./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.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 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:52:57,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:52:57,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:52:57,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:52:57,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:52:57,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:52:57,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:52:57,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:52:57,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:52:57,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:52:57,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:52:57,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:52:57,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:52:57,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:52:57,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:52:57,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:52:57,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:52:57,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:52:57,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:52:57,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:52:57,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:52:57,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:52:57,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:52:57,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:52:57,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:52:57,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:52:57,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:52:57,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:52:57,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:52:57,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:52:57,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:52:57,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:52:57,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:52:57,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:52:57,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:52:57,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:52:57,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:52:57,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:52:57,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:52:57,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:52:57,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:52:57,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:52:57,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:52:57,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:52:57,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:52:57,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:52:57,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:52:57,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:52:57,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:52:57,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:52:57,802 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:52:57,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:52:57,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:52:57,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:52:57,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:52:57,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:52:57,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:52:57,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:52:57,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:52:57,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:52:57,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:52:57,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:52:57,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:52:57,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:52:57,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:52:57,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:52:57,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:52:57,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:52:57,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:52:57,806 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:52:57,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:52:57,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:52:57,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:52:57,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ff1aa7a746f87b9c1b788d1f6729b885abef13666f4b3b25250b45ff5a6786 [2021-12-14 17:52:58,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:52:58,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:52:58,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:52:58,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:52:58,058 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:52:58,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-14 17:52:58,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000a9cc0d/402738562dd44f3fba1a2d705cf83253/FLAGc73122a1f [2021-12-14 17:52:58,706 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:52:58,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-14 17:52:58,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000a9cc0d/402738562dd44f3fba1a2d705cf83253/FLAGc73122a1f [2021-12-14 17:52:58,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/000a9cc0d/402738562dd44f3fba1a2d705cf83253 [2021-12-14 17:52:58,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:52:58,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:52:58,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:52:58,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:52:58,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:52:58,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:52:58" (1/1) ... [2021-12-14 17:52:58,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51eb17f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:52:58, skipping insertion in model container [2021-12-14 17:52:58,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:52:58" (1/1) ... [2021-12-14 17:52:58,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:52:58,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:52:59,424 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-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-12-14 17:52:59,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:52:59,961 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:53:00,042 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-validator-v0.6/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i[115668,115681] [2021-12-14 17:53:00,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:53:00,234 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:53:00,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00 WrapperNode [2021-12-14 17:53:00,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:53:00,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:53:00,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:53:00,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:53:00,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,415 INFO L137 Inliner]: procedures = 160, calls = 1221, calls flagged for inlining = 70, calls inlined = 70, statements flattened = 3023 [2021-12-14 17:53:00,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:53:00,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:53:00,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:53:00,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:53:00,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:53:00,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:53:00,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:53:00,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:53:00,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (1/1) ... [2021-12-14 17:53:00,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:53:00,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:53:00,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:53:00,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:53:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_radio_text [2021-12-14 17:53:00,719 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_radio_text [2021-12-14 17:53:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:53:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:53:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:53:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:53:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:53:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:53:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_is_valid [2021-12-14 17:53:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_is_valid [2021-12-14 17:53:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_wait_stc [2021-12-14 17:53:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_wait_stc [2021-12-14 17:53:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_usecs [2021-12-14 17:53:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_usecs [2021-12-14 17:53:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_mute [2021-12-14 17:53:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_mute [2021-12-14 17:53:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:53:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:53:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-12-14 17:53:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-12-14 17:53:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:53:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:53:00,722 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_power_state [2021-12-14 17:53:00,722 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_power_state [2021-12-14 17:53:00,723 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_choose_econtrol_action [2021-12-14 17:53:00,723 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_choose_econtrol_action [2021-12-14 17:53:00,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_len [2021-12-14 17:53:00,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_len [2021-12-14 17:53:00,723 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:53:00,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:53:00,723 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 17:53:00,724 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 17:53:00,724 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_tune [2021-12-14 17:53:00,724 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_tune [2021-12-14 17:53:00,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:53:00,724 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:53:00,724 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:53:00,725 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:53:00,725 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:53:00,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:53:00,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:53:00,725 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 17:53:00,725 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 17:53:00,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__copy_from_user_1 [2021-12-14 17:53:00,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__copy_from_user_1 [2021-12-14 17:53:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:53:00,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:53:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_strlen [2021-12-14 17:53:00,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_strlen [2021-12-14 17:53:00,726 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-12-14 17:53:00,727 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-12-14 17:53:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_rds_buff [2021-12-14 17:53:00,727 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_rds_buff [2021-12-14 17:53:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:53:00,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:53:00,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:53:00,728 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_query_fill [2021-12-14 17:53:00,729 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_query_fill [2021-12-14 17:53:00,729 INFO L130 BoogieDeclarations]: Found specification of procedure validate_range [2021-12-14 17:53:00,729 INFO L138 BoogieDeclarations]: Found implementation of procedure validate_range [2021-12-14 17:53:00,729 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_free [2021-12-14 17:53:00,730 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_free [2021-12-14 17:53:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_econtrol_integers [2021-12-14 17:53:00,730 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_econtrol_integers [2021-12-14 17:53:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:53:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 17:53:00,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 17:53:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:53:00,730 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-12-14 17:53:00,731 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-12-14 17:53:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:53:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2021-12-14 17:53:00,731 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2021-12-14 17:53:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 17:53:00,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 17:53:00,731 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_send_command [2021-12-14 17:53:00,731 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_send_command [2021-12-14 17:53:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_get_subdevdata [2021-12-14 17:53:00,732 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_get_subdevdata [2021-12-14 17:53:00,732 INFO L130 BoogieDeclarations]: Found specification of procedure usecs_to_jiffies [2021-12-14 17:53:00,732 INFO L138 BoogieDeclarations]: Found implementation of procedure usecs_to_jiffies [2021-12-14 17:53:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_write_property [2021-12-14 17:53:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_write_property [2021-12-14 17:53:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:53:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-14 17:53:00,733 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-14 17:53:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:53:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:53:00,733 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_read_property [2021-12-14 17:53:00,734 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_read_property [2021-12-14 17:53:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:53:00,734 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:53:00,734 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_frequency [2021-12-14 17:53:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_frequency [2021-12-14 17:53:00,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_copy_from_user_7 [2021-12-14 17:53:00,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_copy_from_user_7 [2021-12-14 17:53:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:53:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:53:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:53:00,736 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:53:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:53:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_tx_tune_status [2021-12-14 17:53:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_tx_tune_status [2021-12-14 17:53:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_ret_val [2021-12-14 17:53:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_ret_val [2021-12-14 17:53:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_update_tune_status [2021-12-14 17:53:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_update_tune_status [2021-12-14 17:53:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_set_rds_ps_name [2021-12-14 17:53:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_set_rds_ps_name [2021-12-14 17:53:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_queryctrl [2021-12-14 17:53:00,738 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_queryctrl [2021-12-14 17:53:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure si4713_s_modulator [2021-12-14 17:53:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure si4713_s_modulator [2021-12-14 17:53:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:53:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:53:00,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:53:00,739 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-14 17:53:00,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:53:00,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:53:01,271 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:53:01,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:53:01,484 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:53:04,687 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:53:04,700 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:53:04,700 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:53:04,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:53:04 BoogieIcfgContainer [2021-12-14 17:53:04,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:53:04,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:53:04,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:53:04,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:53:04,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:52:58" (1/3) ... [2021-12-14 17:53:04,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647e08bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:53:04, skipping insertion in model container [2021-12-14 17:53:04,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:00" (2/3) ... [2021-12-14 17:53:04,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647e08bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:53:04, skipping insertion in model container [2021-12-14 17:53:04,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:53:04" (3/3) ... [2021-12-14 17:53:04,710 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point.cil.out.i [2021-12-14 17:53:04,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:53:04,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:53:04,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:53:04,763 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:53:04,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:53:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) [2021-12-14 17:53:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-14 17:53:04,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:53:04,813 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:53:04,814 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:53:04,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:53:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1678977370, now seen corresponding path program 1 times [2021-12-14 17:53:04,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:53:04,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703502716] [2021-12-14 17:53:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:53:04,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:53:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:53:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:53:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:05,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 17:53:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 17:53:05,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:53:05,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703502716] [2021-12-14 17:53:05,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703502716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:53:05,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:53:05,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:53:05,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568197996] [2021-12-14 17:53:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:53:05,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:53:05,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:53:05,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:53:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:53:05,436 INFO L87 Difference]: Start difference. First operand has 1040 states, 771 states have (on average 1.404669260700389) internal successors, (1083), 787 states have internal predecessors, (1083), 217 states have call successors, (217), 51 states have call predecessors, (217), 50 states have return successors, (210), 210 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:53:08,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:53:09,119 INFO L93 Difference]: Finished difference Result 2587 states and 3777 transitions. [2021-12-14 17:53:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:53:09,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2021-12-14 17:53:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:53:09,144 INFO L225 Difference]: With dead ends: 2587 [2021-12-14 17:53:09,145 INFO L226 Difference]: Without dead ends: 1520 [2021-12-14 17:53:09,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:53:09,166 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 910 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:53:09,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 3404 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-14 17:53:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-12-14 17:53:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1462. [2021-12-14 17:53:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1098 states have (on average 1.3852459016393444) internal successors, (1521), 1110 states have internal predecessors, (1521), 286 states have call successors, (286), 78 states have call predecessors, (286), 77 states have return successors, (285), 284 states have call predecessors, (285), 285 states have call successors, (285) [2021-12-14 17:53:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2092 transitions. [2021-12-14 17:53:09,333 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2092 transitions. Word has length 58 [2021-12-14 17:53:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:53:09,334 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2092 transitions. [2021-12-14 17:53:09,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:53:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2092 transitions. [2021-12-14 17:53:09,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-14 17:53:09,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:53:09,346 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:53:09,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:53:09,346 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:53:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:53:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1282308759, now seen corresponding path program 1 times [2021-12-14 17:53:09,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:53:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179127290] [2021-12-14 17:53:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:53:09,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:53:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:53:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:53:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:53:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:53:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:53:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:53:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:53:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:53:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:53:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:53:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-14 17:53:09,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:53:09,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179127290] [2021-12-14 17:53:09,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179127290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:53:09,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:53:09,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:53:09,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539480881] [2021-12-14 17:53:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:53:09,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:53:09,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:53:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:53:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:53:09,829 INFO L87 Difference]: Start difference. First operand 1462 states and 2092 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:53:15,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:17,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:20,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:24,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:53:25,001 INFO L93 Difference]: Finished difference Result 3431 states and 5003 transitions. [2021-12-14 17:53:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:53:25,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2021-12-14 17:53:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:53:25,017 INFO L225 Difference]: With dead ends: 3431 [2021-12-14 17:53:25,017 INFO L226 Difference]: Without dead ends: 1978 [2021-12-14 17:53:25,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:53:25,033 INFO L933 BasicCegarLoop]: 1749 mSDtfsCounter, 606 mSDsluCounter, 6867 mSDsCounter, 0 mSdLazyCounter, 4122 mSolverCounterSat, 242 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 8616 SdHoareTripleChecker+Invalid, 4367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 4122 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:53:25,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 8616 Invalid, 4367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 4122 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2021-12-14 17:53:25,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2021-12-14 17:53:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1468. [2021-12-14 17:53:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-12-14 17:53:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-14 17:53:25,111 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 116 [2021-12-14 17:53:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:53:25,113 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-14 17:53:25,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:53:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-14 17:53:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 17:53:25,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:53:25,120 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:53:25,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:53:25,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:53:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:53:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash -942216361, now seen corresponding path program 1 times [2021-12-14 17:53:25,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:53:25,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837429284] [2021-12-14 17:53:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:53:25,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:53:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:53:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:53:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:53:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:53:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:53:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:53:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:53:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:53:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:53:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:53:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:53:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-14 17:53:25,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:53:25,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837429284] [2021-12-14 17:53:25,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837429284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:53:25,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:53:25,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:53:25,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093537299] [2021-12-14 17:53:25,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:53:25,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:53:25,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:53:25,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:53:25,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:53:25,577 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:53:32,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:53:39,765 INFO L93 Difference]: Finished difference Result 3446 states and 5028 transitions. [2021-12-14 17:53:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:53:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-14 17:53:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:53:39,778 INFO L225 Difference]: With dead ends: 3446 [2021-12-14 17:53:39,778 INFO L226 Difference]: Without dead ends: 1987 [2021-12-14 17:53:39,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:53:39,786 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 655 mSDsluCounter, 9232 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 370 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 10946 SdHoareTripleChecker+Invalid, 5818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:53:39,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 10946 Invalid, 5818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 5447 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2021-12-14 17:53:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-14 17:53:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1468. [2021-12-14 17:53:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1103 states have (on average 1.3844061650045332) internal successors, (1527), 1115 states have internal predecessors, (1527), 286 states have call successors, (286), 78 states have call predecessors, (286), 78 states have return successors, (288), 285 states have call predecessors, (288), 285 states have call successors, (288) [2021-12-14 17:53:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2101 transitions. [2021-12-14 17:53:39,845 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2101 transitions. Word has length 117 [2021-12-14 17:53:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:53:39,846 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2101 transitions. [2021-12-14 17:53:39,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:53:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2101 transitions. [2021-12-14 17:53:39,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 17:53:39,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:53:39,851 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:53:39,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:53:39,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:53:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:53:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1025870257, now seen corresponding path program 1 times [2021-12-14 17:53:39,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:53:39,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976054992] [2021-12-14 17:53:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:53:39,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:53:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:53:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:53:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:53:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:53:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:53:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:53:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:53:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:53:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:53:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:53:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-14 17:53:40,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:53:40,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976054992] [2021-12-14 17:53:40,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976054992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:53:40,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:53:40,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 17:53:40,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624859403] [2021-12-14 17:53:40,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:53:40,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 17:53:40,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:53:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 17:53:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:53:40,303 INFO L87 Difference]: Start difference. First operand 1468 states and 2101 transitions. Second operand has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:53:53,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:54,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:53:55,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:53:55,012 INFO L93 Difference]: Finished difference Result 4491 states and 6700 transitions. [2021-12-14 17:53:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:53:55,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2021-12-14 17:53:55,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:53:55,029 INFO L225 Difference]: With dead ends: 4491 [2021-12-14 17:53:55,029 INFO L226 Difference]: Without dead ends: 3032 [2021-12-14 17:53:55,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:53:55,035 INFO L933 BasicCegarLoop]: 2553 mSDtfsCounter, 1227 mSDsluCounter, 12191 mSDsCounter, 0 mSdLazyCounter, 5930 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 14744 SdHoareTripleChecker+Invalid, 6288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:53:55,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 14744 Invalid, 6288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 5930 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2021-12-14 17:53:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-12-14 17:53:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1475. [2021-12-14 17:53:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1109 states have (on average 1.3832281334535617) internal successors, (1534), 1121 states have internal predecessors, (1534), 286 states have call successors, (286), 78 states have call predecessors, (286), 79 states have return successors, (291), 286 states have call predecessors, (291), 285 states have call successors, (291) [2021-12-14 17:53:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2111 transitions. [2021-12-14 17:53:55,101 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2111 transitions. Word has length 117 [2021-12-14 17:53:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:53:55,102 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2111 transitions. [2021-12-14 17:53:55,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.75) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-14 17:53:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2111 transitions. [2021-12-14 17:53:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-14 17:53:55,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:53:55,110 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:53:55,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:53:55,111 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:53:55,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:53:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1266672241, now seen corresponding path program 1 times [2021-12-14 17:53:55,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:53:55,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850259145] [2021-12-14 17:53:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:53:55,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:53:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:53:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:53:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:53:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:53:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:53:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:53:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:53:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:53:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:53:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:53:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 17:53:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:53:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:53:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-12-14 17:53:55,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:53:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850259145] [2021-12-14 17:53:55,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850259145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:53:55,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:53:55,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:53:55,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464497380] [2021-12-14 17:53:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:53:55,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:53:55,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:53:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:53:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:53:55,470 INFO L87 Difference]: Start difference. First operand 1475 states and 2111 transitions. Second operand has 11 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)