./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.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 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:55:28,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:55:28,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:55:28,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:55:28,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:55:28,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:55:28,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:55:28,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:55:28,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:55:28,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:55:28,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:55:28,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:55:28,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:55:28,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:55:28,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:55:28,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:55:28,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:55:28,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:55:28,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:55:28,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:55:28,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:55:28,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:55:28,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:55:28,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:55:28,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:55:28,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:55:28,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:55:28,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:55:28,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:55:28,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:55:28,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:55:28,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:55:28,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:55:28,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:55:28,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:55:28,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:55:28,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:55:28,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:55:28,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:55:28,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:55:28,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:55:28,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:55:28,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:55:28,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:55:28,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:55:28,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:55:28,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:55:28,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:55:28,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:55:28,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:55:28,418 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:55:28,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:55:28,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:55:28,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:55:28,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:55:28,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:55:28,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:55:28,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:55:28,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:55:28,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:55:28,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:55:28,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:55:28,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:55:28,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:55:28,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:55:28,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:55:28,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:55:28,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:55:28,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:55:28,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:55:28,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:55:28,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:55:28,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:55:28,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d [2021-12-16 03:55:28,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:55:28,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:55:28,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:55:28,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:55:28,664 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:55:28,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-16 03:55:28,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c351e2c5/6877fda56d1e407aa99c839d5d6a5d3f/FLAG8fe3f77e9 [2021-12-16 03:55:29,416 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:55:29,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-16 03:55:29,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c351e2c5/6877fda56d1e407aa99c839d5d6a5d3f/FLAG8fe3f77e9 [2021-12-16 03:55:29,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c351e2c5/6877fda56d1e407aa99c839d5d6a5d3f [2021-12-16 03:55:29,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:55:29,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:55:29,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:55:29,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:55:29,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:55:29,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:55:29" (1/1) ... [2021-12-16 03:55:29,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a94bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:29, skipping insertion in model container [2021-12-16 03:55:29,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:55:29" (1/1) ... [2021-12-16 03:55:29,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:55:29,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:55:30,362 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-12-16 03:55:30,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:55:30,886 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:55:30,995 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-12-16 03:55:31,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:55:31,207 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:55:31,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31 WrapperNode [2021-12-16 03:55:31,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:55:31,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:55:31,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:55:31,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:55:31,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,411 INFO L137 Inliner]: procedures = 201, calls = 1494, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 2595 [2021-12-16 03:55:31,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:55:31,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:55:31,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:55:31,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:55:31,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:55:31,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:55:31,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:55:31,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:55:31,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (1/1) ... [2021-12-16 03:55:31,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:55:31,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:55:31,657 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 03:55:31,668 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 03:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-16 03:55:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-16 03:55:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-16 03:55:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-16 03:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_12 [2021-12-16 03:55:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_12 [2021-12-16 03:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:55:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 03:55:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 03:55:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-12-16 03:55:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-12-16 03:55:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-16 03:55:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-16 03:55:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-16 03:55:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-16 03:55:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-16 03:55:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-16 03:55:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:55:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:55:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_sec_feed [2021-12-16 03:55:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_sec_feed [2021-12-16 03:55:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-16 03:55:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-16 03:55:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-16 03:55:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-16 03:55:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-16 03:55:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-16 03:55:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:55:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:55:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:55:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:55:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 03:55:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 03:55:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:55:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:55:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-16 03:55:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-16 03:55:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-16 03:55:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-16 03:55:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:55:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:55:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_process_urb [2021-12-16 03:55:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_process_urb [2021-12-16 03:55:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:55:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-16 03:55:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-16 03:55:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-16 03:55:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-16 03:55:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:55:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 03:55:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 03:55:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_feed [2021-12-16 03:55:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_feed [2021-12-16 03:55:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:55:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:55:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-12-16 03:55:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-12-16 03:55:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-16 03:55:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-16 03:55:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-16 03:55:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-16 03:55:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_ts_feed [2021-12-16 03:55:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_ts_feed [2021-12-16 03:55:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-16 03:55:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-16 03:55:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:55:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:55:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-16 03:55:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-16 03:55:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-12-16 03:55:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-12-16 03:55:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 03:55:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 03:55:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-16 03:55:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-16 03:55:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-16 03:55:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-16 03:55:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-16 03:55:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-16 03:55:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-16 03:55:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-16 03:55:31,706 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-16 03:55:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-16 03:55:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:55:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 03:55:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 03:55:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-16 03:55:31,707 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-16 03:55:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-16 03:55:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-16 03:55:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:55:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-12-16 03:55:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-12-16 03:55:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2021-12-16 03:55:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2021-12-16 03:55:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-12-16 03:55:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-12-16 03:55:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-12-16 03:55:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-12-16 03:55:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-16 03:55:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-16 03:55:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-16 03:55:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-16 03:55:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:55:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:55:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:55:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 03:55:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 03:55:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 03:55:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 03:55:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:55:31,712 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:55:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-16 03:55:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-16 03:55:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-16 03:55:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-16 03:55:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:55:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-16 03:55:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-16 03:55:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-16 03:55:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-16 03:55:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:55:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:55:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-16 03:55:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-16 03:55:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-16 03:55:31,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-16 03:55:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:55:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:55:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 03:55:31,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 03:55:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_init_rc [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_init_rc [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-12-16 03:55:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_handle_irq [2021-12-16 03:55:31,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_handle_irq [2021-12-16 03:55:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-16 03:55:31,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-16 03:55:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:55:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:55:31,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:55:32,332 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:55:32,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:55:32,514 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 03:55:36,790 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-16 03:55:36,997 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:55:37,010 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:55:37,010 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:55:37,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:55:37 BoogieIcfgContainer [2021-12-16 03:55:37,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:55:37,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:55:37,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:55:37,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:55:37,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:55:29" (1/3) ... [2021-12-16 03:55:37,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b6e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:55:37, skipping insertion in model container [2021-12-16 03:55:37,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:55:31" (2/3) ... [2021-12-16 03:55:37,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b6e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:55:37, skipping insertion in model container [2021-12-16 03:55:37,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:55:37" (3/3) ... [2021-12-16 03:55:37,020 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-16 03:55:37,027 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:55:37,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:55:37,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:55:37,075 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 03:55:37,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:55:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 1061 states, 762 states have (on average 1.3267716535433072) internal successors, (1011), 789 states have internal predecessors, (1011), 231 states have call successors, (231), 68 states have call predecessors, (231), 66 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) [2021-12-16 03:55:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 03:55:37,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:55:37,131 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] [2021-12-16 03:55:37,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:55:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:55:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2031375709, now seen corresponding path program 1 times [2021-12-16 03:55:37,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:55:37,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430161658] [2021-12-16 03:55:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:55:37,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:55:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:55:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:55:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:55:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:55:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:55:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:55:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 03:55:37,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:55:37,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430161658] [2021-12-16 03:55:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430161658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:55:37,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:55:37,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:55:37,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018183348] [2021-12-16 03:55:37,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:55:37,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:55:37,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:55:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:55:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:55:37,792 INFO L87 Difference]: Start difference. First operand has 1061 states, 762 states have (on average 1.3267716535433072) internal successors, (1011), 789 states have internal predecessors, (1011), 231 states have call successors, (231), 68 states have call predecessors, (231), 66 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 03:55:41,242 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 03:55:45,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:55:45,785 INFO L93 Difference]: Finished difference Result 3527 states and 5164 transitions. [2021-12-16 03:55:45,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:55:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2021-12-16 03:55:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:55:45,852 INFO L225 Difference]: With dead ends: 3527 [2021-12-16 03:55:45,852 INFO L226 Difference]: Without dead ends: 2445 [2021-12-16 03:55:45,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:55:45,868 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 2973 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 1428 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:55:45,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3137 Valid, 4037 Invalid, 3182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1428 Valid, 1753 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-12-16 03:55:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-12-16 03:55:46,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2014. [2021-12-16 03:55:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1460 states have (on average 1.3171232876712329) internal successors, (1923), 1494 states have internal predecessors, (1923), 424 states have call successors, (424), 130 states have call predecessors, (424), 129 states have return successors, (419), 403 states have call predecessors, (419), 419 states have call successors, (419) [2021-12-16 03:55:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2766 transitions. [2021-12-16 03:55:46,092 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2766 transitions. Word has length 52 [2021-12-16 03:55:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:55:46,092 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 2766 transitions. [2021-12-16 03:55:46,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 03:55:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2766 transitions. [2021-12-16 03:55:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-16 03:55:46,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:55:46,096 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:46,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:55:46,097 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:55:46,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:55:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2069612780, now seen corresponding path program 1 times [2021-12-16 03:55:46,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:55:46,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949620443] [2021-12-16 03:55:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:55:46,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:55:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:55:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:55:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:55:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:55:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:55:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:55:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:55:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 03:55:46,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:55:46,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949620443] [2021-12-16 03:55:46,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949620443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:55:46,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:55:46,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:55:46,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331049037] [2021-12-16 03:55:46,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:55:46,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:55:46,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:55:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:55:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:55:46,385 INFO L87 Difference]: Start difference. First operand 2014 states and 2766 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:55:49,099 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 03:55:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:55:54,511 INFO L93 Difference]: Finished difference Result 6819 states and 9996 transitions. [2021-12-16 03:55:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:55:54,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-12-16 03:55:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:55:54,553 INFO L225 Difference]: With dead ends: 6819 [2021-12-16 03:55:54,553 INFO L226 Difference]: Without dead ends: 4827 [2021-12-16 03:55:54,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:55:54,569 INFO L933 BasicCegarLoop]: 1634 mSDtfsCounter, 3000 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 1389 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1389 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:55:54,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3140 Valid, 4183 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1389 Valid, 1778 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-12-16 03:55:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4827 states. [2021-12-16 03:55:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4827 to 4244. [2021-12-16 03:55:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3066 states have (on average 1.3065883887801697) internal successors, (4006), 3148 states have internal predecessors, (4006), 856 states have call successors, (856), 257 states have call predecessors, (856), 321 states have return successors, (1129), 862 states have call predecessors, (1129), 851 states have call successors, (1129) [2021-12-16 03:55:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 5991 transitions. [2021-12-16 03:55:54,822 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 5991 transitions. Word has length 62 [2021-12-16 03:55:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:55:54,823 INFO L470 AbstractCegarLoop]: Abstraction has 4244 states and 5991 transitions. [2021-12-16 03:55:54,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:55:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 5991 transitions. [2021-12-16 03:55:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-16 03:55:54,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:55:54,831 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:55:54,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:55:54,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:55:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:55:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash -266995818, now seen corresponding path program 1 times [2021-12-16 03:55:54,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:55:54,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931240198] [2021-12-16 03:55:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:55:54,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:55:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:55:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:55:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:55:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:55:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:55:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:55:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:55:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:55:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 03:55:55,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:55:55,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931240198] [2021-12-16 03:55:55,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931240198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:55:55,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:55:55,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:55:55,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101898482] [2021-12-16 03:55:55,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:55:55,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:55:55,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:55:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:55:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:55:55,184 INFO L87 Difference]: Start difference. First operand 4244 states and 5991 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:55:57,864 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 03:56:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:56:02,775 INFO L93 Difference]: Finished difference Result 7096 states and 10382 transitions. [2021-12-16 03:56:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:56:02,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-12-16 03:56:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:56:02,823 INFO L225 Difference]: With dead ends: 7096 [2021-12-16 03:56:02,823 INFO L226 Difference]: Without dead ends: 7093 [2021-12-16 03:56:02,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:56:02,830 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 2946 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 1388 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1388 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-12-16 03:56:02,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3107 Valid, 3764 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1388 Valid, 1698 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-12-16 03:56:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2021-12-16 03:56:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6240. [2021-12-16 03:56:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 4498 states have (on average 1.3041351711871942) internal successors, (5866), 4618 states have internal predecessors, (5866), 1262 states have call successors, (1262), 383 states have call predecessors, (1262), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-16 03:56:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 8794 transitions. [2021-12-16 03:56:03,145 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 8794 transitions. Word has length 63 [2021-12-16 03:56:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:56:03,145 INFO L470 AbstractCegarLoop]: Abstraction has 6240 states and 8794 transitions. [2021-12-16 03:56:03,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:03,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 8794 transitions. [2021-12-16 03:56:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-16 03:56:03,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:56:03,147 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:03,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:56:03,148 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:56:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:56:03,149 INFO L85 PathProgramCache]: Analyzing trace with hash 312586543, now seen corresponding path program 1 times [2021-12-16 03:56:03,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:56:03,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984125499] [2021-12-16 03:56:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:56:03,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:56:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:56:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:56:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:56:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:56:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:56:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:56:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:56:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 03:56:03,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:56:03,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984125499] [2021-12-16 03:56:03,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984125499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:56:03,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:56:03,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:56:03,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619548786] [2021-12-16 03:56:03,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:56:03,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:56:03,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:56:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:56:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:56:03,434 INFO L87 Difference]: Start difference. First operand 6240 states and 8794 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:05,992 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 03:56:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:56:10,496 INFO L93 Difference]: Finished difference Result 7095 states and 10380 transitions. [2021-12-16 03:56:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:56:10,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2021-12-16 03:56:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:56:10,534 INFO L225 Difference]: With dead ends: 7095 [2021-12-16 03:56:10,534 INFO L226 Difference]: Without dead ends: 7092 [2021-12-16 03:56:10,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:56:10,540 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 2954 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 1396 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3118 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:56:10,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3118 Valid, 3764 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 1683 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-16 03:56:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2021-12-16 03:56:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 6239. [2021-12-16 03:56:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 4498 states have (on average 1.3039128501556247) internal successors, (5865), 4617 states have internal predecessors, (5865), 1261 states have call successors, (1261), 383 states have call predecessors, (1261), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-16 03:56:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 8792 transitions. [2021-12-16 03:56:10,841 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 8792 transitions. Word has length 64 [2021-12-16 03:56:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:56:10,843 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 8792 transitions. [2021-12-16 03:56:10,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 8792 transitions. [2021-12-16 03:56:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 03:56:10,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:56:10,846 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:10,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:56:10,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:56:10,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:56:10,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1099775417, now seen corresponding path program 1 times [2021-12-16 03:56:10,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:56:10,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210609041] [2021-12-16 03:56:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:56:10,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:56:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:56:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:56:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:56:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:56:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:56:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:56:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:56:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 03:56:11,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:56:11,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210609041] [2021-12-16 03:56:11,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210609041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:56:11,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:56:11,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:56:11,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157574547] [2021-12-16 03:56:11,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:56:11,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:56:11,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:56:11,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:56:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:56:11,162 INFO L87 Difference]: Start difference. First operand 6239 states and 8792 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:13,834 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 03:56:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:56:18,013 INFO L93 Difference]: Finished difference Result 7094 states and 10378 transitions. [2021-12-16 03:56:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:56:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-12-16 03:56:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:56:18,057 INFO L225 Difference]: With dead ends: 7094 [2021-12-16 03:56:18,057 INFO L226 Difference]: Without dead ends: 7091 [2021-12-16 03:56:18,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:56:18,065 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 2940 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 1386 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1386 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:56:18,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 3751 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1386 Valid, 1684 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-12-16 03:56:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2021-12-16 03:56:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 6238. [2021-12-16 03:56:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 4498 states have (on average 1.303690529124055) internal successors, (5864), 4616 states have internal predecessors, (5864), 1260 states have call successors, (1260), 383 states have call predecessors, (1260), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-16 03:56:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 8790 transitions. [2021-12-16 03:56:18,343 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 8790 transitions. Word has length 65 [2021-12-16 03:56:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:56:18,343 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 8790 transitions. [2021-12-16 03:56:18,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 8790 transitions. [2021-12-16 03:56:18,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 03:56:18,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:56:18,345 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:18,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:56:18,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:56:18,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:56:18,346 INFO L85 PathProgramCache]: Analyzing trace with hash -267168398, now seen corresponding path program 1 times [2021-12-16 03:56:18,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:56:18,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65682488] [2021-12-16 03:56:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:56:18,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:56:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:56:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:56:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:56:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:56:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:56:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:56:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:56:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 03:56:18,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:56:18,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65682488] [2021-12-16 03:56:18,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65682488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:56:18,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:56:18,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:56:18,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543205402] [2021-12-16 03:56:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:56:18,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:56:18,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:56:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:56:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:56:18,570 INFO L87 Difference]: Start difference. First operand 6238 states and 8790 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:21,218 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 03:56:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:56:25,451 INFO L93 Difference]: Finished difference Result 7093 states and 10376 transitions. [2021-12-16 03:56:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:56:25,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-12-16 03:56:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:56:25,479 INFO L225 Difference]: With dead ends: 7093 [2021-12-16 03:56:25,479 INFO L226 Difference]: Without dead ends: 7081 [2021-12-16 03:56:25,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:56:25,482 INFO L933 BasicCegarLoop]: 1502 mSDtfsCounter, 2937 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 1382 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1382 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:56:25,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3100 Valid, 3743 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1382 Valid, 1690 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-12-16 03:56:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2021-12-16 03:56:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 6228. [2021-12-16 03:56:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6228 states, 4489 states have (on average 1.3034083314769436) internal successors, (5851), 4606 states have internal predecessors, (5851), 1259 states have call successors, (1259), 383 states have call predecessors, (1259), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-16 03:56:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8776 transitions. [2021-12-16 03:56:25,785 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8776 transitions. Word has length 66 [2021-12-16 03:56:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:56:25,785 INFO L470 AbstractCegarLoop]: Abstraction has 6228 states and 8776 transitions. [2021-12-16 03:56:25,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 03:56:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8776 transitions. [2021-12-16 03:56:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-16 03:56:25,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:56:25,798 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:56:25,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:56:25,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:56:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:56:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash -108410768, now seen corresponding path program 1 times [2021-12-16 03:56:25,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:56:25,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273991978] [2021-12-16 03:56:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:56:25,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:56:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:56:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:25,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:56:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:25,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:56:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:25,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:56:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:56:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:56:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:56:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:56:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 03:56:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:56:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:56:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-16 03:56:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 03:56:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:56:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-16 03:56:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:56:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:56:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:56:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:56:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:56:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:56:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:56:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-16 03:56:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-16 03:56:26,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:56:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273991978] [2021-12-16 03:56:26,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273991978] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:56:26,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:56:26,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 03:56:26,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804680322] [2021-12-16 03:56:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:56:26,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:56:26,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:56:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:56:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:56:26,252 INFO L87 Difference]: Start difference. First operand 6228 states and 8776 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23)