./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.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-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.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 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:53:42,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:53:42,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:53:42,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:53:42,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:53:42,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:53:42,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:53:42,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:53:42,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:53:42,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:53:42,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:53:42,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:53:42,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:53:42,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:53:42,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:53:42,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:53:42,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:53:42,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:53:42,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:53:42,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:53:42,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:53:42,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:53:42,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:53:42,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:53:42,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:53:42,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:53:42,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:53:42,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:53:42,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:53:42,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:53:42,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:53:42,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:53:42,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:53:42,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:53:42,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:53:42,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:53:42,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:53:42,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:53:42,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:53:42,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:53:42,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:53:42,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:53:42,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:53:42,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:53:42,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:53:42,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:53:42,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:53:42,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:53:42,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:53:42,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:53:42,830 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:53:42,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:53:42,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:53:42,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:53:42,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:53:42,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:53:42,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:53:42,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:53:42,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:53:42,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:53:42,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:53:42,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:53:42,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:53:42,836 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:53:42,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:53:42,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:53:42,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:53:42,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2021-12-14 17:53:43,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:53:43,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:53:43,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:53:43,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:53:43,043 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:53:43,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-12-14 17:53:43,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20b10850/e9bcb77b3a6e404aaebf6991e2261f4a/FLAG391e2dcb9 [2021-12-14 17:53:43,719 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:53:43,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-12-14 17:53:43,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20b10850/e9bcb77b3a6e404aaebf6991e2261f4a/FLAG391e2dcb9 [2021-12-14 17:53:44,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20b10850/e9bcb77b3a6e404aaebf6991e2261f4a [2021-12-14 17:53:44,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:53:44,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:53:44,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:53:44,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:53:44,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:53:44,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:53:44" (1/1) ... [2021-12-14 17:53:44,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6c2785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:44, skipping insertion in model container [2021-12-14 17:53:44,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:53:44" (1/1) ... [2021-12-14 17:53:44,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:53:44,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:53:44,793 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-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-12-14 17:53:45,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:53:45,143 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:53:45,250 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-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-12-14 17:53:45,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:53:45,463 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:53:45,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45 WrapperNode [2021-12-14 17:53:45,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:53:45,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:53:45,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:53:45,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:53:45,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,657 INFO L137 Inliner]: procedures = 204, calls = 2153, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 4781 [2021-12-14 17:53:45,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:53:45,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:53:45,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:53:45,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:53:45,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:53:45,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:53:45,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:53:45,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:53:45,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (1/1) ... [2021-12-14 17:53:45,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:53:45,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:53:45,873 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 17:53:45,890 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 17:53:45,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-14 17:53:45,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-14 17:53:45,901 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-14 17:53:45,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-14 17:53:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:53:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:53:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 17:53:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:53:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:53:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:53:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:53:45,902 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-14 17:53:45,902 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-14 17:53:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-14 17:53:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-14 17:53:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 17:53:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 17:53:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:53:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:53:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-14 17:53:45,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-14 17:53:45,903 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-14 17:53:45,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-14 17:53:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-14 17:53:45,904 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-14 17:53:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-14 17:53:45,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-14 17:53:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:53:45,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:53:45,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:53:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:53:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-14 17:53:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-14 17:53:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:53:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:53:45,905 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-14 17:53:45,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-14 17:53:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:53:45,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:53:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-14 17:53:45,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-14 17:53:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-14 17:53:45,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-14 17:53:45,906 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-14 17:53:45,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-14 17:53:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-14 17:53:45,907 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-14 17:53:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-14 17:53:45,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-14 17:53:45,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-14 17:53:45,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-14 17:53:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:53:45,908 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:53:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:53:45,908 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-14 17:53:45,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-14 17:53:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-14 17:53:45,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-14 17:53:45,909 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-14 17:53:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-14 17:53:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:53:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-14 17:53:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-14 17:53:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:53:45,910 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:53:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:53:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-14 17:53:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-14 17:53:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:53:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-14 17:53:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-14 17:53:45,911 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2021-12-14 17:53:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2021-12-14 17:53:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:53:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:53:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-14 17:53:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-14 17:53:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-14 17:53:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-14 17:53:45,912 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:53:45,912 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:53:45,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_reg [2021-12-14 17:53:45,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_reg [2021-12-14 17:53:45,913 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:53:45,913 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:53:45,913 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:53:45,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:53:45,913 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:53:45,913 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:53:45,913 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:53:45,914 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:53:45,914 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-14 17:53:45,914 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-14 17:53:45,914 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 17:53:45,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 17:53:45,914 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-14 17:53:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-14 17:53:45,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:53:45,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:53:45,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:53:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:53:45,916 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:53:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:53:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:53:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-14 17:53:45,916 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-14 17:53:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-14 17:53:45,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-14 17:53:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:53:45,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:53:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:53:45,917 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:53:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-14 17:53:45,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-14 17:53:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-14 17:53:45,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-14 17:53:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:53:45,918 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:53:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:53:45,920 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 17:53:45,920 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 17:53:45,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_der [2021-12-14 17:53:45,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_der [2021-12-14 17:53:45,921 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-14 17:53:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-14 17:53:45,922 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-14 17:53:45,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-14 17:53:45,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:53:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:53:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:53:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:53:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-14 17:53:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-14 17:53:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-14 17:53:45,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-14 17:53:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:53:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-12-14 17:53:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-14 17:53:45,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-14 17:53:45,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-14 17:53:45,967 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:53:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:53:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-14 17:53:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-14 17:53:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:53:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-14 17:53:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-14 17:53:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-14 17:53:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-14 17:53:45,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:53:45,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:53:46,439 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:53:46,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:53:46,713 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:54:16,078 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:54:16,123 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:54:16,123 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:54:16,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:16 BoogieIcfgContainer [2021-12-14 17:54:16,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:54:16,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:54:16,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:54:16,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:54:16,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:53:44" (1/3) ... [2021-12-14 17:54:16,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:16, skipping insertion in model container [2021-12-14 17:54:16,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:53:45" (2/3) ... [2021-12-14 17:54:16,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552b837a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:54:16, skipping insertion in model container [2021-12-14 17:54:16,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:54:16" (3/3) ... [2021-12-14 17:54:16,144 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-12-14 17:54:16,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:54:16,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:54:16,189 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:54:16,194 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 17:54:16,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:54:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 1579 states, 1153 states have (on average 1.4388551604509974) internal successors, (1659), 1182 states have internal predecessors, (1659), 348 states have call successors, (348), 77 states have call predecessors, (348), 76 states have return successors, (343), 341 states have call predecessors, (343), 343 states have call successors, (343) [2021-12-14 17:54:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-14 17:54:16,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:16,225 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:54:16,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash 149749609, now seen corresponding path program 1 times [2021-12-14 17:54:16,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:16,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226464689] [2021-12-14 17:54:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:16,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:54:16,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:16,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226464689] [2021-12-14 17:54:16,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226464689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:16,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:16,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:54:16,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84630137] [2021-12-14 17:54:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:16,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:54:16,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:16,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:54:16,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:54:16,840 INFO L87 Difference]: Start difference. First operand has 1579 states, 1153 states have (on average 1.4388551604509974) internal successors, (1659), 1182 states have internal predecessors, (1659), 348 states have call successors, (348), 77 states have call predecessors, (348), 76 states have return successors, (343), 341 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:54:18,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:54:20,927 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 17:54:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:25,080 INFO L93 Difference]: Finished difference Result 5019 states and 8047 transitions. [2021-12-14 17:54:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:54:25,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2021-12-14 17:54:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:25,114 INFO L225 Difference]: With dead ends: 5019 [2021-12-14 17:54:25,114 INFO L226 Difference]: Without dead ends: 3427 [2021-12-14 17:54:25,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 17:54:25,132 INFO L933 BasicCegarLoop]: 2791 mSDtfsCounter, 3012 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 915 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3228 SdHoareTripleChecker+Valid, 6365 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:25,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3228 Valid, 6365 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 1411 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-12-14 17:54:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2021-12-14 17:54:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2905. [2021-12-14 17:54:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2118 states have (on average 1.4291784702549575) internal successors, (3027), 2156 states have internal predecessors, (3027), 643 states have call successors, (643), 144 states have call predecessors, (643), 143 states have return successors, (638), 634 states have call predecessors, (638), 638 states have call successors, (638) [2021-12-14 17:54:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4308 transitions. [2021-12-14 17:54:25,321 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4308 transitions. Word has length 43 [2021-12-14 17:54:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:25,322 INFO L470 AbstractCegarLoop]: Abstraction has 2905 states and 4308 transitions. [2021-12-14 17:54:25,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:54:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4308 transitions. [2021-12-14 17:54:25,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 17:54:25,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:25,335 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:54:25,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:54:25,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 523415031, now seen corresponding path program 1 times [2021-12-14 17:54:25,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678034941] [2021-12-14 17:54:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:25,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:54:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:54:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:54:25,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:25,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678034941] [2021-12-14 17:54:25,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678034941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:25,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:25,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:54:25,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194953489] [2021-12-14 17:54:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:25,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:54:25,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:54:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:54:25,693 INFO L87 Difference]: Start difference. First operand 2905 states and 4308 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:54:27,773 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 17:54:29,819 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 [] [2021-12-14 17:54:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:38,672 INFO L93 Difference]: Finished difference Result 6810 states and 10600 transitions. [2021-12-14 17:54:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:54:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-12-14 17:54:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:38,748 INFO L225 Difference]: With dead ends: 6810 [2021-12-14 17:54:38,748 INFO L226 Difference]: Without dead ends: 6797 [2021-12-14 17:54:38,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:54:38,769 INFO L933 BasicCegarLoop]: 2337 mSDtfsCounter, 5081 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 3731 mSolverCounterSat, 2529 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 6262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2529 IncrementalHoareTripleChecker+Valid, 3731 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:38,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5414 Valid, 4460 Invalid, 6262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2529 Valid, 3731 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2021-12-14 17:54:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2021-12-14 17:54:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5755. [2021-12-14 17:54:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5755 states, 4201 states have (on average 1.4310878362294692) internal successors, (6012), 4274 states have internal predecessors, (6012), 1271 states have call successors, (1271), 285 states have call predecessors, (1271), 282 states have return successors, (1266), 1255 states have call predecessors, (1266), 1266 states have call successors, (1266) [2021-12-14 17:54:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8549 transitions. [2021-12-14 17:54:39,072 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8549 transitions. Word has length 66 [2021-12-14 17:54:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:39,072 INFO L470 AbstractCegarLoop]: Abstraction has 5755 states and 8549 transitions. [2021-12-14 17:54:39,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:54:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8549 transitions. [2021-12-14 17:54:39,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-14 17:54:39,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:39,078 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:54:39,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:54:39,079 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:39,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash -954625062, now seen corresponding path program 1 times [2021-12-14 17:54:39,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:39,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303000702] [2021-12-14 17:54:39,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:39,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:54:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:54:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:54:39,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:39,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303000702] [2021-12-14 17:54:39,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303000702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:39,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:39,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:54:39,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640563800] [2021-12-14 17:54:39,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:39,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:54:39,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:54:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:54:39,390 INFO L87 Difference]: Start difference. First operand 5755 states and 8549 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 17:54:41,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:54:43,579 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 [] [2021-12-14 17:54:50,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:54:50,546 INFO L93 Difference]: Finished difference Result 12927 states and 19855 transitions. [2021-12-14 17:54:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:54:50,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-12-14 17:54:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:54:50,584 INFO L225 Difference]: With dead ends: 12927 [2021-12-14 17:54:50,585 INFO L226 Difference]: Without dead ends: 7185 [2021-12-14 17:54:50,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:54:50,609 INFO L933 BasicCegarLoop]: 2462 mSDtfsCounter, 4151 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 2147 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4338 SdHoareTripleChecker+Valid, 5292 SdHoareTripleChecker+Invalid, 5461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2147 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:54:50,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4338 Valid, 5292 Invalid, 5461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2147 Valid, 3312 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2021-12-14 17:54:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7185 states. [2021-12-14 17:54:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7185 to 5755. [2021-12-14 17:54:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5755 states, 4201 states have (on average 1.430611759104975) internal successors, (6010), 4274 states have internal predecessors, (6010), 1271 states have call successors, (1271), 285 states have call predecessors, (1271), 282 states have return successors, (1266), 1255 states have call predecessors, (1266), 1266 states have call successors, (1266) [2021-12-14 17:54:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8547 transitions. [2021-12-14 17:54:50,814 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8547 transitions. Word has length 67 [2021-12-14 17:54:50,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:54:50,816 INFO L470 AbstractCegarLoop]: Abstraction has 5755 states and 8547 transitions. [2021-12-14 17:54:50,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 17:54:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8547 transitions. [2021-12-14 17:54:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-14 17:54:50,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:54:50,821 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:54:50,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:54:50,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:54:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:54:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -892585448, now seen corresponding path program 1 times [2021-12-14 17:54:50,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:54:50,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230235958] [2021-12-14 17:54:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:54:50,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:54:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:54:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:54:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:54:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:54:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:54:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:54:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:54:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:54:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:54:51,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:54:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230235958] [2021-12-14 17:54:51,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230235958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:54:51,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:54:51,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:54:51,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456727788] [2021-12-14 17:54:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:54:51,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:54:51,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:54:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:54:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:54:51,106 INFO L87 Difference]: Start difference. First operand 5755 states and 8547 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)