./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.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 a80d5d6260f748dd9867d7bcd6f4a93a5987d3d416867522c1bef6a78e755228 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:52:29,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:52:29,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:52:29,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:52:29,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:52:29,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:52:29,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:52:29,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:52:29,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:52:29,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:52:29,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:52:29,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:52:29,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:52:29,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:52:29,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:52:29,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:52:29,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:52:29,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:52:29,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:52:29,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:52:29,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:52:29,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:52:29,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:52:29,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:52:29,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:52:29,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:52:29,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:52:29,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:52:29,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:52:29,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:52:29,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:52:29,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:52:29,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:52:29,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:52:29,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:52:29,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:52:29,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:52:29,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:52:29,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:52:29,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:52:29,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:52:29,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:52:29,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:52:29,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:52:29,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:52:29,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:52:29,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:52:29,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:52:29,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:52:29,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:52:29,896 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:52:29,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:52:29,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:52:29,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:52:29,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:52:29,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:52:29,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:52:29,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:52:29,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:52:29,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:52:29,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:52:29,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:52:29,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:52:29,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:52:29,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:52:29,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:52:29,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:52:29,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:52:29,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:52:29,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:52:29,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:52:29,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:52:29,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:52:29,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d5d6260f748dd9867d7bcd6f4a93a5987d3d416867522c1bef6a78e755228 [2021-12-22 14:52:30,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:52:30,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:52:30,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:52:30,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:52:30,175 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:52:30,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2021-12-22 14:52:30,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58eb32eac/c0c8d9c6b3fa49d1899adb26e6015a63/FLAGb046c43b3 [2021-12-22 14:52:30,942 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:52:30,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2021-12-22 14:52:30,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58eb32eac/c0c8d9c6b3fa49d1899adb26e6015a63/FLAGb046c43b3 [2021-12-22 14:52:31,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58eb32eac/c0c8d9c6b3fa49d1899adb26e6015a63 [2021-12-22 14:52:31,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:52:31,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:52:31,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:52:31,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:52:31,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:52:31,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:31" (1/1) ... [2021-12-22 14:52:31,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f75684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:31, skipping insertion in model container [2021-12-22 14:52:31,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:52:31" (1/1) ... [2021-12-22 14:52:31,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:52:31,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:52:32,486 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2021-12-22 14:52:32,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:52:32,574 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:52:32,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i[191080,191093] [2021-12-22 14:52:32,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:52:32,968 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:52:32,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32 WrapperNode [2021-12-22 14:52:32,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:52:32,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:52:32,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:52:32,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:52:32,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,142 INFO L137 Inliner]: procedures = 210, calls = 1426, calls flagged for inlining = 105, calls inlined = 105, statements flattened = 3494 [2021-12-22 14:52:33,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:52:33,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:52:33,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:52:33,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:52:33,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:52:33,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:52:33,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:52:33,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:52:33,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (1/1) ... [2021-12-22 14:52:33,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:52:33,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:52:33,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:52:33,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:52:33,478 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_fe_init [2021-12-22 14:52:33,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_fe_init [2021-12-22 14:52:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2021-12-22 14:52:33,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2021-12-22 14:52:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-22 14:52:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-22 14:52:33,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:52:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:52:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-22 14:52:33,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-22 14:52:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:52:33,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:52:33,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 14:52:33,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 14:52:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure wait_i2c_result [2021-12-22 14:52:33,481 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_i2c_result [2021-12-22 14:52:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-22 14:52:33,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-22 14:52:33,481 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 14:52:33,482 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 14:52:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:52:33,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:52:33,482 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_stop_streaming [2021-12-22 14:52:33,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_stop_streaming [2021-12-22 14:52:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-22 14:52:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-22 14:52:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-22 14:52:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-22 14:52:33,483 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-12-22 14:52:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-12-22 14:52:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask [2021-12-22 14:52:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask [2021-12-22 14:52:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_lnb_ctrl [2021-12-22 14:52:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_lnb_ctrl [2021-12-22 14:52:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:52:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:52:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:52:33,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:52:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:52:33,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:52:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-22 14:52:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-22 14:52:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_free_dmabuf [2021-12-22 14:52:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_free_dmabuf [2021-12-22 14:52:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-22 14:52:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-22 14:52:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_alloc_dmabuf [2021-12-22 14:52:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_alloc_dmabuf [2021-12-22 14:52:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:52:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:52:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-22 14:52:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-22 14:52:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-22 14:52:33,488 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-22 14:52:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-22 14:52:33,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-22 14:52:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2021-12-22 14:52:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2021-12-22 14:52:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-22 14:52:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-22 14:52:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:52:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:52:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2021-12-22 14:52:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2021-12-22 14:52:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_base [2021-12-22 14:52:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_base [2021-12-22 14:52:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:52:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:52:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:52:33,492 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:52:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:52:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_resume [2021-12-22 14:52:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_resume [2021-12-22 14:52:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:52:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:52:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:52:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_demod_write [2021-12-22 14:52:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_demod_write [2021-12-22 14:52:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-22 14:52:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-22 14:52:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:52:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure send_i2c_cmd [2021-12-22 14:52:33,494 INFO L138 BoogieDeclarations]: Found implementation of procedure send_i2c_cmd [2021-12-22 14:52:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:52:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:52:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter_packets [2021-12-22 14:52:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter_packets [2021-12-22 14:52:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:52:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:52:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure cmdbuf_add [2021-12-22 14:52:33,496 INFO L138 BoogieDeclarations]: Found implementation of procedure cmdbuf_add [2021-12-22 14:52:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:52:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-22 14:52:33,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-22 14:52:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_stop_dma [2021-12-22 14:52:33,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_stop_dma [2021-12-22 14:52:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:52:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:52:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure put_byte_write [2021-12-22 14:52:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure put_byte_write [2021-12-22 14:52:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_coherent_mask [2021-12-22 14:52:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_coherent_mask [2021-12-22 14:52:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 14:52:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 14:52:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:52:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_set_tuner_power [2021-12-22 14:52:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_set_tuner_power [2021-12-22 14:52:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:52:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_ioremap_bar [2021-12-22 14:52:33,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_ioremap_bar [2021-12-22 14:52:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:52:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:52:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_suspend [2021-12-22 14:52:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_suspend [2021-12-22 14:52:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:52:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-22 14:52:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_start_dma [2021-12-22 14:52:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_start_dma [2021-12-22 14:52:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_find_adapter [2021-12-22 14:52:33,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_find_adapter [2021-12-22 14:52:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-22 14:52:33,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-22 14:52:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_init_dmabuf [2021-12-22 14:52:33,506 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_init_dmabuf [2021-12-22 14:52:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-22 14:52:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-22 14:52:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-22 14:52:33,507 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-22 14:52:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2021-12-22 14:52:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2021-12-22 14:52:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure pt3_cleanup_adapter [2021-12-22 14:52:33,512 INFO L138 BoogieDeclarations]: Found implementation of procedure pt3_cleanup_adapter [2021-12-22 14:52:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:52:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:52:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:52:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:52:33,513 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:52:34,140 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:52:34,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:52:36,823 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:52:46,990 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:52:47,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:52:47,003 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:52:47,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:52:47 BoogieIcfgContainer [2021-12-22 14:52:47,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:52:47,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:52:47,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:52:47,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:52:47,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:52:31" (1/3) ... [2021-12-22 14:52:47,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b12d9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:52:47, skipping insertion in model container [2021-12-22 14:52:47,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:52:32" (2/3) ... [2021-12-22 14:52:47,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b12d9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:52:47, skipping insertion in model container [2021-12-22 14:52:47,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:52:47" (3/3) ... [2021-12-22 14:52:47,013 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--pci--pt3--earth-pt3.ko-entry_point.cil.out.i [2021-12-22 14:52:47,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:52:47,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:52:47,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:52:47,062 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:52:47,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:52:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 989 states, 739 states have (on average 1.3802435723951285) internal successors, (1020), 756 states have internal predecessors, (1020), 190 states have call successors, (190), 59 states have call predecessors, (190), 58 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) [2021-12-22 14:52:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 14:52:47,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:47,110 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:47,110 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:47,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1878981996, now seen corresponding path program 1 times [2021-12-22 14:52:47,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:47,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664060675] [2021-12-22 14:52:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:47,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-22 14:52:47,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:47,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664060675] [2021-12-22 14:52:47,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664060675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:47,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:47,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:52:47,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128485898] [2021-12-22 14:52:47,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:47,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:52:47,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:52:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:52:47,722 INFO L87 Difference]: Start difference. First operand has 989 states, 739 states have (on average 1.3802435723951285) internal successors, (1020), 756 states have internal predecessors, (1020), 190 states have call successors, (190), 59 states have call predecessors, (190), 58 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:52:51,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:52:53,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:52:55,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:52:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:52:55,464 INFO L93 Difference]: Finished difference Result 2071 states and 2997 transitions. [2021-12-22 14:52:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:52:55,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2021-12-22 14:52:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:52:55,485 INFO L225 Difference]: With dead ends: 2071 [2021-12-22 14:52:55,485 INFO L226 Difference]: Without dead ends: 1075 [2021-12-22 14:52:55,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:52:55,503 INFO L933 BasicCegarLoop]: 1385 mSDtfsCounter, 521 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 453 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:52:55,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 2153 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 374 Invalid, 3 Unknown, 0 Unchecked, 7.6s Time] [2021-12-22 14:52:55,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-12-22 14:52:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 977. [2021-12-22 14:52:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 734 states have (on average 1.3719346049046321) internal successors, (1007), 744 states have internal predecessors, (1007), 185 states have call successors, (185), 58 states have call predecessors, (185), 57 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2021-12-22 14:52:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1375 transitions. [2021-12-22 14:52:55,609 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1375 transitions. Word has length 51 [2021-12-22 14:52:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:52:55,610 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1375 transitions. [2021-12-22 14:52:55,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 14:52:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1375 transitions. [2021-12-22 14:52:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-22 14:52:55,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:52:55,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:52:55,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:52:55,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:52:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:52:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 373161192, now seen corresponding path program 1 times [2021-12-22 14:52:55,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:52:55,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328617538] [2021-12-22 14:52:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:52:55,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:52:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:52:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:52:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:52:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:52:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:52:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-22 14:52:55,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:52:55,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328617538] [2021-12-22 14:52:55,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328617538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:52:55,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:52:55,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:52:55,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102378941] [2021-12-22 14:52:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:52:55,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:52:55,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:52:55,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:52:55,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:52:55,914 INFO L87 Difference]: Start difference. First operand 977 states and 1375 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:52:58,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:01,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:04,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:06,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:08,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:10,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:13,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:15,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:17,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:53:17,517 INFO L93 Difference]: Finished difference Result 3087 states and 4423 transitions. [2021-12-22 14:53:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:53:17,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-12-22 14:53:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:53:17,535 INFO L225 Difference]: With dead ends: 3087 [2021-12-22 14:53:17,535 INFO L226 Difference]: Without dead ends: 2120 [2021-12-22 14:53:17,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:53:17,543 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 1786 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 583 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:53:17,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1932 Valid, 4227 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1269 Invalid, 9 Unknown, 0 Unchecked, 21.4s Time] [2021-12-22 14:53:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-12-22 14:53:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1921. [2021-12-22 14:53:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1443 states have (on average 1.3742203742203742) internal successors, (1983), 1462 states have internal predecessors, (1983), 363 states have call successors, (363), 115 states have call predecessors, (363), 114 states have return successors, (374), 361 states have call predecessors, (374), 361 states have call successors, (374) [2021-12-22 14:53:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2720 transitions. [2021-12-22 14:53:17,639 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2720 transitions. Word has length 51 [2021-12-22 14:53:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:53:17,640 INFO L470 AbstractCegarLoop]: Abstraction has 1921 states and 2720 transitions. [2021-12-22 14:53:17,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-22 14:53:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2720 transitions. [2021-12-22 14:53:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 14:53:17,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:53:17,645 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:53:17,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:53:17,645 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:53:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:53:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -133518992, now seen corresponding path program 1 times [2021-12-22 14:53:17,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:53:17,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146051188] [2021-12-22 14:53:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:53:17,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:53:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:53:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:53:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:53:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 14:53:18,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:53:18,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146051188] [2021-12-22 14:53:18,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146051188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:53:18,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:53:18,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:53:18,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637129630] [2021-12-22 14:53:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:53:18,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:53:18,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:53:18,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:53:18,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:53:18,045 INFO L87 Difference]: Start difference. First operand 1921 states and 2720 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 14:53:21,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:23,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:25,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:27,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:29,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:31,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:34,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:36,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:53:36,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:53:36,923 INFO L93 Difference]: Finished difference Result 6132 states and 8819 transitions. [2021-12-22 14:53:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:53:36,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2021-12-22 14:53:36,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:53:36,952 INFO L225 Difference]: With dead ends: 6132 [2021-12-22 14:53:36,952 INFO L226 Difference]: Without dead ends: 4216 [2021-12-22 14:53:36,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:53:36,969 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 2256 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 1045 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1045 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:53:36,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2381 Valid, 3529 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1045 Valid, 846 Invalid, 8 Unknown, 0 Unchecked, 18.7s Time] [2021-12-22 14:53:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2021-12-22 14:53:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 3820. [2021-12-22 14:53:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 2869 states have (on average 1.374346462181945) internal successors, (3943), 2906 states have internal predecessors, (3943), 722 states have call successors, (722), 229 states have call predecessors, (722), 228 states have return successors, (750), 720 states have call predecessors, (750), 720 states have call successors, (750) [2021-12-22 14:53:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 5415 transitions. [2021-12-22 14:53:37,136 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 5415 transitions. Word has length 71 [2021-12-22 14:53:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:53:37,136 INFO L470 AbstractCegarLoop]: Abstraction has 3820 states and 5415 transitions. [2021-12-22 14:53:37,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 14:53:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 5415 transitions. [2021-12-22 14:53:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 14:53:37,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:53:37,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:53:37,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:53:37,140 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:53:37,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:53:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1826713808, now seen corresponding path program 1 times [2021-12-22 14:53:37,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:53:37,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651501768] [2021-12-22 14:53:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:53:37,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:53:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:53:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 14:53:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:53:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 14:53:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:53:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:53:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:53:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-22 14:53:37,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:53:37,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651501768] [2021-12-22 14:53:37,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651501768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:53:37,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:53:37,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:53:37,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469279069] [2021-12-22 14:53:37,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:53:37,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:53:37,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:53:37,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:53:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:53:37,507 INFO L87 Difference]: Start difference. First operand 3820 states and 5415 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)