./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.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 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:57:51,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:57:51,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:57:51,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:57:51,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:57:51,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:57:51,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:57:51,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:57:51,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:57:51,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:57:51,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:57:51,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:57:51,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:57:51,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:57:51,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:57:51,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:57:51,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:57:51,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:57:51,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:57:51,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:57:51,617 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:57:51,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:57:51,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:57:51,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:57:51,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:57:51,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:57:51,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:57:51,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:57:51,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:57:51,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:57:51,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:57:51,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:57:51,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:57:51,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:57:51,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:57:51,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:57:51,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:57:51,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:57:51,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:57:51,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:57:51,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:57:51,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:57:51,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:57:51,658 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:57:51,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:57:51,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:57:51,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:57:51,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:57:51,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:57:51,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:57:51,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:57:51,660 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:57:51,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:57:51,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:57:51,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:57:51,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:57:51,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:57:51,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:57:51,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:57:51,662 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:57:51,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:57:51,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:57:51,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:57:51,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:57:51,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:57:51,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:57:51,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:57:51,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:57:51,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:57:51,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:57:51,664 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:57:51,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:57:51,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:57:51,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2022-07-14 00:57:51,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:57:51,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:57:51,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:57:51,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:57:51,874 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:57:51,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-14 00:57:51,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4618b2487/a3a371921bcf49419404fdef80e0b584/FLAGe6e386795 [2022-07-14 00:57:52,839 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:57:52,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-14 00:57:52,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4618b2487/a3a371921bcf49419404fdef80e0b584/FLAGe6e386795 [2022-07-14 00:57:52,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4618b2487/a3a371921bcf49419404fdef80e0b584 [2022-07-14 00:57:52,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:57:52,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:57:52,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:57:52,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:57:52,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:57:52,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:57:52" (1/1) ... [2022-07-14 00:57:52,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28ee4355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:52, skipping insertion in model container [2022-07-14 00:57:52,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:57:52" (1/1) ... [2022-07-14 00:57:52,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:57:53,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:57:53,638 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-07-14 00:57:54,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-07-14 00:57:54,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:57:54,785 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:57:54,850 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-07-14 00:57:55,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-07-14 00:57:55,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:57:55,236 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:57:55,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55 WrapperNode [2022-07-14 00:57:55,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:57:55,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:57:55,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:57:55,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:57:55,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,490 INFO L137 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2022-07-14 00:57:55,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:57:55,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:57:55,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:57:55,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:57:55,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:57:55,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:57:55,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:57:55,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:57:55,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (1/1) ... [2022-07-14 00:57:55,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:57:55,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:57:55,789 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) [2022-07-14 00:57:55,806 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 [2022-07-14 00:57:55,819 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-14 00:57:55,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-14 00:57:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2022-07-14 00:57:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-07-14 00:57:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-07-14 00:57:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2022-07-14 00:57:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2022-07-14 00:57:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-14 00:57:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-14 00:57:55,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:57:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:57:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:57:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-14 00:57:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-14 00:57:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2022-07-14 00:57:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2022-07-14 00:57:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-14 00:57:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-14 00:57:55,821 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-14 00:57:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-14 00:57:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2022-07-14 00:57:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2022-07-14 00:57:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2022-07-14 00:57:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2022-07-14 00:57:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2022-07-14 00:57:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2022-07-14 00:57:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:57:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:57:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2022-07-14 00:57:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2022-07-14 00:57:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-07-14 00:57:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-07-14 00:57:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-07-14 00:57:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-07-14 00:57:55,823 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2022-07-14 00:57:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2022-07-14 00:57:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2022-07-14 00:57:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2022-07-14 00:57:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:57:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:57:55,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2022-07-14 00:57:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2022-07-14 00:57:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:57:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-14 00:57:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-14 00:57:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:57:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:57:55,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:57:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:57:55,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2022-07-14 00:57:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2022-07-14 00:57:55,827 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-14 00:57:55,827 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-14 00:57:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 00:57:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 00:57:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-14 00:57:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-14 00:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:57:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-14 00:57:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-14 00:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:57:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2022-07-14 00:57:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2022-07-14 00:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2022-07-14 00:57:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2022-07-14 00:57:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2022-07-14 00:57:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2022-07-14 00:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2022-07-14 00:57:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2022-07-14 00:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2022-07-14 00:57:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2022-07-14 00:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2022-07-14 00:57:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2022-07-14 00:57:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-07-14 00:57:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-07-14 00:57:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:57:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-07-14 00:57:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-07-14 00:57:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-14 00:57:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-14 00:57:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2022-07-14 00:57:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2022-07-14 00:57:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-14 00:57:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2022-07-14 00:57:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2022-07-14 00:57:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2022-07-14 00:57:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2022-07-14 00:57:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2022-07-14 00:57:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2022-07-14 00:57:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:57:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2022-07-14 00:57:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2022-07-14 00:57:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:57:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2022-07-14 00:57:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2022-07-14 00:57:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-07-14 00:57:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-07-14 00:57:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-07-14 00:57:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-07-14 00:57:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-14 00:57:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-14 00:57:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-14 00:57:55,837 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-14 00:57:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-14 00:57:55,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-14 00:57:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-14 00:57:55,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-14 00:57:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-14 00:57:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-14 00:57:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2022-07-14 00:57:55,840 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2022-07-14 00:57:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:57:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:57:55,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:57:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:55,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-14 00:57:56,586 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:57:56,588 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:57:56,868 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:58:17,379 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:58:17,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:58:17,395 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-07-14 00:58:17,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:58:17 BoogieIcfgContainer [2022-07-14 00:58:17,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:58:17,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:58:17,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:58:17,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:58:17,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:57:52" (1/3) ... [2022-07-14 00:58:17,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dbef25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:58:17, skipping insertion in model container [2022-07-14 00:58:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:57:55" (2/3) ... [2022-07-14 00:58:17,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dbef25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:58:17, skipping insertion in model container [2022-07-14 00:58:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:58:17" (3/3) ... [2022-07-14 00:58:17,404 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-07-14 00:58:17,414 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:58:17,414 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:58:17,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:58:17,489 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@745465e0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4628a735 [2022-07-14 00:58:17,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:58:17,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) [2022-07-14 00:58:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-14 00:58:17,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:58:17,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:58:17,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:58:17,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:58:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2022-07-14 00:58:17,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:58:17,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323559898] [2022-07-14 00:58:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:58:17,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:58:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:58:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:58:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:58:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:58:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:58:18,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323559898] [2022-07-14 00:58:18,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323559898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:58:18,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:58:18,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:58:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949029735] [2022-07-14 00:58:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:58:18,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:58:18,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:58:18,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:58:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:58:18,227 INFO L87 Difference]: Start difference. First operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:58:19,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:21,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:24,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:27,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:29,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:31,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:37,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:58:37,639 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2022-07-14 00:58:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:58:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-07-14 00:58:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:58:37,689 INFO L225 Difference]: With dead ends: 3120 [2022-07-14 00:58:37,689 INFO L226 Difference]: Without dead ends: 1581 [2022-07-14 00:58:37,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:58:37,743 INFO L413 NwaCegarLoop]: 2267 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:58:37,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 3339 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 673 Invalid, 6 Unknown, 0 Unchecked, 19.2s Time] [2022-07-14 00:58:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-07-14 00:58:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2022-07-14 00:58:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1078 states have (on average 1.3710575139146568) internal successors, (1478), 1124 states have internal predecessors, (1478), 389 states have call successors, (389), 55 states have call predecessors, (389), 54 states have return successors, (387), 386 states have call predecessors, (387), 387 states have call successors, (387) [2022-07-14 00:58:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2022-07-14 00:58:38,171 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2022-07-14 00:58:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:58:38,172 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2022-07-14 00:58:38,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:58:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2022-07-14 00:58:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-14 00:58:38,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:58:38,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:58:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:58:38,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:58:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:58:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2022-07-14 00:58:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:58:38,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455524228] [2022-07-14 00:58:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:58:38,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:58:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:58:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:58:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:58:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:58:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:58:38,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:58:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455524228] [2022-07-14 00:58:38,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455524228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:58:38,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:58:38,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:58:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553758664] [2022-07-14 00:58:38,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:58:38,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:58:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:58:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:58:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:58:38,501 INFO L87 Difference]: Start difference. First operand 1522 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:58:39,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:43,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:45,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:49,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:51,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:58:54,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:04,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:07,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:59:07,748 INFO L93 Difference]: Finished difference Result 4649 states and 7103 transitions. [2022-07-14 00:59:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:59:07,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-07-14 00:59:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:59:07,767 INFO L225 Difference]: With dead ends: 4649 [2022-07-14 00:59:07,771 INFO L226 Difference]: Without dead ends: 3132 [2022-07-14 00:59:07,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:59:07,798 INFO L413 NwaCegarLoop]: 2654 mSDtfsCounter, 2422 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 6281 SdHoareTripleChecker+Invalid, 3863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:59:07,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 6281 Invalid, 3863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 2919 Invalid, 6 Unknown, 0 Unchecked, 28.9s Time] [2022-07-14 00:59:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-07-14 00:59:07,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3010. [2022-07-14 00:59:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2132 states have (on average 1.372889305816135) internal successors, (2927), 2223 states have internal predecessors, (2927), 772 states have call successors, (772), 106 states have call predecessors, (772), 105 states have return successors, (770), 768 states have call predecessors, (770), 770 states have call successors, (770) [2022-07-14 00:59:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4469 transitions. [2022-07-14 00:59:08,013 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4469 transitions. Word has length 31 [2022-07-14 00:59:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:59:08,014 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4469 transitions. [2022-07-14 00:59:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:59:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4469 transitions. [2022-07-14 00:59:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-14 00:59:08,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:59:08,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:59:08,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:59:08,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:59:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:59:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1994554423, now seen corresponding path program 1 times [2022-07-14 00:59:08,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:59:08,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405027863] [2022-07-14 00:59:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:59:08,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:59:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:59:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:59:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:59:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:59:08,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:59:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405027863] [2022-07-14 00:59:08,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405027863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:59:08,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:59:08,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:59:08,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298796610] [2022-07-14 00:59:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:59:08,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:59:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:59:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:59:08,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:59:08,516 INFO L87 Difference]: Start difference. First operand 3010 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 00:59:11,812 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 [] [2022-07-14 00:59:13,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:17,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:19,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:22,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:26,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:28,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:30,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:32,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:34,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:39,514 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:59:40,897 INFO L93 Difference]: Finished difference Result 9250 states and 14218 transitions. [2022-07-14 00:59:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:59:40,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-07-14 00:59:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:59:40,925 INFO L225 Difference]: With dead ends: 9250 [2022-07-14 00:59:40,926 INFO L226 Difference]: Without dead ends: 6241 [2022-07-14 00:59:40,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:59:40,937 INFO L413 NwaCegarLoop]: 2688 mSDtfsCounter, 2952 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 1823 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 5349 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:59:40,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 5349 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 1861 Invalid, 11 Unknown, 0 Unchecked, 32.0s Time] [2022-07-14 00:59:40,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-07-14 00:59:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6000. [2022-07-14 00:59:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4249 states have (on average 1.3732642974817604) internal successors, (5835), 4430 states have internal predecessors, (5835), 1541 states have call successors, (1541), 210 states have call predecessors, (1541), 209 states have return successors, (1559), 1535 states have call predecessors, (1559), 1539 states have call successors, (1559) [2022-07-14 00:59:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8935 transitions. [2022-07-14 00:59:41,221 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8935 transitions. Word has length 33 [2022-07-14 00:59:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:59:41,221 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 8935 transitions. [2022-07-14 00:59:41,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 00:59:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8935 transitions. [2022-07-14 00:59:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-14 00:59:41,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:59:41,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:59:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:59:41,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:59:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:59:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1941480318, now seen corresponding path program 1 times [2022-07-14 00:59:41,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:59:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929920625] [2022-07-14 00:59:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:59:41,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:59:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:59:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:59:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 00:59:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:59:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:59:41,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:59:41,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929920625] [2022-07-14 00:59:41,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929920625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:59:41,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:59:41,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:59:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739246756] [2022-07-14 00:59:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:59:41,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:59:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:59:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:59:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:59:41,442 INFO L87 Difference]: Start difference. First operand 6000 states and 8935 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:59:46,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:48,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:53,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:55,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:59:59,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:06,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:00:08,204 INFO L93 Difference]: Finished difference Result 12448 states and 18923 transitions. [2022-07-14 01:00:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:00:08,205 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-14 01:00:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:00:08,271 INFO L225 Difference]: With dead ends: 12448 [2022-07-14 01:00:08,271 INFO L226 Difference]: Without dead ends: 6453 [2022-07-14 01:00:08,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:00:08,291 INFO L413 NwaCegarLoop]: 2289 mSDtfsCounter, 361 mSDsluCounter, 3571 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 434 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 5860 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2022-07-14 01:00:08,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 5860 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2224 Invalid, 6 Unknown, 0 Unchecked, 26.4s Time] [2022-07-14 01:00:08,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-07-14 01:00:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6210. [2022-07-14 01:00:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4410 states have (on average 1.3696145124716552) internal successors, (6040), 4591 states have internal predecessors, (6040), 1583 states have call successors, (1583), 217 states have call predecessors, (1583), 216 states have return successors, (1601), 1577 states have call predecessors, (1601), 1581 states have call successors, (1601) [2022-07-14 01:00:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9224 transitions. [2022-07-14 01:00:08,499 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9224 transitions. Word has length 41 [2022-07-14 01:00:08,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:00:08,500 INFO L495 AbstractCegarLoop]: Abstraction has 6210 states and 9224 transitions. [2022-07-14 01:00:08,501 INFO L496 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 01:00:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9224 transitions. [2022-07-14 01:00:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-14 01:00:08,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:00:08,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-14 01:00:08,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 01:00:08,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:00:08,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:00:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash -981262072, now seen corresponding path program 1 times [2022-07-14 01:00:08,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:00:08,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996313738] [2022-07-14 01:00:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:00:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:00:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:00:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:00:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:00:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 01:00:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:00:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:00:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 01:00:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:00:08,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996313738] [2022-07-14 01:00:08,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996313738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:00:08,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:00:08,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:00:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905608590] [2022-07-14 01:00:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:00:08,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:00:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:00:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:00:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:00:08,833 INFO L87 Difference]: Start difference. First operand 6210 states and 9224 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 01:00:13,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:16,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:19,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:21,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:23,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:29,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:00:30,455 INFO L93 Difference]: Finished difference Result 13774 states and 20817 transitions. [2022-07-14 01:00:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:00:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2022-07-14 01:00:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:00:30,502 INFO L225 Difference]: With dead ends: 13774 [2022-07-14 01:00:30,503 INFO L226 Difference]: Without dead ends: 7583 [2022-07-14 01:00:30,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:00:30,521 INFO L413 NwaCegarLoop]: 2356 mSDtfsCounter, 1101 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 1050 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 4946 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:00:30,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 4946 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 1605 Invalid, 6 Unknown, 0 Unchecked, 21.3s Time] [2022-07-14 01:00:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-07-14 01:00:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7150. [2022-07-14 01:00:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 5140 states have (on average 1.3626459143968872) internal successors, (7004), 5337 states have internal predecessors, (7004), 1727 states have call successors, (1727), 283 states have call predecessors, (1727), 282 states have return successors, (1745), 1721 states have call predecessors, (1745), 1725 states have call successors, (1745) [2022-07-14 01:00:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 10476 transitions. [2022-07-14 01:00:30,741 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 10476 transitions. Word has length 69 [2022-07-14 01:00:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:00:30,742 INFO L495 AbstractCegarLoop]: Abstraction has 7150 states and 10476 transitions. [2022-07-14 01:00:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 01:00:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 10476 transitions. [2022-07-14 01:00:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-14 01:00:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:00:30,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-14 01:00:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 01:00:30,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:00:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:00:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2030980828, now seen corresponding path program 1 times [2022-07-14 01:00:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 01:00:30,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762086442] [2022-07-14 01:00:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:00:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 01:00:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 01:00:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:00:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:00:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 01:00:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 01:00:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 01:00:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:00:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-14 01:00:31,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 01:00:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762086442] [2022-07-14 01:00:31,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762086442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:00:31,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:00:31,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-14 01:00:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514093418] [2022-07-14 01:00:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:00:31,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 01:00:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 01:00:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 01:00:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-14 01:00:31,702 INFO L87 Difference]: Start difference. First operand 7150 states and 10476 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 01:00:35,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:37,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:43,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:44,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:46,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:47,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:48,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:50,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:00:59,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:01,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:03,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:05,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:08,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:10,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:12,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:14,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:16,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:18,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:20,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:22,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:24,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:26,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:28,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:30,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:32,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:34,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:42,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:49,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:51,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:53,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:55,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:57,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:01:59,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:02,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:04,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:06,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:08,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:10,172 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:12,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:14,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:16,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:18,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:20,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:22,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:02:24,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []