./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 ff03de63 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-ff03de6 [2021-12-21 16:21:12,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:21:12,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:21:13,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:21:13,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:21:13,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:21:13,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:21:13,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:21:13,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:21:13,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:21:13,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:21:13,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:21:13,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:21:13,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:21:13,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:21:13,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:21:13,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:21:13,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:21:13,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:21:13,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:21:13,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:21:13,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:21:13,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:21:13,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:21:13,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:21:13,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:21:13,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:21:13,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:21:13,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:21:13,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:21:13,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:21:13,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:21:13,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:21:13,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:21:13,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:21:13,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:21:13,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:21:13,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:21:13,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:21:13,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:21:13,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:21:13,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:21:13,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:21:13,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:21:13,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:21:13,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:21:13,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:21:13,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:21:13,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:21:13,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:21:13,072 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:21:13,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:21:13,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:21:13,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:21:13,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:21:13,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:21:13,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:21:13,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:21:13,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:21:13,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:21:13,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:21:13,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:21:13,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:21:13,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:21:13,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:21:13,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:21:13,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:21:13,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:21:13,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:21:13,080 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:21:13,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:21:13,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:21:13,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:21:13,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2021-12-21 16:21:13,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:21:13,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:21:13,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:21:13,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:21:13,363 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:21:13,364 INFO L432 ainManager$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 [2021-12-21 16:21:13,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8d17af6/bed16b546be54acaa5755d228366a76f/FLAGbb74ced7e [2021-12-21 16:21:14,094 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:21:14,095 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 [2021-12-21 16:21:14,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8d17af6/bed16b546be54acaa5755d228366a76f/FLAGbb74ced7e [2021-12-21 16:21:14,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8d17af6/bed16b546be54acaa5755d228366a76f [2021-12-21 16:21:14,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:21:14,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:21:14,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:21:14,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:21:14,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:21:14,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:21:14" (1/1) ... [2021-12-21 16:21:14,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b31072d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:14, skipping insertion in model container [2021-12-21 16:21:14,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:21:14" (1/1) ... [2021-12-21 16:21:14,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:21:14,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:21:15,381 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] [2021-12-21 16:21:15,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:21:15,818 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:21:15,940 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] [2021-12-21 16:21:16,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:21:16,235 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:21:16,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16 WrapperNode [2021-12-21 16:21:16,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:21:16,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:21:16,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:21:16,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:21:16,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,485 INFO L137 Inliner]: procedures = 204, calls = 2153, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 4781 [2021-12-21 16:21:16,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:21:16,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:21:16,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:21:16,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:21:16,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:21:16,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:21:16,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:21:16,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:21:16,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (1/1) ... [2021-12-21 16:21:16,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:21:16,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:21:16,793 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) [2021-12-21 16:21:16,815 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 [2021-12-21 16:21:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-21 16:21:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-21 16:21:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_in_callback [2021-12-21 16:21:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_in_callback [2021-12-21 16:21:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 16:21:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 16:21:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-21 16:21:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:21:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:21:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:21:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:21:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-21 16:21:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-21 16:21:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure ti_throttle [2021-12-21 16:21:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_throttle [2021-12-21 16:21:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-21 16:21:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-21 16:21:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:21:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:21:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ti_bulk_out_callback [2021-12-21 16:21:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_bulk_out_callback [2021-12-21 16:21:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-21 16:21:16,833 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-21 16:21:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-21 16:21:16,834 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-21 16:21:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_mcr [2021-12-21 16:21:16,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_mcr [2021-12-21 16:21:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:21:16,834 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:21:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:21:16,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:21:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure ti_startup [2021-12-21 16:21:16,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_startup [2021-12-21 16:21:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:21:16,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:21:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure ti_ioctl [2021-12-21 16:21:16,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_ioctl [2021-12-21 16:21:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:21:16,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:21:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_2 [2021-12-21 16:21:16,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_2 [2021-12-21 16:21:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2021-12-21 16:21:16,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2021-12-21 16:21:16,836 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmget [2021-12-21 16:21:16,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmget [2021-12-21 16:21:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-12-21 16:21:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-12-21 16:21:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_free [2021-12-21 16:21:16,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_free [2021-12-21 16:21:16,837 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2021-12-21 16:21:16,838 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2021-12-21 16:21:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:21:16,838 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:21:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:21:16,838 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2021-12-21 16:21:16,839 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2021-12-21 16:21:16,839 INFO L130 BoogieDeclarations]: Found specification of procedure ti_break [2021-12-21 16:21:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_break [2021-12-21 16:21:16,840 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16s [2021-12-21 16:21:16,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16s [2021-12-21 16:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-21 16:21:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-21 16:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:21:16,841 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:21:16,841 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write [2021-12-21 16:21:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write [2021-12-21 16:21:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:21:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure ti_restart_read [2021-12-21 16:21:16,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_restart_read [2021-12-21 16:21:16,842 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2021-12-21 16:21:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2021-12-21 16:21:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-21 16:21:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-21 16:21:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure ti_release [2021-12-21 16:21:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_release [2021-12-21 16:21:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-21 16:21:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-21 16:21:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:21:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:21:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_reg [2021-12-21 16:21:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_reg [2021-12-21 16:21:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:21:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:21:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-21 16:21:16,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-21 16:21:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:21:16,845 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:21:16,845 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:21:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:21:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2021-12-21 16:21:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2021-12-21 16:21:16,846 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-21 16:21:16,846 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-21 16:21:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-21 16:21:16,847 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-21 16:21:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:21:16,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:21:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:21:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-21 16:21:16,848 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-21 16:21:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:21:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:21:16,848 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2021-12-21 16:21:16,849 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2021-12-21 16:21:16,849 INFO L130 BoogieDeclarations]: Found specification of procedure ti_command_out_sync [2021-12-21 16:21:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_command_out_sync [2021-12-21 16:21:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:21:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:21:16,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:21:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:21:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure ti_open [2021-12-21 16:21:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_open [2021-12-21 16:21:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure ti_tiocmset [2021-12-21 16:21:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_tiocmset [2021-12-21 16:21:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:21:16,852 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:21:16,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:21:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-21 16:21:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-21 16:21:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_s_der [2021-12-21 16:21:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_s_der [2021-12-21 16:21:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_byte [2021-12-21 16:21:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_byte [2021-12-21 16:21:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ti_chars_in_buffer [2021-12-21 16:21:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_chars_in_buffer [2021-12-21 16:21:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:21:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:21:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-21 16:21:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-21 16:21:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2021-12-21 16:21:16,862 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2021-12-21 16:21:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure ti_write_room [2021-12-21 16:21:16,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_write_room [2021-12-21 16:21:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:21:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-12-21 16:21:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure ti_interrupt_callback [2021-12-21 16:21:16,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_interrupt_callback [2021-12-21 16:21:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:21:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2021-12-21 16:21:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2021-12-21 16:21:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:21:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:21:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure ti_close [2021-12-21 16:21:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_close [2021-12-21 16:21:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-21 16:21:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-21 16:21:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 16:21:16,864 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 16:21:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-12-21 16:21:16,865 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-12-21 16:21:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-21 16:21:16,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-21 16:21:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure ti_unthrottle [2021-12-21 16:21:16,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_unthrottle [2021-12-21 16:21:16,865 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-21 16:21:16,865 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-21 16:21:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-21 16:21:16,866 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-21 16:21:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure ti_send [2021-12-21 16:21:16,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_send [2021-12-21 16:21:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-21 16:21:16,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-21 16:21:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure ti_drain [2021-12-21 16:21:16,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_drain [2021-12-21 16:21:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:21:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure ti_set_termios [2021-12-21 16:21:16,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ti_set_termios [2021-12-21 16:21:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-21 16:21:16,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-21 16:21:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:21:16,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:21:17,610 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:21:17,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:21:18,037 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:21:48,371 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:21:48,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:21:48,395 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 16:21:48,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:21:48 BoogieIcfgContainer [2021-12-21 16:21:48,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:21:48,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:21:48,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:21:48,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:21:48,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:21:14" (1/3) ... [2021-12-21 16:21:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f8ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:21:48, skipping insertion in model container [2021-12-21 16:21:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:21:16" (2/3) ... [2021-12-21 16:21:48,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0f8ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:21:48, skipping insertion in model container [2021-12-21 16:21:48,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:21:48" (3/3) ... [2021-12-21 16:21:48,406 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-12-21 16:21:48,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:21:48,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:21:48,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:21:48,484 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 [2021-12-21 16:21:48,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:21:48,527 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) [2021-12-21 16:21:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-21 16:21:48,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:21:48,534 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] [2021-12-21 16:21:48,534 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:21:48,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:21:48,538 INFO L85 PathProgramCache]: Analyzing trace with hash 149749609, now seen corresponding path program 1 times [2021-12-21 16:21:48,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:21:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514090213] [2021-12-21 16:21:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:21:48,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:21:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:21:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:49,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:21:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:21:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:21:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:49,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:21:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:21:49,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:21:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514090213] [2021-12-21 16:21:49,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514090213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:21:49,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:21:49,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:21:49,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220761909] [2021-12-21 16:21:49,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:21:49,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:21:49,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:21:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:21:49,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:21:49,450 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) [2021-12-21 16:21:51,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:53,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:21:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:21:59,267 INFO L93 Difference]: Finished difference Result 5019 states and 8047 transitions. [2021-12-21 16:21:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:21:59,269 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 [2021-12-21 16:21:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:21:59,317 INFO L225 Difference]: With dead ends: 5019 [2021-12-21 16:21:59,317 INFO L226 Difference]: Without dead ends: 3427 [2021-12-21 16:21:59,340 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 [2021-12-21 16:21:59,343 INFO L933 BasicCegarLoop]: 2629 mSDtfsCounter, 3092 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 950 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:21:59,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 6131 Invalid, 2354 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [950 Valid, 1402 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-12-21 16:21:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2021-12-21 16:21:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2905. [2021-12-21 16:21:59,531 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) [2021-12-21 16:21:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4308 transitions. [2021-12-21 16:21:59,571 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4308 transitions. Word has length 43 [2021-12-21 16:21:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:21:59,571 INFO L470 AbstractCegarLoop]: Abstraction has 2905 states and 4308 transitions. [2021-12-21 16:21:59,572 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) [2021-12-21 16:21:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4308 transitions. [2021-12-21 16:21:59,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 16:21:59,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:21:59,582 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] [2021-12-21 16:21:59,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:21:59,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:21:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:21:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash 523415031, now seen corresponding path program 1 times [2021-12-21 16:21:59,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:21:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066631837] [2021-12-21 16:21:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:21:59,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:21:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:21:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:21:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:21:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:21:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:21:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:21:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:21:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:21:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:21:59,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:21:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066631837] [2021-12-21 16:21:59,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066631837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:21:59,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:21:59,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:21:59,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253437853] [2021-12-21 16:21:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:21:59,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:21:59,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:21:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:21:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:22:00,000 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) [2021-12-21 16:22:02,057 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 [] [2021-12-21 16:22:04,093 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 []