 22:27:59,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:27:59" (1/1) ... [2021-11-02 22:27:59,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:27:59,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:28:00,571 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i[298813,298826] [2021-11-02 22:28:00,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:28:00,620 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:28:00,847 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i[298813,298826] [2021-11-02 22:28:00,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:28:00,927 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:28:00,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00 WrapperNode [2021-11-02 22:28:00,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:28:00,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:28:00,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:28:00,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:28:00,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:01,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:32,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:28:32,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:28:32,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:28:32,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:28:32,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:32,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:34,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:34,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:36,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:37,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:37,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:39,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:28:39,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:28:39,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:28:39,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:28:39,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (1/1) ... [2021-11-02 22:28:39,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:28:39,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 22:28:39,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:28:39,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:28:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:28:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:28:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:28:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:28:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:28:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:28:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:28:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:28:59,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:28:59,768 INFO L299 CfgBuilder]: Removed 90723 assume(true) statements. [2021-11-02 22:28:59,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:28:59 BoogieIcfgContainer [2021-11-02 22:28:59,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:28:59,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:28:59,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:28:59,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:28:59,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:27:59" (1/3) ... [2021-11-02 22:28:59,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1551e7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:28:59, skipping insertion in model container [2021-11-02 22:28:59,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:00" (2/3) ... [2021-11-02 22:28:59,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1551e7c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:28:59, skipping insertion in model container [2021-11-02 22:28:59,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:28:59" (3/3) ... [2021-11-02 22:28:59,829 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2021-11-02 22:28:59,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:28:59,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-02 22:29:00,023 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:29:00,027 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:29:00,028 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-02 22:29:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 69317 states, 69296 states have (on average 1.3748412606788272) internal successors, (95271), 69316 states have internal predecessors, (95271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:29:00,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 22:29:00,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:00,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-02 22:29:00,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:00,930 INFO L85 PathProgramCache]: Analyzing trace with hash -115086683, now seen corresponding path program 1 times [2021-11-02 22:29:00,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:00,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994863196] [2021-11-02 22:29:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:00,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:01,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:01,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994863196] [2021-11-02 22:29:01,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994863196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:01,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:01,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:29:01,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479314032] [2021-11-02 22:29:01,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:29:01,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:29:01,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:29:01,559 INFO L87 Difference]: Start difference. First operand has 69317 states, 69296 states have (on average 1.3748412606788272) internal successors, (95271), 69316 states have internal predecessors, (95271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:03,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []