./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.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 fa270183f30c4108ea2b2e80e3a005f959ee3ae47a4a31957eaa79c7226d5c4e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:21:19,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:21:19,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:21:20,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:21:20,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:21:20,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:21:20,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:21:20,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:21:20,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:21:20,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:21:20,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:21:20,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:21:20,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:21:20,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:21:20,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:21:20,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:21:20,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:21:20,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:21:20,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:21:20,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:21:20,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:21:20,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:21:20,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:21:20,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:21:20,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:21:20,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:21:20,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:21:20,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:21:20,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:21:20,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:21:20,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:21:20,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:21:20,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:21:20,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:21:20,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:21:20,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:21:20,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:21:20,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:21:20,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:21:20,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:21:20,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:21:20,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:21:20,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:21:20,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:21:20,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:21:20,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:21:20,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:21:20,120 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:21:20,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:21:20,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:21:20,121 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:21:20,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:21:20,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:21:20,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:21:20,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:21:20,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:21:20,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:21:20,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:21:20,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:21:20,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:21:20,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:21:20,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:21:20,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:21:20,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:21:20,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:21:20,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:21:20,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:21:20,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:21:20,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:21:20,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:21:20,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:21:20,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:21:20,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:21:20,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa270183f30c4108ea2b2e80e3a005f959ee3ae47a4a31957eaa79c7226d5c4e [2021-12-16 04:21:20,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:21:20,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:21:20,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:21:20,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:21:20,354 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:21:20,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2021-12-16 04:21:20,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4abb526a7/d6b1782387b947eaadc8b84a5502b590/FLAG187287e1a [2021-12-16 04:21:21,139 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:21:21,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2021-12-16 04:21:21,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4abb526a7/d6b1782387b947eaadc8b84a5502b590/FLAG187287e1a [2021-12-16 04:21:21,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4abb526a7/d6b1782387b947eaadc8b84a5502b590 [2021-12-16 04:21:21,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:21:21,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:21:21,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:21:21,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:21:21,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:21:21,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:21:21" (1/1) ... [2021-12-16 04:21:21,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a89397f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:21, skipping insertion in model container [2021-12-16 04:21:21,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:21:21" (1/1) ... [2021-12-16 04:21:21,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:21:21,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:21:22,938 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i[277190,277203] [2021-12-16 04:21:23,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:21:23,092 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:21:23,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i[277190,277203] [2021-12-16 04:21:23,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:21:23,386 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:21:23,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23 WrapperNode [2021-12-16 04:21:23,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:21:23,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:21:23,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:21:23,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:21:23,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,553 INFO L137 Inliner]: procedures = 225, calls = 1809, calls flagged for inlining = 92, calls inlined = 81, statements flattened = 3779 [2021-12-16 04:21:23,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:21:23,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:21:23,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:21:23,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:21:23,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:21:23,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:21:23,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:21:23,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:21:23,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (1/1) ... [2021-12-16 04:21:23,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:21:23,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:21:23,894 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) [2021-12-16 04:21:23,896 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 [2021-12-16 04:21:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-16 04:21:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-16 04:21:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-16 04:21:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-16 04:21:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:21:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:21:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:21:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:21:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-16 04:21:23,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-16 04:21:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_semusb_of_ttusb [2021-12-16 04:21:23,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_semusb_of_ttusb [2021-12-16 04:21:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-16 04:21:23,930 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-16 04:21:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:21:23,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:21:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:21:23,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:21:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:21:23,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:21:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2021-12-16 04:21:23,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2021-12-16 04:21:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 04:21:23,932 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 04:21:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:21:23,932 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:21:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-16 04:21:23,932 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-16 04:21:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-16 04:21:23,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-16 04:21:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:21:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 04:21:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:21:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure tda1004x_writereg [2021-12-16 04:21:23,934 INFO L138 BoogieDeclarations]: Found implementation of procedure tda1004x_writereg [2021-12-16 04:21:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-16 04:21:23,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-16 04:21:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:21:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-16 04:21:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-16 04:21:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:21:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_semi2c_of_ttusb [2021-12-16 04:21:23,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_semi2c_of_ttusb [2021-12-16 04:21:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 04:21:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 04:21:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-16 04:21:23,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-16 04:21:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:21:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-16 04:21:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-16 04:21:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-16 04:21:23,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-16 04:21:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:21:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure master_xfer [2021-12-16 04:21:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure master_xfer [2021-12-16 04:21:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-16 04:21:23,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-16 04:21:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:21:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2021-12-16 04:21:23,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2021-12-16 04:21:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:21:23,940 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:21:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-16 04:21:23,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2021-12-16 04:21:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 04:21:23,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 04:21:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_stop_iso_xfer [2021-12-16 04:21:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_stop_iso_xfer [2021-12-16 04:21:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 04:21:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 04:21:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:21:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-12-16 04:21:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-12-16 04:21:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-16 04:21:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-16 04:21:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_cmd [2021-12-16 04:21:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_cmd [2021-12-16 04:21:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:21:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-16 04:21:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-16 04:21:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:21:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 04:21:23,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 04:21:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:21:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2021-12-16 04:21:23,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2021-12-16 04:21:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-16 04:21:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-16 04:21:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-16 04:21:23,945 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-16 04:21:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_adapter [2021-12-16 04:21:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_adapter [2021-12-16 04:21:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_result [2021-12-16 04:21:23,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_result [2021-12-16 04:21:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_semi2c_of_ttusb [2021-12-16 04:21:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_semi2c_of_ttusb [2021-12-16 04:21:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:21:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_free_iso_urbs [2021-12-16 04:21:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_free_iso_urbs [2021-12-16 04:21:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:21:23,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:21:24,549 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:21:24,558 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:21:25,189 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:21:34,396 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:21:34,409 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:21:34,409 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 04:21:34,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:21:34 BoogieIcfgContainer [2021-12-16 04:21:34,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:21:34,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:21:34,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:21:34,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:21:34,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:21:21" (1/3) ... [2021-12-16 04:21:34,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04d8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:21:34, skipping insertion in model container [2021-12-16 04:21:34,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:21:23" (2/3) ... [2021-12-16 04:21:34,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04d8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:21:34, skipping insertion in model container [2021-12-16 04:21:34,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:21:34" (3/3) ... [2021-12-16 04:21:34,420 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--media--usb--ttusb-budget--dvb-ttusb-budget.ko-entry_point.cil.out.i [2021-12-16 04:21:34,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:21:34,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:21:34,468 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:21:34,480 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 [2021-12-16 04:21:34,481 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:21:34,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 838 states, 620 states have (on average 1.4016129032258065) internal successors, (869), 648 states have internal predecessors, (869), 175 states have call successors, (175), 42 states have call predecessors, (175), 41 states have return successors, (169), 169 states have call predecessors, (169), 169 states have call successors, (169) [2021-12-16 04:21:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 04:21:34,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:34,533 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:21:34,534 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1865142948, now seen corresponding path program 1 times [2021-12-16 04:21:34,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:34,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800668344] [2021-12-16 04:21:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:34,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 04:21:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 04:21:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 04:21:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-12-16 04:21:35,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:35,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800668344] [2021-12-16 04:21:35,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800668344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:35,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:35,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:21:35,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161996586] [2021-12-16 04:21:35,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:35,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:21:35,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:21:35,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:21:35,636 INFO L87 Difference]: Start difference. First operand has 838 states, 620 states have (on average 1.4016129032258065) internal successors, (869), 648 states have internal predecessors, (869), 175 states have call successors, (175), 42 states have call predecessors, (175), 41 states have return successors, (169), 169 states have call predecessors, (169), 169 states have call successors, (169) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:21:40,724 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 [] [2021-12-16 04:21:42,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:45,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:47,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:49,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:21:52,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:21:52,789 INFO L93 Difference]: Finished difference Result 1710 states and 2586 transitions. [2021-12-16 04:21:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:21:52,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 146 [2021-12-16 04:21:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:21:52,806 INFO L225 Difference]: With dead ends: 1710 [2021-12-16 04:21:52,806 INFO L226 Difference]: Without dead ends: 864 [2021-12-16 04:21:52,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:52,818 INFO L933 BasicCegarLoop]: 1169 mSDtfsCounter, 278 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 385 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-12-16 04:21:52,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 3072 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 845 Invalid, 5 Unknown, 0 Unchecked, 16.9s Time] [2021-12-16 04:21:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-12-16 04:21:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 825. [2021-12-16 04:21:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 615 states have (on average 1.3853658536585365) internal successors, (852), 635 states have internal predecessors, (852), 169 states have call successors, (169), 41 states have call predecessors, (169), 40 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2021-12-16 04:21:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1180 transitions. [2021-12-16 04:21:52,907 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1180 transitions. Word has length 146 [2021-12-16 04:21:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:21:52,908 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 1180 transitions. [2021-12-16 04:21:52,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:21:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1180 transitions. [2021-12-16 04:21:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 04:21:52,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:21:52,915 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:21:52,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:21:52,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:21:52,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:21:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -218311248, now seen corresponding path program 1 times [2021-12-16 04:21:52,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:21:52,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986302066] [2021-12-16 04:21:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:21:52,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:21:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:21:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:21:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:21:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:21:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:21:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:21:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:21:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 04:21:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 04:21:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 04:21:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:21:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:21:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-12-16 04:21:53,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:21:53,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986302066] [2021-12-16 04:21:53,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986302066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:21:53,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:21:53,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:21:53,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943526316] [2021-12-16 04:21:53,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:21:53,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:21:53,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:21:53,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:21:53,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:21:53,537 INFO L87 Difference]: Start difference. First operand 825 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-16 04:21:58,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:02,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:04,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:07,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:09,495 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 [] [2021-12-16 04:22:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:22:11,827 INFO L93 Difference]: Finished difference Result 2474 states and 3611 transitions. [2021-12-16 04:22:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 04:22:11,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 146 [2021-12-16 04:22:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:22:11,843 INFO L225 Difference]: With dead ends: 2474 [2021-12-16 04:22:11,844 INFO L226 Difference]: Without dead ends: 1675 [2021-12-16 04:22:11,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-16 04:22:11,850 INFO L933 BasicCegarLoop]: 1300 mSDtfsCounter, 1628 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 820 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 3656 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-12-16 04:22:11,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 3656 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [820 Valid, 1026 Invalid, 5 Unknown, 0 Unchecked, 18.0s Time] [2021-12-16 04:22:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2021-12-16 04:22:11,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1593. [2021-12-16 04:22:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1197 states have (on average 1.3893065998329157) internal successors, (1663), 1228 states have internal predecessors, (1663), 316 states have call successors, (316), 80 states have call predecessors, (316), 79 states have return successors, (306), 306 states have call predecessors, (306), 306 states have call successors, (306) [2021-12-16 04:22:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2285 transitions. [2021-12-16 04:22:11,932 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2285 transitions. Word has length 146 [2021-12-16 04:22:11,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:22:11,934 INFO L470 AbstractCegarLoop]: Abstraction has 1593 states and 2285 transitions. [2021-12-16 04:22:11,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-16 04:22:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2285 transitions. [2021-12-16 04:22:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-16 04:22:11,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:22:11,938 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:22:11,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:22:11,938 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:22:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:22:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1388631459, now seen corresponding path program 1 times [2021-12-16 04:22:11,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:22:11,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127329303] [2021-12-16 04:22:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:22:11,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:22:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:22:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:22:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:22:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:22:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 04:22:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 04:22:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:22:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-16 04:22:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 04:22:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-16 04:22:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:22:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 04:22:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 04:22:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:22:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2021-12-16 04:22:12,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:22:12,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127329303] [2021-12-16 04:22:12,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127329303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:22:12,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:22:12,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 04:22:12,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090769388] [2021-12-16 04:22:12,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:22:12,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 04:22:12,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:22:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 04:22:12,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:22:12,441 INFO L87 Difference]: Start difference. First operand 1593 states and 2285 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 04:22:18,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:20,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:22,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:24,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:27,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:22:29,150 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 []