./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 eb692b52 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-?-eb692b5 [2022-07-19 23:47:31,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:47:31,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:47:31,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:47:31,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:47:31,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:47:31,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:47:31,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:47:31,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:47:31,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:47:31,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:47:31,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:47:31,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:47:31,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:47:31,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:47:31,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:47:31,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:47:31,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:47:31,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:47:31,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:47:31,826 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:47:31,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:47:31,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:47:31,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:47:31,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:47:31,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:47:31,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:47:31,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:47:31,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:47:31,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:47:31,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:47:31,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:47:31,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:47:31,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:47:31,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:47:31,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:47:31,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:47:31,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:47:31,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:47:31,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:47:31,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:47:31,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:47:31,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:47:31,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:47:31,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:47:31,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:47:31,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:47:31,861 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:47:31,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:47:31,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:47:31,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:47:31,862 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:47:31,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:47:31,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:47:31,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:47:31,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:47:31,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:47:31,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:47:31,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:47:31,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:47:31,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:47:31,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:47:31,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:47:31,865 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:47:31,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:47:31,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:47:31,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db09076fa9a5c529090d66c116e7ec6dbccd2fd7809e50a63c87ed8084989776 [2022-07-19 23:47:32,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:47:32,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:47:32,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:47:32,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:47:32,077 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:47:32,078 INFO L432 ainManager$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 [2022-07-19 23:47:32,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51323969a/52e60370422c416ba3755b2c1feca70f/FLAGf5f3d4be0 [2022-07-19 23:47:32,596 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:47:32,596 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 [2022-07-19 23:47:32,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51323969a/52e60370422c416ba3755b2c1feca70f/FLAGf5f3d4be0 [2022-07-19 23:47:33,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51323969a/52e60370422c416ba3755b2c1feca70f [2022-07-19 23:47:33,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:47:33,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:47:33,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:47:33,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:47:33,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:47:33,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:33,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e05afe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33, skipping insertion in model container [2022-07-19 23:47:33,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:33,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:47:33,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:47:33,363 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1268] [2022-07-19 23:47:33,367 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] [2022-07-19 23:47:33,427 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] [2022-07-19 23:47:33,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:47:33,746 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:47:33,800 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1268] [2022-07-19 23:47:33,801 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] [2022-07-19 23:47:33,805 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] [2022-07-19 23:47:33,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:47:33,894 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:47:33,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33 WrapperNode [2022-07-19 23:47:33,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:47:33,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:47:33,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:47:33,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:47:33,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:33,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,024 INFO L137 Inliner]: procedures = 93, calls = 956, calls flagged for inlining = 31, calls inlined = 28, statements flattened = 1490 [2022-07-19 23:47:34,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:47:34,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:47:34,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:47:34,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:47:34,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:47:34,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:47:34,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:47:34,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:47:34,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (1/1) ... [2022-07-19 23:47:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:47:34,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:47:34,177 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) [2022-07-19 23:47:34,199 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 [2022-07-19 23:47:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_device_unregister_n [2022-07-19 23:47:34,210 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_device_unregister_n [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:47:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:47:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:47:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:47:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:47:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure ff_validate [2022-07-19 23:47:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_validate [2022-07-19 23:47:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:47:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:47:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure ff_irq_request [2022-07-19 23:47:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_irq_request [2022-07-19 23:47:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:47:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:47:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure device_unregister [2022-07-19 23:47:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unregister [2022-07-19 23:47:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure ff_reprogram [2022-07-19 23:47:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_reprogram [2022-07-19 23:47:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure ff_writel [2022-07-19 23:47:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_writel [2022-07-19 23:47:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:47:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:47:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:47:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure ff_readl [2022-07-19 23:47:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_readl [2022-07-19 23:47:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:47:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:47:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_device_register_n [2022-07-19 23:47:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_device_register_n [2022-07-19 23:47:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2022-07-19 23:47:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2022-07-19 23:47:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-07-19 23:47:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-07-19 23:47:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:47:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:47:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:47:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure ff_dev_create [2022-07-19 23:47:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ff_dev_create [2022-07-19 23:47:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:47:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:47:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:47:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:47:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:47:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:47:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:47:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:47:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-19 23:47:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-19 23:47:34,432 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:47:34,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:47:34,481 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:52:04,393 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:52:04,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:52:04,407 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:52:04,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:52:04 BoogieIcfgContainer [2022-07-19 23:52:04,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:52:04,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:52:04,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:52:04,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:52:04,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:47:33" (1/3) ... [2022-07-19 23:52:04,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d2df3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:52:04, skipping insertion in model container [2022-07-19 23:52:04,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:47:33" (2/3) ... [2022-07-19 23:52:04,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d2df3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:52:04, skipping insertion in model container [2022-07-19 23:52:04,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:52:04" (3/3) ... [2022-07-19 23:52:04,418 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 [2022-07-19 23:52:04,427 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:52:04,430 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:52:04,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:52:04,483 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@1528d21a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51e1afc0 [2022-07-19 23:52:04,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:52:04,487 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) [2022-07-19 23:52:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-19 23:52:04,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:52:04,495 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] [2022-07-19 23:52:04,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:52:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:52:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash 862092015, now seen corresponding path program 1 times [2022-07-19 23:52:04,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:52:04,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33433055] [2022-07-19 23:52:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:52:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:52:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:05,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:52:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:52:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:05,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:52:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:05,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:52:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:06,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:52:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 23:52:06,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:52:06,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33433055] [2022-07-19 23:52:06,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33433055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:52:06,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:52:06,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:52:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589881761] [2022-07-19 23:52:06,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:52:06,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:52:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:52:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:52:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:52:06,045 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) [2022-07-19 23:52:08,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:52:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:52:09,721 INFO L93 Difference]: Finished difference Result 557 states and 800 transitions. [2022-07-19 23:52:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:52:09,724 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 [2022-07-19 23:52:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:52:09,735 INFO L225 Difference]: With dead ends: 557 [2022-07-19 23:52:09,735 INFO L226 Difference]: Without dead ends: 272 [2022-07-19 23:52:09,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:52:09,751 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 60 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:52:09,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 842 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 183 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 23:52:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-19 23:52:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-07-19 23:52:09,796 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) [2022-07-19 23:52:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 350 transitions. [2022-07-19 23:52:09,802 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 350 transitions. Word has length 49 [2022-07-19 23:52:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:52:09,802 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 350 transitions. [2022-07-19 23:52:09,803 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) [2022-07-19 23:52:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 350 transitions. [2022-07-19 23:52:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 23:52:09,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:52:09,807 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] [2022-07-19 23:52:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:52:09,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:52:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:52:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 788973138, now seen corresponding path program 1 times [2022-07-19 23:52:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:52:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743591981] [2022-07-19 23:52:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:52:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:52:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:52:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:52:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:52:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:52:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:52:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 23:52:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 23:52:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 23:52:10,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:52:10,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743591981] [2022-07-19 23:52:10,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743591981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:52:10,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:52:10,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:52:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677989498] [2022-07-19 23:52:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:52:10,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:52:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:52:10,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:52:10,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:52:10,728 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) [2022-07-19 23:52:12,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:52:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:52:14,288 INFO L93 Difference]: Finished difference Result 727 states and 1005 transitions. [2022-07-19 23:52:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:52:14,289 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 56 [2022-07-19 23:52:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:52:14,292 INFO L225 Difference]: With dead ends: 727 [2022-07-19 23:52:14,293 INFO L226 Difference]: Without dead ends: 487 [2022-07-19 23:52:14,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:52:14,294 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 380 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:52:14,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 800 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 200 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 23:52:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-19 23:52:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 464. [2022-07-19 23:52:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 352 states have (on average 1.3636363636363635) internal successors, (480), 353 states have internal predecessors, (480), 78 states have call successors, (78), 34 states have call predecessors, (78), 33 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-07-19 23:52:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 635 transitions. [2022-07-19 23:52:14,368 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 635 transitions. Word has length 56 [2022-07-19 23:52:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:52:14,368 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 635 transitions. [2022-07-19 23:52:14,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-19 23:52:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 635 transitions. [2022-07-19 23:52:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 23:52:14,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:52:14,376 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, 1, 1, 1, 1] [2022-07-19 23:52:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:52:14,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:52:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:52:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 620533094, now seen corresponding path program 1 times [2022-07-19 23:52:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:52:14,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205425310] [2022-07-19 23:52:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:52:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:52:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:52:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:52:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:52:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:52:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:52:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 23:52:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:52:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 23:52:15,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:52:15,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205425310] [2022-07-19 23:52:15,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205425310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:52:15,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:52:15,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:52:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790991497] [2022-07-19 23:52:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:52:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:52:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:52:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:52:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:52:15,410 INFO L87 Difference]: Start difference. First operand 464 states and 635 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 23:52:17,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []