./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.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 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:39:12,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:39:12,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:39:12,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:39:12,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:39:12,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:39:12,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:39:12,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:39:12,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:39:12,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:39:12,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:39:12,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:39:12,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:39:12,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:39:12,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:39:12,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:39:12,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:39:12,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:39:12,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:39:12,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:39:12,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:39:12,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:39:12,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:39:12,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:39:12,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:39:12,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:39:12,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:39:12,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:39:12,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:39:12,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:39:12,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:39:12,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:39:12,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:39:12,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:39:12,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:39:12,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:39:12,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:39:12,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:39:12,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:39:12,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:39:12,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:39:12,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:39:12,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:39:12,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:39:12,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:39:12,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:39:12,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:39:12,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:39:12,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:39:12,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:39:12,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:39:12,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:39:12,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:39:12,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:39:12,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:39:12,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:39:12,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c19133f8e1eb8e04c1430c89bd3923e29e833639b74dc68815899bbf3f9fa [2021-12-14 17:39:12,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:39:12,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:39:12,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:39:12,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:39:12,483 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:39:12,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-12-14 17:39:12,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe6bbc0f3/85de4dae13ff41a489225568b27c537b/FLAG5cbe3fc19 [2021-12-14 17:39:13,345 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:39:13,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-12-14 17:39:13,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe6bbc0f3/85de4dae13ff41a489225568b27c537b/FLAG5cbe3fc19 [2021-12-14 17:39:13,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe6bbc0f3/85de4dae13ff41a489225568b27c537b [2021-12-14 17:39:13,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:39:13,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:39:13,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:39:13,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:39:13,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:39:13,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:39:13" (1/1) ... [2021-12-14 17:39:13,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279d3a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:13, skipping insertion in model container [2021-12-14 17:39:13,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:39:13" (1/1) ... [2021-12-14 17:39:13,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:39:14,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:39:16,706 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-12-14 17:39:16,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:39:17,001 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:39:17,908 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-consumption/linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i[553894,553907] [2021-12-14 17:39:17,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:39:18,087 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:39:18,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18 WrapperNode [2021-12-14 17:39:18,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:39:18,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:39:18,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:39:18,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:39:18,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,761 INFO L137 Inliner]: procedures = 457, calls = 15318, calls flagged for inlining = 154, calls inlined = 76, statements flattened = 12878 [2021-12-14 17:39:18,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:39:18,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:39:18,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:39:18,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:39:18,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:18,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:19,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:19,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:39:19,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:39:19,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:39:19,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:39:19,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (1/1) ... [2021-12-14 17:39:19,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:39:19,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:39:19,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:39:19,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:39:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:39:19,237 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:39:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs [2021-12-14 17:39:19,237 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs [2021-12-14 17:39:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_area_set [2021-12-14 17:39:19,237 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_area_set [2021-12-14 17:39:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2021-12-14 17:39:19,238 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2021-12-14 17:39:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-12-14 17:39:19,238 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-12-14 17:39:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_mmap [2021-12-14 17:39:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:39:19,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:39:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_stop_streaming [2021-12-14 17:39:19,238 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_stop_streaming [2021-12-14 17:39:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_device_unregister [2021-12-14 17:39:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_device_unregister [2021-12-14 17:39:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-14 17:39:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-14 17:39:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:39:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:39:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-12-14 17:39:19,239 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-12-14 17:39:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:39:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:39:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_ac97 [2021-12-14 17:39:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_ac97 [2021-12-14 17:39:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_em28xx [2021-12-14 17:39:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_em28xx [2021-12-14 17:39:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-12-14 17:39:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-12-14 17:39:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-14 17:39:19,240 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-14 17:39:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-12-14 17:39:19,241 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-12-14 17:39:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-12-14 17:39:19,241 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-12-14 17:39:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:39:19,241 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:39:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-12-14 17:39:19,241 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-12-14 17:39:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-12-14 17:39:19,242 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-12-14 17:39:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:39:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_vbi_supported [2021-12-14 17:39:19,242 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_vbi_supported [2021-12-14 17:39:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:39:19,242 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:39:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:39:19,242 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:39:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_copy_video [2021-12-14 17:39:19,243 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_copy_video [2021-12-14 17:39:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2021-12-14 17:39:19,243 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2021-12-14 17:39:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_ident [2021-12-14 17:39:19,243 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_ident [2021-12-14 17:39:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2021-12-14 17:39:19,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~v4l2_std_id~0~TO~int [2021-12-14 17:39:19,243 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-12-14 17:39:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-12-14 17:39:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req [2021-12-14 17:39:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req [2021-12-14 17:39:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:39:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2021-12-14 17:39:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ctrl_urb_lock_of_em28xx [2021-12-14 17:39:19,244 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 17:39:19,244 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 17:39:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_buffer_done [2021-12-14 17:39:19,245 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_buffer_done [2021-12-14 17:39:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:39:19,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-14 17:39:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2021-12-14 17:39:19,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ctrl_urb_lock_of_em28xx [2021-12-14 17:39:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:39:19,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-12-14 17:39:19,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-12-14 17:39:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-12-14 17:39:19,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-12-14 17:39:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:39:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_i2c_unregister [2021-12-14 17:39:19,246 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_i2c_unregister [2021-12-14 17:39:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:39:19,246 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:39:19,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:39:19,246 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:39:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2021-12-14 17:39:19,247 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2021-12-14 17:39:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:39:19,247 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:39:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-12-14 17:39:19,247 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-12-14 17:39:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-12-14 17:39:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-12-14 17:39:19,247 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure video_mux [2021-12-14 17:39:19,248 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mux [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_audio_analog_set [2021-12-14 17:39:19,248 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_audio_analog_set [2021-12-14 17:39:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:39:19,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:39:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-14 17:39:19,249 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-14 17:39:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_prepare [2021-12-14 17:39:19,249 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_prepare [2021-12-14 17:39:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_start_analog_streaming [2021-12-14 17:39:19,249 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_start_analog_streaming [2021-12-14 17:39:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-12-14 17:39:19,249 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-12-14 17:39:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg [2021-12-14 17:39:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg [2021-12-14 17:39:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_reg_len [2021-12-14 17:39:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_reg_len [2021-12-14 17:39:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-14 17:39:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-14 17:39:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-12-14 17:39:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure get_ressource [2021-12-14 17:39:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ressource [2021-12-14 17:39:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-12-14 17:39:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-12-14 17:39:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_outfmt [2021-12-14 17:39:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_outfmt [2021-12-14 17:39:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:39:19,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:39:19,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-14 17:39:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-14 17:39:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 17:39:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 17:39:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_set_plane_payload [2021-12-14 17:39:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_set_plane_payload [2021-12-14 17:39:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_fop_poll [2021-12-14 17:39:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2021-12-14 17:39:19,252 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2021-12-14 17:39:19,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:39:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:39:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-14 17:39:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-14 17:39:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_close [2021-12-14 17:39:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_close [2021-12-14 17:39:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_reg_req_len [2021-12-14 17:39:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_reg_req_len [2021-12-14 17:39:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-12-14 17:39:19,253 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-12-14 17:39:19,253 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg_bits [2021-12-14 17:39:19,254 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg_bits [2021-12-14 17:39:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:39:19,254 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:39:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:39:19,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:39:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-14 17:39:19,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2021-12-14 17:39:19,254 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_s_ctrl [2021-12-14 17:39:19,254 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_s_ctrl [2021-12-14 17:39:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:39:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:39:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-12-14 17:39:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-12-14 17:39:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_buffer_prepare [2021-12-14 17:39:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_buffer_prepare [2021-12-14 17:39:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_release_resources [2021-12-14 17:39:19,255 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_release_resources [2021-12-14 17:39:19,255 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 17:39:19,256 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 17:39:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-12-14 17:39:19,256 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-12-14 17:39:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_em28xx [2021-12-14 17:39:19,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_em28xx [2021-12-14 17:39:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_regs_req [2021-12-14 17:39:19,256 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_regs_req [2021-12-14 17:39:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:39:19,256 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-14 17:39:19,256 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-14 17:39:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:39:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_chip_info [2021-12-14 17:39:19,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_chip_info [2021-12-14 17:39:19,257 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_video_format [2021-12-14 17:39:19,257 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_video_format [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_resolution_set [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_resolution_set [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_is_ac97_ready [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_is_ac97_ready [2021-12-14 17:39:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-14 17:39:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_v4l2_open [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_v4l2_open [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_size [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_size [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u16~0~X~$Pointer$~X~int~TO~int [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_uninit_usb_xfer [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_uninit_usb_xfer [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure finish_field_prepare_next [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_field_prepare_next [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_read_ac97 [2021-12-14 17:39:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_read_ac97 [2021-12-14 17:39:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_wake_i2c [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_wake_i2c [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure size_to_scale [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure size_to_scale [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_get_drv_priv [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_get_drv_priv [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure scale_to_size [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure scale_to_size [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure vb2_plane_vaddr [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure vb2_plane_vaddr [2021-12-14 17:39:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-12-14 17:39:19,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-12-14 17:39:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_capture_start [2021-12-14 17:39:19,366 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_capture_start [2021-12-14 17:39:20,111 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:39:20,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:39:41,844 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:39:41,863 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:39:41,863 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:39:41,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:39:41 BoogieIcfgContainer [2021-12-14 17:39:41,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:39:41,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:39:41,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:39:41,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:39:41,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:39:13" (1/3) ... [2021-12-14 17:39:41,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d771f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:39:41, skipping insertion in model container [2021-12-14 17:39:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:39:18" (2/3) ... [2021-12-14 17:39:41,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d771f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:39:41, skipping insertion in model container [2021-12-14 17:39:41,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:39:41" (3/3) ... [2021-12-14 17:39:41,871 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--usb--em28xx--em28xx.ko-ldv_main0.cil.out.i [2021-12-14 17:39:41,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:39:41,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:39:41,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:39:41,941 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:39:41,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:39:41,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 1900 states, 1392 states have (on average 1.3915229885057472) internal successors, (1937), 1417 states have internal predecessors, (1937), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) [2021-12-14 17:39:41,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 17:39:41,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:41,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:41,990 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 284761344, now seen corresponding path program 1 times [2021-12-14 17:39:41,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:41,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674277986] [2021-12-14 17:39:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:42,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:39:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:43,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:43,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674277986] [2021-12-14 17:39:43,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674277986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:43,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:43,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:43,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809996414] [2021-12-14 17:39:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:43,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:43,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:43,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:43,487 INFO L87 Difference]: Start difference. First operand has 1900 states, 1392 states have (on average 1.3915229885057472) internal successors, (1937), 1417 states have internal predecessors, (1937), 395 states have call successors, (395), 111 states have call predecessors, (395), 111 states have return successors, (395), 394 states have call predecessors, (395), 395 states have call successors, (395) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:39:44,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:39:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:47,828 INFO L93 Difference]: Finished difference Result 3838 states and 5681 transitions. [2021-12-14 17:39:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:39:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-14 17:39:47,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:47,858 INFO L225 Difference]: With dead ends: 3838 [2021-12-14 17:39:47,858 INFO L226 Difference]: Without dead ends: 1936 [2021-12-14 17:39:47,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:47,875 INFO L933 BasicCegarLoop]: 2339 mSDtfsCounter, 3569 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1146 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:47,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 2747 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1146 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-14 17:39:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2021-12-14 17:39:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1896. [2021-12-14 17:39:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1391 states have (on average 1.387491013659238) internal successors, (1930), 1412 states have internal predecessors, (1930), 393 states have call successors, (393), 113 states have call predecessors, (393), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-12-14 17:39:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2705 transitions. [2021-12-14 17:39:48,182 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2705 transitions. Word has length 12 [2021-12-14 17:39:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:48,182 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2705 transitions. [2021-12-14 17:39:48,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:39:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2705 transitions. [2021-12-14 17:39:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-14 17:39:48,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:48,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:48,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:39:48,184 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:48,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:48,185 INFO L85 PathProgramCache]: Analyzing trace with hash 236165592, now seen corresponding path program 1 times [2021-12-14 17:39:48,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:48,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571994630] [2021-12-14 17:39:48,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:48,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:39:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:49,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571994630] [2021-12-14 17:39:49,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571994630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:49,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:49,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:49,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223133283] [2021-12-14 17:39:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:49,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:49,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:49,144 INFO L87 Difference]: Start difference. First operand 1896 states and 2705 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:39:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:39:54,230 INFO L93 Difference]: Finished difference Result 2361 states and 3521 transitions. [2021-12-14 17:39:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:39:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-14 17:39:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:39:54,262 INFO L225 Difference]: With dead ends: 2361 [2021-12-14 17:39:54,262 INFO L226 Difference]: Without dead ends: 2358 [2021-12-14 17:39:54,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:39:54,265 INFO L933 BasicCegarLoop]: 2577 mSDtfsCounter, 4059 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 1087 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1087 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:39:54,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4249 Valid, 2956 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1087 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-14 17:39:54,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-12-14 17:39:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1895. [2021-12-14 17:39:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1391 states have (on average 1.3867721063982745) internal successors, (1929), 1411 states have internal predecessors, (1929), 392 states have call successors, (392), 113 states have call predecessors, (392), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-12-14 17:39:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2703 transitions. [2021-12-14 17:39:54,349 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2703 transitions. Word has length 13 [2021-12-14 17:39:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:39:54,350 INFO L470 AbstractCegarLoop]: Abstraction has 1895 states and 2703 transitions. [2021-12-14 17:39:54,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:39:54,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2703 transitions. [2021-12-14 17:39:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-14 17:39:54,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:39:54,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:39:54,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:39:54,352 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:39:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:39:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1270297853, now seen corresponding path program 1 times [2021-12-14 17:39:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:39:54,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035043844] [2021-12-14 17:39:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:39:54,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:39:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:39:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:39:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:39:55,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:39:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035043844] [2021-12-14 17:39:55,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035043844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:39:55,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:39:55,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:39:55,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753592289] [2021-12-14 17:39:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:39:55,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:39:55,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:39:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:39:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:39:55,237 INFO L87 Difference]: Start difference. First operand 1895 states and 2703 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:39:56,316 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 [] [2021-12-14 17:40:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:00,285 INFO L93 Difference]: Finished difference Result 2360 states and 3519 transitions. [2021-12-14 17:40:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:40:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-14 17:40:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:00,295 INFO L225 Difference]: With dead ends: 2360 [2021-12-14 17:40:00,295 INFO L226 Difference]: Without dead ends: 2357 [2021-12-14 17:40:00,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:00,299 INFO L933 BasicCegarLoop]: 2585 mSDtfsCounter, 4051 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4240 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:00,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4240 Valid, 2964 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1083 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-14 17:40:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-12-14 17:40:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1894. [2021-12-14 17:40:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1391 states have (on average 1.3860531991373113) internal successors, (1928), 1410 states have internal predecessors, (1928), 391 states have call successors, (391), 113 states have call predecessors, (391), 111 states have return successors, (382), 381 states have call predecessors, (382), 382 states have call successors, (382) [2021-12-14 17:40:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2701 transitions. [2021-12-14 17:40:00,358 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2701 transitions. Word has length 14 [2021-12-14 17:40:00,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:00,359 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 2701 transitions. [2021-12-14 17:40:00,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:40:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2701 transitions. [2021-12-14 17:40:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 17:40:00,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:00,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:00,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:40:00,360 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash -726019525, now seen corresponding path program 1 times [2021-12-14 17:40:00,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:00,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634133896] [2021-12-14 17:40:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:00,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:01,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:01,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634133896] [2021-12-14 17:40:01,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634133896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:01,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:01,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:40:01,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651973099] [2021-12-14 17:40:01,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:01,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:40:01,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:40:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:40:01,422 INFO L87 Difference]: Start difference. First operand 1894 states and 2701 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:40:02,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:40:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:40:11,484 INFO L93 Difference]: Finished difference Result 6416 states and 9496 transitions. [2021-12-14 17:40:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:40:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-14 17:40:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:40:11,511 INFO L225 Difference]: With dead ends: 6416 [2021-12-14 17:40:11,512 INFO L226 Difference]: Without dead ends: 4528 [2021-12-14 17:40:11,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:40:11,521 INFO L933 BasicCegarLoop]: 3177 mSDtfsCounter, 5084 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 4185 mSolverCounterSat, 1485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5411 SdHoareTripleChecker+Valid, 4456 SdHoareTripleChecker+Invalid, 5670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1485 IncrementalHoareTripleChecker+Valid, 4185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:40:11,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5411 Valid, 4456 Invalid, 5670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1485 Valid, 4185 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-12-14 17:40:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4528 states. [2021-12-14 17:40:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4528 to 3850. [2021-12-14 17:40:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 2839 states have (on average 1.3874603733709052) internal successors, (3939), 2868 states have internal predecessors, (3939), 786 states have call successors, (786), 214 states have call predecessors, (786), 224 states have return successors, (898), 791 states have call predecessors, (898), 774 states have call successors, (898) [2021-12-14 17:40:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 5623 transitions. [2021-12-14 17:40:11,941 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 5623 transitions. Word has length 15 [2021-12-14 17:40:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:40:11,941 INFO L470 AbstractCegarLoop]: Abstraction has 3850 states and 5623 transitions. [2021-12-14 17:40:11,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:40:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 5623 transitions. [2021-12-14 17:40:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 17:40:11,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:11,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:11,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:40:11,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1033255674, now seen corresponding path program 1 times [2021-12-14 17:40:11,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:11,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852080270] [2021-12-14 17:40:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:11,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:12,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:40:12,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:12,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852080270] [2021-12-14 17:40:12,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852080270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:12,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:12,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:40:12,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3601899] [2021-12-14 17:40:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:12,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:40:12,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:40:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:40:12,776 INFO L87 Difference]: Start difference. First operand 3850 states and 5623 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:40:13,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []