./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.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 db09076fa9a5c529090d66c116e7ec6dbccd2fd7809e50a63c87ed8084989776 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:45:24,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:45:24,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:45:25,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:45:25,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:45:25,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:45:25,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:45:25,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:45:25,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:45:25,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:45:25,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:45:25,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:45:25,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:45:25,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:45:25,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:45:25,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:45:25,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:45:25,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:45:25,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:45:25,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:45:25,083 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:45:25,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:45:25,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:45:25,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:45:25,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:45:25,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:45:25,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:45:25,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:45:25,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:45:25,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:45:25,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:45:25,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:45:25,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:45:25,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:45:25,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:45:25,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:45:25,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:45:25,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:45:25,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:45:25,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:45:25,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:45:25,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:45:25,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:45:25,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:45:25,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:45:25,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:45:25,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:45:25,148 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:45:25,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:45:25,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:45:25,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:45:25,150 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:45:25,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:45:25,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:45:25,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:45:25,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:45:25,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:45:25,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:45:25,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:45:25,152 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:45:25,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:45:25,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:45:25,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:45:25,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:45:25,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:45:25,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:45:25,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:45:25,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:45:25,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:45:25,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:45:25,155 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:45:25,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:45:25,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:45:25,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db09076fa9a5c529090d66c116e7ec6dbccd2fd7809e50a63c87ed8084989776 [2022-07-12 12:45:25,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:45:25,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:45:25,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:45:25,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:45:25,435 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:45:25,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i [2022-07-12 12:45:25,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1787b31/f301c52491ab49edbf19177cce967d29/FLAGae2dd6ca6 [2022-07-12 12:45:26,040 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:45:26,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i [2022-07-12 12:45:26,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1787b31/f301c52491ab49edbf19177cce967d29/FLAGae2dd6ca6 [2022-07-12 12:45:26,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1787b31/f301c52491ab49edbf19177cce967d29 [2022-07-12 12:45:26,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:45:26,299 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:45:26,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:45:26,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:45:26,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:45:26,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:45:26" (1/1) ... [2022-07-12 12:45:26,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18163aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:26, skipping insertion in model container [2022-07-12 12:45:26,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:45:26" (1/1) ... [2022-07-12 12:45:26,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:45:26,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:45:26,627 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1268] [2022-07-12 12:45:26,629 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1269-1270] [2022-07-12 12:45:26,728 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i[40937,40950] [2022-07-12 12:45:26,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:45:27,146 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:45:27,197 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1268] [2022-07-12 12:45:27,201 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1269-1270] [2022-07-12 12:45:27,210 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i[40937,40950] [2022-07-12 12:45:27,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:45:27,380 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:45:27,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27 WrapperNode [2022-07-12 12:45:27,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:45:27,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:45:27,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:45:27,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:45:27,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,528 INFO L137 Inliner]: procedures = 93, calls = 956, calls flagged for inlining = 31, calls inlined = 28, statements flattened = 1490 [2022-07-12 12:45:27,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:45:27,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:45:27,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:45:27,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:45:27,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:45:27,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:45:27,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:45:27,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:45:27,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (1/1) ... [2022-07-12 12:45:27,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:45:27,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:45:27,709 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) [2022-07-12 12:45:27,731 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 [2022-07-12 12:45:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:45:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:45:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:45:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:45:27,749 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_device_unregister_n [2022-07-12 12:45:27,749 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_device_unregister_n [2022-07-12 12:45:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:45:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:45:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:45:27,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:45:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:45:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:45:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure ff_validate [2022-07-12 12:45:27,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_validate [2022-07-12 12:45:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:45:27,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:45:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure ff_irq_request [2022-07-12 12:45:27,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_irq_request [2022-07-12 12:45:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:45:27,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:45:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2022-07-12 12:45:27,752 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2022-07-12 12:45:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure ff_reprogram [2022-07-12 12:45:27,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_reprogram [2022-07-12 12:45:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure ff_writel [2022-07-12 12:45:27,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_writel [2022-07-12 12:45:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:45:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:45:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:45:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure ff_readl [2022-07-12 12:45:27,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_readl [2022-07-12 12:45:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:45:27,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:45:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_device_register_n [2022-07-12 12:45:27,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_device_register_n [2022-07-12 12:45:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-07-12 12:45:27,754 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-07-12 12:45:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-07-12 12:45:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-07-12 12:45:27,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:45:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:45:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:45:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure ff_dev_create [2022-07-12 12:45:27,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_dev_create [2022-07-12 12:45:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:45:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:45:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:45:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:45:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:45:27,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:45:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-12 12:45:27,758 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-12 12:45:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-12 12:45:27,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-12 12:45:28,048 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:45:28,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:45:28,120 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:49:59,741 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:49:59,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:49:59,758 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 12:49:59,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:49:59 BoogieIcfgContainer [2022-07-12 12:49:59,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:49:59,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:49:59,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:49:59,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:49:59,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:45:26" (1/3) ... [2022-07-12 12:49:59,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c554a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:49:59, skipping insertion in model container [2022-07-12 12:49:59,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:45:27" (2/3) ... [2022-07-12 12:49:59,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c554a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:49:59, skipping insertion in model container [2022-07-12 12:49:59,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:49:59" (3/3) ... [2022-07-12 12:49:59,771 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--fmc--fmc-fakedev.ko-entry_point.cil.out.i [2022-07-12 12:49:59,787 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:49:59,787 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:49:59,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:49:59,856 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c78efc7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37f6732b [2022-07-12 12:49:59,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:49:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 200 states have (on average 1.385) internal successors, (277), 208 states have internal predecessors, (277), 52 states have call successors, (52), 19 states have call predecessors, (52), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-12 12:49:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 12:49:59,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:49:59,874 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:49:59,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:49:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:49:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash 862092015, now seen corresponding path program 1 times [2022-07-12 12:49:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:49:59,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223692490] [2022-07-12 12:49:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:49:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:50:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:50:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:50:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:01,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:50:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:50:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:01,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:50:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 12:50:01,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:50:01,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223692490] [2022-07-12 12:50:01,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223692490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:50:01,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:50:01,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:50:01,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707646789] [2022-07-12 12:50:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:50:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:50:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:50:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:50:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:50:01,938 INFO L87 Difference]: Start difference. First operand has 272 states, 200 states have (on average 1.385) internal successors, (277), 208 states have internal predecessors, (277), 52 states have call successors, (52), 19 states have call predecessors, (52), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 12:50:04,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:50:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:50:05,736 INFO L93 Difference]: Finished difference Result 557 states and 800 transitions. [2022-07-12 12:50:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:50:05,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-07-12 12:50:05,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:50:05,750 INFO L225 Difference]: With dead ends: 557 [2022-07-12 12:50:05,750 INFO L226 Difference]: Without dead ends: 272 [2022-07-12 12:50:05,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:50:05,758 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 60 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:50:05,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 842 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 183 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 12:50:05,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-12 12:50:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-07-12 12:50:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 191 states have (on average 1.356020942408377) internal successors, (259), 192 states have internal predecessors, (259), 46 states have call successors, (46), 18 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 12:50:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 350 transitions. [2022-07-12 12:50:05,814 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 350 transitions. Word has length 49 [2022-07-12 12:50:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:50:05,815 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 350 transitions. [2022-07-12 12:50:05,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 12:50:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 350 transitions. [2022-07-12 12:50:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 12:50:05,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:50:05,820 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:50:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:50:05,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:50:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:50:05,821 INFO L85 PathProgramCache]: Analyzing trace with hash 788973138, now seen corresponding path program 1 times [2022-07-12 12:50:05,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:50:05,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636555114] [2022-07-12 12:50:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:50:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:50:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:50:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:50:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 12:50:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:50:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:50:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:50:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:50:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:50:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 12:50:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:50:07,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636555114] [2022-07-12 12:50:07,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636555114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:50:07,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:50:07,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:50:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288192287] [2022-07-12 12:50:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:50:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:50:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:50:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:50:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:50:07,077 INFO L87 Difference]: Start difference. First operand 255 states and 350 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)