./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-dev-e19ca92 [2021-12-22 14:47:52,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:47:52,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:47:52,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:47:52,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:47:52,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:47:52,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:47:52,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:47:52,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:47:52,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:47:52,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:47:52,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:47:52,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:47:52,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:47:52,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:47:52,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:47:52,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:47:52,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:47:52,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:47:52,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:47:52,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:47:52,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:47:52,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:47:52,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:47:52,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:47:52,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:47:52,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:47:52,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:47:52,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:47:52,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:47:52,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:47:52,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:47:52,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:47:52,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:47:52,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:47:52,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:47:52,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:47:52,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:47:52,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:47:52,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:47:52,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:47:52,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:47:52,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:47:52,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:47:52,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:47:52,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:47:52,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:47:52,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:47:52,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:47:52,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:47:52,747 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:47:52,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:47:52,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:47:52,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:47:52,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:47:52,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:47:52,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:47:52,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:47:52,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:47:52,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:47:52,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:47:52,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:47:52,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:47:52,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:47:52,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:47:52,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:47:52,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:47:52,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:47:52,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:47:52,751 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:47:52,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:47:52,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:47:52,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:47:52,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2021-12-22 14:47:52,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:47:52,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:47:52,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:47:52,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:47:52,991 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:47:52,992 INFO L432 ainManager$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 [2021-12-22 14:47:53,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0c54620/7d1ca48f324f47d0b509fab1c126a006/FLAGabf0f19b4 [2021-12-22 14:47:53,640 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:47:53,641 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 [2021-12-22 14:47:53,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0c54620/7d1ca48f324f47d0b509fab1c126a006/FLAGabf0f19b4 [2021-12-22 14:47:54,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d0c54620/7d1ca48f324f47d0b509fab1c126a006 [2021-12-22 14:47:54,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:47:54,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:47:54,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:47:54,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:47:54,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:47:54,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:47:54" (1/1) ... [2021-12-22 14:47:54,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:54, skipping insertion in model container [2021-12-22 14:47:54,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:47:54" (1/1) ... [2021-12-22 14:47:54,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:47:54,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:47:54,771 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] [2021-12-22 14:47:55,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:47:55,133 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:47:55,239 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] [2021-12-22 14:47:55,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:47:55,500 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:47:55,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55 WrapperNode [2021-12-22 14:47:55,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:47:55,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:47:55,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:47:55,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:47:55,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,684 INFO L137 Inliner]: procedures = 204, calls = 2153, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 4781 [2021-12-22 14:47:55,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:47:55,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:47:55,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:47:55,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:47:55,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:47:55,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:47:55,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:47:55,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:47:55,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (1/1) ... [2021-12-22 14:47:55,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:47:55,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:47:55,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 14:47:55,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 14:47:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-22 14:47:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-22 14:47:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-22 14:47:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-22 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-22 14:47:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-22 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-22 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:47:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:47:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-22 14:47:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-22 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-22 14:47:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-22 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 14:47:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:47:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:47:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-22 14:47:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-22 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-22 14:47:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-22 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-22 14:47:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-22 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-22 14:47:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-22 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:47:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:47:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-22 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-22 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-22 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-22 14:47:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:47:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-22 14:47:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-22 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-22 14:47:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-22 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-22 14:47:56,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-22 14:47:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-22 14:47:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-22 14:47:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-22 14:47:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-22 14:47:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-22 14:47:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-22 14:47:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:47:56,019 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:47:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:47:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-22 14:47:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-22 14:47:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-22 14:47:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-22 14:47:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-22 14:47:56,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-22 14:47:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:47:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-22 14:47:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-22 14:47:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:47:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:47:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:47:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-22 14:47:56,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-22 14:47:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:47:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-22 14:47:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-22 14:47:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2021-12-22 14:47:56,023 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2021-12-22 14:47:56,023 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 14:47:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 14:47:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-22 14:47:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-22 14:47:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-22 14:47:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-22 14:47:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 14:47:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 14:47:56,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_reg [2021-12-22 14:47:56,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_reg [2021-12-22 14:47:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 14:47:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 14:47:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:47:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:47:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:47:56,025 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:47:56,025 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:47:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:47:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-22 14:47:56,026 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-22 14:47:56,026 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 14:47:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 14:47:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-22 14:47:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-22 14:47:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:47:56,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:47:56,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:47:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 14:47:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 14:47:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:47:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:47:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-22 14:47:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-22 14:47:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-22 14:47:56,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-22 14:47:56,028 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-22 14:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-22 14:47:56,029 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-22 14:47:56,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-22 14:47:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 14:47:56,030 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 14:47:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:47:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 14:47:56,032 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 14:47:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_der [2021-12-22 14:47:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_der [2021-12-22 14:47:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-22 14:47:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-22 14:47:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-22 14:47:56,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-22 14:47:56,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:47:56,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:47:56,038 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-22 14:47:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-22 14:47:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-22 14:47:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-22 14:47:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-22 14:47:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-22 14:47:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:47:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-12-22 14:47:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-22 14:47:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-22 14:47:56,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:47:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-22 14:47:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-22 14:47:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:47:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 14:47:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-22 14:47:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-22 14:47:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-22 14:47:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-22 14:47:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-22 14:47:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-22 14:47:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-12-22 14:47:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-12-22 14:47:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-22 14:47:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-22 14:47:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-22 14:47:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-22 14:47:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-22 14:47:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-22 14:47:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 14:47:56,041 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 14:47:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-22 14:47:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-22 14:47:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-22 14:47:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-22 14:47:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-22 14:47:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-22 14:47:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:47:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-22 14:47:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-22 14:47:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-22 14:47:56,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-22 14:47:56,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:47:56,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:47:56,690 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:47:56,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:47:56,980 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:48:24,773 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:48:24,791 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:48:24,792 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 14:48:24,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:24 BoogieIcfgContainer [2021-12-22 14:48:24,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:48:24,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:48:24,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:48:24,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:48:24,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:47:54" (1/3) ... [2021-12-22 14:48:24,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1f07d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:24, skipping insertion in model container [2021-12-22 14:48:24,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:47:55" (2/3) ... [2021-12-22 14:48:24,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1f07d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:48:24, skipping insertion in model container [2021-12-22 14:48:24,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:48:24" (3/3) ... [2021-12-22 14:48:24,801 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-12-22 14:48:24,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:48:24,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:48:24,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:48:24,858 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 14:48:24,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:48:24,894 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) [2021-12-22 14:48:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 14:48:24,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:24,901 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] [2021-12-22 14:48:24,901 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 149749609, now seen corresponding path program 1 times [2021-12-22 14:48:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:24,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155846557] [2021-12-22 14:48:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:24,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:25,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:48:25,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155846557] [2021-12-22 14:48:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155846557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:25,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:25,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:48:25,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107109719] [2021-12-22 14:48:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:25,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:48:25,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:48:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:48:25,569 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) [2021-12-22 14:48:27,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:29,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:33,298 INFO L93 Difference]: Finished difference Result 5019 states and 8047 transitions. [2021-12-22 14:48:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:48:33,301 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 [2021-12-22 14:48:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:33,344 INFO L225 Difference]: With dead ends: 5019 [2021-12-22 14:48:33,344 INFO L226 Difference]: Without dead ends: 3427 [2021-12-22 14:48:33,365 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 [2021-12-22 14:48:33,371 INFO L933 BasicCegarLoop]: 2795 mSDtfsCounter, 3012 mSDsluCounter, 3572 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 915 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3219 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:33,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3219 Valid, 6367 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 1411 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-12-22 14:48:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2021-12-22 14:48:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2905. [2021-12-22 14:48:33,528 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) [2021-12-22 14:48:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4308 transitions. [2021-12-22 14:48:33,562 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4308 transitions. Word has length 43 [2021-12-22 14:48:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:33,562 INFO L470 AbstractCegarLoop]: Abstraction has 2905 states and 4308 transitions. [2021-12-22 14:48:33,563 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) [2021-12-22 14:48:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4308 transitions. [2021-12-22 14:48:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 14:48:33,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:33,571 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] [2021-12-22 14:48:33,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:48:33,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:33,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash 523415031, now seen corresponding path program 1 times [2021-12-22 14:48:33,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:33,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907627728] [2021-12-22 14:48:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:33,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:48:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:48:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:48:33,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:33,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907627728] [2021-12-22 14:48:33,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907627728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:33,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:33,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:48:33,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555659897] [2021-12-22 14:48:33,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:33,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:48:33,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:48:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:48:33,925 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) [2021-12-22 14:48:35,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:37,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:45,901 INFO L93 Difference]: Finished difference Result 6810 states and 10600 transitions. [2021-12-22 14:48:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:48:45,902 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 [2021-12-22 14:48:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:45,969 INFO L225 Difference]: With dead ends: 6810 [2021-12-22 14:48:45,979 INFO L226 Difference]: Without dead ends: 6797 [2021-12-22 14:48:45,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:48:45,990 INFO L933 BasicCegarLoop]: 2392 mSDtfsCounter, 4956 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 2484 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 4646 SdHoareTripleChecker+Invalid, 6445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2484 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:45,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5290 Valid, 4646 Invalid, 6445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2484 Valid, 3959 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-12-22 14:48:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2021-12-22 14:48:46,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5755. [2021-12-22 14:48:46,185 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) [2021-12-22 14:48:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8549 transitions. [2021-12-22 14:48:46,207 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8549 transitions. Word has length 66 [2021-12-22 14:48:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:46,208 INFO L470 AbstractCegarLoop]: Abstraction has 5755 states and 8549 transitions. [2021-12-22 14:48:46,208 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) [2021-12-22 14:48:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8549 transitions. [2021-12-22 14:48:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-22 14:48:46,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:46,215 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] [2021-12-22 14:48:46,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:48:46,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash -954625062, now seen corresponding path program 1 times [2021-12-22 14:48:46,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:46,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024468223] [2021-12-22 14:48:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:46,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:48:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:48:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:48:46,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:46,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024468223] [2021-12-22 14:48:46,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024468223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:46,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:46,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:48:46,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254177120] [2021-12-22 14:48:46,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:46,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:48:46,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:46,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:48:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:48:46,542 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) [2021-12-22 14:48:48,624 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 [] [2021-12-22 14:48:50,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:48:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:48:57,111 INFO L93 Difference]: Finished difference Result 12927 states and 19855 transitions. [2021-12-22 14:48:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:48:57,112 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 [2021-12-22 14:48:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:48:57,149 INFO L225 Difference]: With dead ends: 12927 [2021-12-22 14:48:57,150 INFO L226 Difference]: Without dead ends: 7185 [2021-12-22 14:48:57,173 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 [2021-12-22 14:48:57,176 INFO L933 BasicCegarLoop]: 2468 mSDtfsCounter, 4153 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 2133 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4333 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 5476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2133 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:48:57,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4333 Valid, 5312 Invalid, 5476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2133 Valid, 3341 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-12-22 14:48:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7185 states. [2021-12-22 14:48:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7185 to 5755. [2021-12-22 14:48:57,355 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) [2021-12-22 14:48:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8547 transitions. [2021-12-22 14:48:57,373 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8547 transitions. Word has length 67 [2021-12-22 14:48:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:48:57,375 INFO L470 AbstractCegarLoop]: Abstraction has 5755 states and 8547 transitions. [2021-12-22 14:48:57,375 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) [2021-12-22 14:48:57,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8547 transitions. [2021-12-22 14:48:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-22 14:48:57,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:48:57,379 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] [2021-12-22 14:48:57,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:48:57,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:48:57,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:48:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash -892585448, now seen corresponding path program 1 times [2021-12-22 14:48:57,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:48:57,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337314836] [2021-12-22 14:48:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:48:57,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:48:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:48:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:48:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:48:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-22 14:48:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:48:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 14:48:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 14:48:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:48:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:48:57,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:48:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337314836] [2021-12-22 14:48:57,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337314836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:48:57,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:48:57,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:48:57,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147471185] [2021-12-22 14:48:57,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:48:57,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:48:57,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:48:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:48:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:48:57,713 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) [2021-12-22 14:48:59,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:49:01,803 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 []